| Table ID No. | MCAG | Legal Name | Entity Name | Government Description |
| 2288 | 0832 | Sacheen Lake Water and Sewer District | Sacheen Lake Water and Sewer District | Water/Sewer District |
| 2015 | 2102 | Saint John School District No. 322 | Saint John School District No 322 | School Districts |
| 85 | S099 | Washington Citizen's Commission on Salaries for Elected Officials | Salaries for Elected Officials, Citizen Commission on | Agency, Commission, or Board |
| 1259 | 1436 | Samish River Flood Control District | Samish River Flood Control District | Flood Control District |
| 2289 | 2246 | Sammamish Plateau Water and Sewer District | Sammamish Plateau Water and Sewer District | Water/Sewer District |
| 436 | 1293 | City of Sammamish | Sammamish, City of | City/Town |
| 643 | 0156 | San Juan County | San Juan County | County |
| 181 | 0058 | San Juan County Cemetery District No. 1 | San Juan County Cemetery District No 1 | Cemetery District |
| 182 | 0534 | San Juan County Cemetery District No. 2 | San Juan County Cemetery District No 2 | Cemetery District |
| 183 | 0542 | San Juan County Cemetery District No. 3 | San Juan County Cemetery District No 3 | Cemetery District |
| 593 | 2419 | San Juan County Conservation District | San Juan County Conservation District | Conservation District |
| 1107 | 1277 | San Juan County Fire Protection District No. 2 | San Juan County Fire Protection District No 2 | Fire Protection District |
| 1108 | 1278 | San Juan County Fire Protection District No. 3 | San Juan County Fire Protection District No 3 | Fire Protection District |
| 1109 | 1279 | San Juan County Fire Protection District No. 4 | San Juan County Fire Protection District No 4 | Fire Protection District |
| 1110 | 1280 | San Juan County Fire Protection District No. 5 | San Juan County Fire Protection District No 5 | Fire Protection District |
| 1111 | 0464 | San Juan County Fire Protection District No. 6 | San Juan County Fire Protection District No 6 | Fire Protection District |
| 1330 | 0723 | San Juan County Public Hospital District No. 1 | San Juan County Public Hospital District No 1 | Hospital District |
| 1600 | 1134 | San Juan Island Parks and Recreation District | San Juan Island Parks and Recreation District | Park and Recreation District |
| 2016 | 2013 | San Juan Island School District No. 149 | San Juan Island School District No 149 | School Districts |
| 1526 | 0485 | San Juan Library District | San Juan Library District | Library District |
| 1788 | 2480 | San Juan Regional Planning Council | San Juan Regional Planning Council | Regional Planning Council |
| 2290 | 0860 | Saratoga Water District | Saratoga Water District | Water/Sewer District |
| 2017 | 1891 | Satsop School District No. 104 | Satsop School District No 104 | School Districts |
| 2291 | 2216 | Scatchet Head Water District | Scatchet Head Water District | Water/Sewer District |
| 1388 | 1136 | School Insurance Association of Washington | School Insurance Association of Washington | Insurance Pool/Risk Management |
| 437 | 0713 | City of SeaTac | SeaTac, City of | City/Town |
| 1732 | 2734 | Seattle Chinatown International District Preservation/Development Authority | Seattle Chinatown International District Preservation/Development Authority | Public Development Authority |
| 551 | S670 | Seattle Community Colleges | Seattle Community Colleges | Community or Technical College |
| 1370 | 1511 | Housing Authority of the City of Seattle | Seattle Housing Authority | Housing Authority |
| 1733 | 2738 | Seattle Indian Services Commission | Seattle Indian Services Commission | Public Development Authority |
| 814 | 0546 | Port of Seattle Industrial Development Corporation | Seattle Industrial Development Corporation, Port of | Economic/Industrial Development |
| 2110 | 2784 | Seattle Monorail | Seattle Monorail | Transit/Transportation Authority |
| 2018 | 1903 | Seattle School District No. 1 | Seattle School District No 1 | School Districts |
| 438 | 0433 | City of Seattle | Seattle, City of | City/Town |
| 1683 | 1728 | Port of Seattle | Seattle, Port of | Port District (Includes Airports) |
| 2292 | 2164 | Seaview Sewer District | Seaview Sewer District | Water/Sewer District |
| 86 | S085 | Office of the Secretary of State | Secretary of State, Office of | Agency, Commission, or Board |
| 1371 | 1516 | Housing Authority of the City of Sedro-Woolley | Sedro Woolley Housing Authority | Housing Authority |
| 2019 | 2015 | Sedro-Woolley School District No. 101 | Sedro Woolley School District No 101 | School Districts |
| 439 | 0647 | City of Sedro Woolley | Sedro-Woolley, City of | City/Town |
| 523 | S530 | Washington State Seed Potato Commission | Seed Potato Commission, Washington State | Commodity Commissions |
| 1469 | 1624 | Selah Moxee Irrigation District | Selah Moxee Irrigation District | Irrigation and Reclamation District |
| 2020 | 2109 | Selah School District No. 119 | Selah School District No 119 | School Districts |
| 440 | 0844 | City of Selah | Selah, City of | City/Town |
| 2021 | 1992 | Selkirk School District No. 70 | Selkirk School District No 70 | School Districts |
| 87 | S012 | Senate | Senate | Agency, Commission, or Board |
| 88 | S325 | Sentencing Guidelines Commission | Sentencing Guidelines Commission | Agency, Commission, or Board |
| 2022 | 1833 | Sequim School District No. 323 | Sequim School District No 323 | School Districts |
| 441 | 0235 | City of Sequim | Sequim, City of | City/Town |
| 2023 | 2010 | Shaw Island School District No. 10 | Shaw Island School District No 10 | School Districts |
| 2024 | 1970 | Shelton School District No. 309 | Shelton School District No 309 | School Districts |
| 442 | 0520 | City of Shelton | Shelton, City of | City/Town |
| 1684 | 1746 | Port of Shelton | Shelton, Port of | Port District (Includes Airports) |
| 552 | S672 | Shoreline Community College | Shoreline Community College | Community or Technical College |
| 1112 | 1126 | Shoreline Fire Department | Shoreline Fire Department | Fire Protection District |
| 2025 | 1920 | Shoreline School District No. 412 | Shoreline School District No 412 | School Districts |
| 2293 | 2702 | Shoreline Water District | Shoreline Water District | Water/Sewer District |
| 443 | 1015 | City of Shoreline | Shoreline, City of | City/Town |
| 1601 | 2786 | Si View Metropolitan Park District | Si View Metropolitan Park District | Park and Recreation District |
| 2294 | 2308 | Silver Lake Water District | Silver Lake Water District | Water/Sewer District |
| 2295 | 2280 | Silverdale Water District No. 16 | Silverdale Water District No 16 | Water/Sewer District |
| 1685 | 1733 | Port of Silverdale | Silverdale, Port of | Port District (Includes Airports) |
| 594 | 2420 | Skagit Conservation District | Skagit Conservation District | Conservation District |
| 613 | 2481 | Skagit Council of Governments | Skagit Council of Governments | Council of Govt's/Conference of Govt's |
| 644 | 0158 | Skagit County | Skagit County | County |
| 184 | 0059 | Skagit County Cemetery District No. 1 | Skagit County Cemetery District No 1 | Cemetery District |
| 185 | 0060 | Skagit County Cemetery District No. 2 | Skagit County Cemetery District No 2 | Cemetery District |
| 186 | 0061 | Skagit County Cemetery District No. 3 | Skagit County Cemetery District No 3 | Cemetery District |
| 187 | 2470 | Skagit County Cemetery District No. 4 | Skagit County Cemetery District No 4 | Cemetery District |
| 188 | 0287 | Skagit County Cemetery District No. 5 | Skagit County Cemetery District No 5 | Cemetery District |
| 711 | 0950 | Skagit County Dike District No. 1 | Skagit County Dike District No 1 | Diking/Drainage District |
| 712 | 0957 | Skagit County Dike District No. 12 | Skagit County Dike District No 12 | Diking/Drainage District |
| 713 | 0961 | Skagit County Dike District No. 17 | Skagit County Dike District No 17 | Diking/Drainage District |
| 714 | 0963 | Skagit County Dike District No. 19 | Skagit County Dike District No 19 | Diking/Drainage District |
| 715 | 0368 | Skagit County Dike District No. 22 | Skagit County Dike District No 22 | Diking/Drainage District |
| 716 | 0952 | Skagit County Dike District No. 3 | Skagit County Dike District No 3 | Diking/Drainage District |
| 717 | 0953 | Skagit County Dike District No. 4 | Skagit County Dike District No 4 | Diking/Drainage District |
| 718 | 0954 | Skagit County Dike District No. 5 | Skagit County Dike District No 5 | Diking/Drainage District |
| 719 | 0955 | Skagit County Dike District No. 8 | Skagit County Dike District No 8 | Diking/Drainage District |
| 720 | 0956 | Skagit County Dike District No. 9 | Skagit County Dike District No 9 | Diking/Drainage District |
| 721 | 0566 | Skagit County Dike District No. 25 | Skagit County Dike District No. 25 | Diking/Drainage District |
| 722 | 0966 | Skagit County Drainage District No. 14 | Skagit County Drainage District No 14 | Diking/Drainage District |
| 723 | 0967 | Skagit County Drainage District No. 15 | Skagit County Drainage District No 15 | Diking/Drainage District |
| 724 | 0968 | Skagit County Drainage District No. 16 | Skagit County Drainage District No 16 | Diking/Drainage District |
| 725 | 0969 | Skagit County Drainage District No. 17 | Skagit County Drainage District No 17 | Diking/Drainage District |
| 726 | 0970 | Skagit County Drainage District No. 18 | Skagit County Drainage District No 18 | Diking/Drainage District |
| 727 | 0971 | Skagit County Drainage District No. 19 | Skagit County Drainage District No 19 | Diking/Drainage District |
| 728 | 0584 | Skagit County Drainage District No. 20 | Skagit County Drainage District No 20 | Diking/Drainage District |
| 729 | 0972 | Skagit County Drainage District No. 21 | Skagit County Drainage District No 21 | Diking/Drainage District |
| 730 | 0586 | Skagit County Drainage District No. 25 | Skagit County Drainage District No 25 | Diking/Drainage District |
| 731 | 0973 | Skagit County Drainage District No. 22 | Skagit County Drainage District No. 22 | Diking/Drainage District |
| 1113 | 1281 | Skagit County Fire Protection District No. 1 | Skagit County Fire Protection District No 1 | Fire Protection District |
| 1114 | 2571 | Skagit County Fire Protection District No. 10 | Skagit County Fire Protection District No 10 | Fire Protection District |
| 1115 | 2572 | Skagit County Fire Protection District No. 11 | Skagit County Fire Protection District No 11 | Fire Protection District |
| 1116 | 2573 | Skagit County Fire Protection District No. 12 | Skagit County Fire Protection District No 12 | Fire Protection District |
| 1117 | 2574 | Skagit County Fire Protection District No. 13 | Skagit County Fire Protection District No 13 | Fire Protection District |
| 1118 | 2575 | Skagit County Fire Protection District No. 14 | Skagit County Fire Protection District No 14 | Fire Protection District |
| 1119 | 2576 | Skagit County Fire Protection District No. 15 | Skagit County Fire Protection District No 15 | Fire Protection District |
| 1120 | 2577 | Skagit County Fire Protection District No. 16 | Skagit County Fire Protection District No 16 | Fire Protection District |
| 1121 | 2578 | Skagit County Fire Protection District No. 17 | Skagit County Fire Protection District No 17 | Fire Protection District |
| 1122 | 2580 | Skagit County Fire Protection District No. 19 | Skagit County Fire Protection District No 19 | Fire Protection District |
| 1123 | 1282 | Skagit County Fire Protection District No. 2 | Skagit County Fire Protection District No 2 | Fire Protection District |
| 1124 | 1283 | Skagit County Fire Protection District No. 3 | Skagit County Fire Protection District No 3 | Fire Protection District |
| 1125 | 1284 | Skagit County Fire Protection District No. 4 | Skagit County Fire Protection District No 4 | Fire Protection District |
| 1126 | 1285 | Skagit County Fire Protection District No. 5 | Skagit County Fire Protection District No 5 | Fire Protection District |
| 1127 | 1286 | Skagit County Fire Protection District No. 6 | Skagit County Fire Protection District No 6 | Fire Protection District |
| 1128 | 0366 | Skagit County Fire Protection District No. 7 | Skagit County Fire Protection District No 7 | Fire Protection District |
| 1129 | 1287 | Skagit County Fire Protection District No. 8 | Skagit County Fire Protection District No 8 | Fire Protection District |
| 1130 | 1288 | Skagit County Fire Protection District No. 9 | Skagit County Fire Protection District No 9 | Fire Protection District |
| 1372 | 0491 | Housing Authority of Skagit County | Skagit County Housing Authority | Housing Authority |
| 815 | 0761 | Port of Skagit County Industrial Development Corporation | Skagit County Industrial Development Corporation, Port of | Economic/Industrial Development |
| 1527 | 0454 | Skagit County Library District | Skagit County Library District | Library District |
| 1331 | 1487 | Skagit County Public Hospital District No. 1 | Skagit County Public Hospital District No 1 | Hospital District |
| 1332 | 1488 | Public Hospital District No. 2 of Skagit County | Skagit County Public Hospital District No 2 | Hospital District |
| 1333 | 1489 | Skagit County Public Hospital District No. 304 | Skagit County Public Hospital District No 304 | Hospital District |
| 2111 | 2744 | Skagit County Public Transportation Benefit Area | Skagit County Public Transportation Benefit Area | Transit/Transportation Authority |
| 1776 | 1797 | Public Utility District No. 1 of Skagit County | Skagit County Public Utility District No 1 | Public Utility District (PUD) |
| 2296 | 2173 | Skagit County Sewer District No. 1 | Skagit County Sewer District No 1 | Water/Sewer District |
| 2297 | 2670 | Skagit County Sewer District No. 2 | Skagit County Sewer District No 2 | Water/Sewer District |
| 2298 | 0550 | Skagit County Water District No. 1 | Skagit County Water District No 1 | Water/Sewer District |
| 1686 | 1757 | Port of Skagit County | Skagit County, Port of | Port District (Includes Airports) |
| 732 | 0964 | Skagit County Dike District No. 20 | Skagit Couty Dike District No 20 | Diking/Drainage District |
| 849 | 1295 | Skagit Emergency Communications Center | Skagit Emergency Communications Center | Emergency Management Services |
| 1553 | 1298 | Skagit Network | Skagit Network | Miscellaneous |
| 1750 | 2788 | Skagit Regional Public Facilities District | Skagit Regional Public Facilities District | Public Facilities Districts |
| 553 | S674 | Skagit Valley College | Skagit Valley College | Community or Technical College |
| 645 | 0160 | Skamania County | Skamania County | County |
| 189 | 0062 | Skamania County Cemetery District No. 1 | Skamania County Cemetery District No 1 | Cemetery District |
| 1131 | 1299 | Skamania County Fire Protection District No. 1 | Skamania County Fire Protection District No 1 | Fire Protection District |
| 1132 | 1300 | Skamania County Fire Protection District No. 2 | Skamania County Fire Protection District No 2 | Fire Protection District |
| 1133 | 1301 | Skamania County Fire Protection District No. 3 | Skamania County Fire Protection District No 3 | Fire Protection District |
| 1134 | 2447 | Skamania County Fire Protection District No. 4 | Skamania County Fire Protection District No 4 | Fire Protection District |
| 1135 | 0435 | Skamania County Fire Protection District No. 5 | Skamania County Fire Protection District No 5 | Fire Protection District |
| 1136 | 0859 | Skamania County Fire Protection District No. 6 | Skamania County Fire Protection District No 6 | Fire Protection District |
| 1334 | 1490 | Skamania County Public Hospital District | Skamania County Public Hospital District | Hospital District |
| 1777 | 1798 | Public Utility District No. 1 of Skamania County | Skamania County Public Utility District No 1 | Public Utility District (PUD) |
| 1687 | 1758 | Port of Skamania County | Skamania County, Port of | Port District (Includes Airports) |
| 850 | 1135 | Skamania Emergency Management Services | Skamania Emergency Management Services | Emergency Management Services |
| 1789 | 0880 | Skamania Regional Planning Council | Skamania Regional Planning Council | Regional Planning Council |
| 2026 | 2021 | Skamania School District No. 2 | Skamania School District No 2 | School Districts |
| 1602 | 0416 | Skamokawa Park and Recreation District | Skamokawa Park and Recreation District | Park and Recreation District |
| 1260 | 0635 | Skokomish Flood Zone | Skokomish Flood Zone | Flood Control District |
| 2027 | 1912 | Skykomish School District No. 404 | Skykomish School District No 404 | School Districts |
| 444 | 0443 | Town of Skykomish | Skykomish, Town of | City/Town |
| 2299 | 2130 | Skyway Water and Sewer District | Skyway Water and Sewer District | Water/Sewer District |
| 1470 | 0781 | Smith Canyon Irrigation District | Smith Canyon Irrigation District | Irrigation and Reclamation District |
| 851 | 1678 | Southwest Snohomish County Public Safety Communication Agency | SNOCOM | Emergency Management Services |
| 595 | 2421 | Snohomish Conservation District | Snohomish Conservation District | Conservation District |
| 646 | 0162 | Snohomish County | Snohomish County | County |
| 852 | 2728 | Snohomish County Dept of Emergency Management | Snohomish County Dept of Emergency Management | Emergency Management Services |
| 733 | 0989 | Snohomish County Dike and Drain District No. 7 | Snohomish County Dike and Drain District No 7 | Diking/Drainage District |
| 734 | 0975 | Snohomish County Dike Improvement District No. 1 | Snohomish County Dike Improvement District No 1 | Diking/Drainage District |
| 735 | 0976 | Snohomish County Diking District No. 2 | Snohomish County Diking District No 2 | Diking/Drainage District |
| 736 | 0977 | Snohomish County Diking District No. 3 | Snohomish County Diking District No 3 | Diking/Drainage District |
| 737 | 0978 | Snohomish County Diking District No. 4 | Snohomish County Diking District No 4 | Diking/Drainage District |
| 738 | 0979 | Snohomish County Diking District No. 5 | Snohomish County Diking District No 5 | Diking/Drainage District |
| 739 | 2492 | Snohomish County Drainage District No. 12 | Snohomish County Drainage District No 12 | Diking/Drainage District |
| 740 | 0988 | Snohomish County Drainage Improvement District No. 13 | Snohomish County Drainage Improvement District No 13 | Diking/Drainage District |
| 741 | 0982 | Snohomish County Drainage Improvement District No. 4A | Snohomish County Drainage Improvement District No 4A | Diking/Drainage District |
| 742 | 0986 | Snohomish County Drainage Improvement District No. 8 | Snohomish County Drainage Improvement District No 8 | Diking/Drainage District |
| 853 | 1310 | Snohomish County Emergency Radio System | Snohomish County Emergency Radio System | Emergency Management Services |
| 1137 | 1297 | Snohomish County Fire One | Snohomish County Fire One | Fire Protection District |
| 1138 | 1302 | Snohomish County Fire Protection District No. 1 | Snohomish County Fire Protection District No 1 | Fire Protection District |
| 1139 | 2581 | Snohomish County Fire Protection District No. 10 | Snohomish County Fire Protection District No 10 | Fire Protection District |
| 1140 | 2582 | Snohomish County Fire Protection District No. 11 | Snohomish County Fire Protection District No 11 | Fire Protection District |
| 1141 | 1290 | Snohomish County Fire Protection District No. 111 | Snohomish County Fire Protection District No 111 | Fire Protection District |
| 1142 | 2584 | Snohomish County Fire Protection District No. 14 | Snohomish County Fire Protection District No 14 | Fire Protection District |
| 1143 | 2585 | Snohomish County Fire Protection District No. 15 | Snohomish County Fire Protection District No 15 | Fire Protection District |
| 1144 | 2586 | Snohomish County Fire Protection District No. 16 | Snohomish County Fire Protection District No 16 | Fire Protection District |
| 1145 | 2587 | Snohomish County Fire Protection District No. 17 | Snohomish County Fire Protection District No 17 | Fire Protection District |
| 1146 | 2588 | Snohomish County Fire Protection District No. 18 | Snohomish County Fire Protection District No 18 | Fire Protection District |
| 1147 | 2589 | Snohomish County Fire Protection District No. 19 | Snohomish County Fire Protection District No 19 | Fire Protection District |
| 1148 | 2590 | Snohomish County Fire Protection District No. 20 | Snohomish County Fire Protection District No 20 | Fire Protection District |
| 1149 | 2591 | Snohomish County Fire Protection District No. 21 | Snohomish County Fire Protection District No 21 | Fire Protection District |
| 1150 | 2592 | Snohomish County Fire Protection District No. 22 | Snohomish County Fire Protection District No 22 | Fire Protection District |
| 1151 | 2593 | Snohomish County Fire Protection District No. 23 | Snohomish County Fire Protection District No 23 | Fire Protection District |
| 1152 | 2594 | Snohomish County Fire Protection District No. 24 | Snohomish County Fire Protection District No 24 | Fire Protection District |
| 1153 | 2595 | Snohomish County Fire Protection District No. 25 | Snohomish County Fire Protection District No 25 | Fire Protection District |
| 1154 | 2596 | Snohomish County Fire Protection District No. 26 | Snohomish County Fire Protection District No 26 | Fire Protection District |
| 1155 | 2597 | Snohomish County Fire Protection District No. 27 | Snohomish County Fire Protection District No 27 | Fire Protection District |
| 1156 | 0335 | Snohomish County Fire Protection District No. 28 | Snohomish County Fire Protection District No 28 | Fire Protection District |
| 1157 | 1304 | Snohomish County Fire Protection District No. 3 | Snohomish County Fire Protection District No 3 | Fire Protection District |
| 1158 | 1305 | Snohomish County Fire Protection District No. 4 | Snohomish County Fire Protection District No 4 | Fire Protection District |
| 1159 | 1306 | Snohomish County Fire Protection District No. 5 | Snohomish County Fire Protection District No 5 | Fire Protection District |
| 1160 | 1307 | Snohomish County Fire Protection District No. 7 | Snohomish County Fire Protection District No 7 | Fire Protection District |
| 1161 | 1308 | Snohomish County Fire Protection District No. 8 | Snohomish County Fire Protection District No 8 | Fire Protection District |
| 1373 | 1518 | Housing Authority of Snohomish County | Snohomish County Housing Authority | Housing Authority |
| 1528 | 2651 | Snohomish County Law Library | Snohomish County Law Library | Library District |
| 1751 | 2826 | Snohomish County Public Facility District | Snohomish County Public Facility District | Public Facilities Districts |
| 1335 | 1491 | Public Hospital District No. 1 of Snohomish County | Snohomish County Public Hospital District No 1 | Hospital District |
| 1336 | 1492 | Public Hospital District No. 2 of Snohomish County | Snohomish County Public Hospital District No 2 | Hospital District |
| 1337 | 1493 | Snohomish County Public Hospital District No. 3 | Snohomish County Public Hospital District No 3 | Hospital District |
| 2112 | 2375 | Snohomish County Public Transportation Benefit Area | Snohomish County Public Transportation Benefit Area | Transit/Transportation Authority |
| 1778 | 1800 | Snohomish County Public Utility District No. 1 | Snohomish County Public Utility District No 1 | Public Utility District (PUD) |
| 2300 | 2309 | Snohomish County Startup Water District | Snohomish County Startup Water District | Water/Sewer District |
| 1282 | 1446 | Snohomish Health District | Snohomish Health District | Health District |
| 816 | 0962 | Snohomish Industrustial Development Corporation | Snohomish Industrial Development Corporation | Economic/Industrial Development |
| 2301 | 2750 | Snohomish River Regional Water Authority | Snohomish River Regional Water Authority | Water/Sewer District |
| 2028 | 2034 | Snohomish School District No. 201 | Snohomish School District No 201 | School Districts |
| 445 | 0692 | City of Snohomish | Snohomish, City of | City/Town |
| 1529 | 1642 | Sno-Isle Regional Library | Sno-Isle Regional Library | Library District |
| 854 | 1679 | Snohomish County Police Staff and Auxiliary Service Center | SNOPAC | Emergency Management Services |
| 2029 | 1918 | Snoqualmie Valley School District No. 410 | Snoqualmie Valley School District No 410 | School Districts |
| 446 | 0445 | City of Snoqualmie | Snoqualmie, City of | City/Town |
| 2030 | 1876 | Soap Lake School District No. 156 | Soap Lake School District No 156 | School Districts |
| 447 | 0325 | City of Soap Lake | Soap Lake, City of | City/Town |
| 89 | S300 | Department of Social and Health Services | Social and Health Services, Department of | Agency, Commission, or Board |
| 2302 | 0607 | Soos Creek Water and Sewer District | Soos Creek Water and Sewer District | Water/Sewer District |
| 1569 | 0365 | South Banks Lake Mosquito District | South Banks Lake Mosquito District | Mosquito Control District |
| 855 | 0750 | South Beach Ambulance Services | South Beach Ambulance Services | Emergency Management Services |
| 2031 | 1986 | South Bend School District No. 118 | South Bend School District No 118 | School Districts |
| 448 | 0554 | City of South Bend | South Bend, City of | City/Town |
| 449 | 0475 | Town of South Cle Elum | South Cle Elum, Town of | City/Town |
| 1471 | 1573 | South Columbia Basin Irrigation District | South Columbia Basin Irrigation District | Irrigation and Reclamation District |
| 596 | 2392 | South Douglas Conservation District | South Douglas Conservation District | Conservation District |
| 2303 | 2169 | South Hill Sewer District | South Hill Sewer District | Water/Sewer District |
| 1603 | 1686 | South Kitsap Park and Recreation District | South Kitsap Park and Recreation District | Park and Recreation District |
| 2032 | 1928 | South Kitsap School District No. 402 | South Kitsap School District No 402 | School Districts |
| 856 | 1266 | South Lewis County Emergency Management Service | South Lewis County EMS | Emergency Management Services |
| 1472 | 1011 | South Naches Irrigation District | South Naches Irrigation District | Irrigation and Reclamation District |
| 450 | 0602 | Town of South Prairie | South Prairie, Town of | City/Town |
| 554 | S675 | South Puget Sound Community College | South Puget Sound Community College | Community or Technical College |
| 1688 | 1725 | Port of South Whidbey Island | South Whidbey Island, Port of | Port District (Includes Airports) |
| 1604 | 0619 | South Whidbey Parks and Recreation District | South Whidbey Parks and Recreation District | Park and Recreation District |
| 2033 | 1897 | South Whidbey School District No. 206 | South Whidbey School District No 206 | School Districts |
| 597 | 2742 | South Yakima Conservation District | South Yakima Conservation District | Conservation District |
| 121 | 0389 | Southeast Area Agency on Aging | Southeast Area Agency on Aging | Area Agency on Aging |
| 2034 | 1968 | Southside School District No. 42 | Southside School District No 42 | School Districts |
| 113 | 1023 | Southwest Air Pollution Control Authority | Southwest Air Pollution Control Authority | Air Pollution District |
| 1261 | 1420 | Southwest Lake Sammamish Flood District | Southwest Lake Sammamish Flood District | Flood Control District |
| 2304 | 2144 | Southwest Suburban Sewer District | Southwest Suburban Sewer District | Water/Sewer District |
| 1734 | 2762 | Southwest Washington Public Development Authority | Southwest Washington Public Development Authority | Public Development Authority |
| 2113 | 0875 | Southwest Washington Regional Transportation Council | Southwest Washington Regional Transportation Council | Transit/Transportation Authority |
| 451 | 0722 | Town of Spangle | Spangle, Town of | City/Town |
| 90 | S076 | Special Appropriations to the Governor | Special Appropriations to the Governor | Agency, Commission, or Board |
| 1689 | 1680 | Spokane Airports | Spokane Airports | Port District (Includes Airports) |
| 1501 | 1263 | Spokane Aquifer Joint Board | Spokane Aquifer Joint Board | Joint Operating Agency |
| 647 | 0166 | Spokane County | Spokane County | County |
| 114 | 1026 | Spokane County Air Pollution Control Authority | Spokane County Air Pollution Control Authority | Air Pollution District |
| 190 | 0063 | Spokane County Cemetery District No. 1 | Spokane County Cemetery District No 1 | Cemetery District |
| 191 | 0064 | Spokane County Cemetery District No. 2 | Spokane County Cemetery District No 2 | Cemetery District |
| 192 | 0066 | Spokane County Cemetery District No. 4 | Spokane County Cemetery District No 4 | Cemetery District |
| 193 | 0067 | Spokane County Cemetery District No. 5 | Spokane County Cemetery District No 5 | Cemetery District |
| 194 | 2471 | Spokane County Cemetery District No. 6 | Spokane County Cemetery District No 6 | Cemetery District |
| 195 | 0065 | Spokane County Cemetery District No. 3 | Spokane County Cemetery District No.3 | Cemetery District |
| 1708 | P001 | Spokane County Community Network | Spokane County Community Network | Private Nonprofit Corporation |
| 598 | 0669 | Spokane County Conservation District | Spokane County Conservation District | Conservation District |
| 1162 | 1326 | Spokane County Fire Protection District No. 1 | Spokane County Fire Protection District No 1 | Fire Protection District |
| 1163 | 2598 | Spokane County Fire Protection District No. 10 | Spokane County Fire Protection District No 10 | Fire Protection District |
| 1164 | 2599 | Spokane County Fire Protection District No. 11 | Spokane County Fire Protection District No 11 | Fire Protection District |
| 1165 | 2600 | Spokane County Fire Protection District No. 12 | Spokane County Fire Protection District No 12 | Fire Protection District |
| 1166 | 2601 | Spokane County Fire Protection District No. 13 | Spokane County Fire Protection District No 13 | Fire Protection District |
| 1167 | 1327 | Spokane County Fire Protection District No. 2 | Spokane County Fire Protection District No 2 | Fire Protection District |
| 1168 | 1328 | Spokane County Fire Protection District No. 3 | Spokane County Fire Protection District No 3 | Fire Protection District |
| 1169 | 1329 | Spokane County Fire Protection District No. 4 | Spokane County Fire Protection District No 4 | Fire Protection District |
| 1170 | 1330 | Spokane County Fire Protection District No. 5 | Spokane County Fire Protection District No 5 | Fire Protection District |
| 1171 | 1331 | Spokane County Fire Protection District No. 6 | Spokane County Fire Protection District No 6 | Fire Protection District |
| 1172 | 1332 | Spokane County Fire Protection District No. 8 | Spokane County Fire Protection District No 8 | Fire Protection District |
| 1173 | 1333 | Spokane County Fire Protection District No. 9 | Spokane County Fire Protection District No 9 | Fire Protection District |
| 1530 | 0571 | Spokane County Law Library | Spokane County Law Library | Library District |
| 1531 | 1643 | Spokane County Library District | Spokane County Library District | Library District |
| 2144 | 2812 | Spokane County Water Conservation Board | Spokane County Water Conservation Board | Water Conservation Board |
| 2305 | 2719 | Spokane County Water District No. 12 | Spokane County Water District No 12 | Water/Sewer District |
| 2306 | 0666 | Spokane County Water District No. 3 | Spokane County Water District No 3 | Water/Sewer District |
| 1374 | 1519 | Spokane Housing Authority | Spokane Housing Authority | Housing Authority |
| 2126 | S377 | Spokane Intercollegiate Research & Technical Institute | Spokane Intercollegiate Research & Technical Institute | University or College |
| 1554 | 2756 | City of Spokane | Spokane Parking Garage | Miscellaneous |
| 1752 | 0779 | Spokane Public Facilities District | Spokane Public Facilities District | Public Facilities Districts |
| 1283 | 1447 | Spokane Regional Health District | Spokane Regional Health District | Health District |
| 1790 | 2482 | Spokane Regional Transportation Council | Spokane Regional Transportation Council | Regional Planning Council |
| 2035 | 2040 | Spokane School District No. 81 | Spokane School District No 81 | School Districts |
| 2114 | 0345 | Spokane Transit Authority | Spokane Transit Authority | Transit/Transportation Authority |
| 452 | 0724 | City of Spokane | Spokane, City of | City/Town |
| 2036 | 1960 | Sprague School District No. 8-163 | Sprague School District No 8-163 | School Districts |
| 453 | 0516 | City of Sprague | Sprague, City of | City/Town |
| 454 | 0744 | Town of Springdale | Springdale, Town of | City/Town |
| 455 | 0825 | Town of Saint John | St. John, Town of | City/Town |
| 456 | 0695 | City of Stanwood | Stanwood, City of | City/Town |
| 2037 | 2039 | Stanwood-Camano School District No. 401 | Stanwood-Camano School District No 401 | School Districts |
| 2038 | 1868 | Star School District No. 54 | Star School District No 54 | School Districts |
| 2039 | 1846 | Starbuck School District No. 35 | Starbuck School District No 35 | School Districts |
| 457 | 0258 | Town of Starbuck | Starbuck, Town of | City/Town |
| 91 | S126 | State Investment Board | State Investment Board | Agency, Commission, or Board |
| 92 | S225 | Washington State Patrol | State Patrol, Washington | Agency, Commission, or Board |
| 93 | S351 | State School for the Blind | State School for the Blind | Agency, Commission, or Board |
| 94 | S040 | Statute Law Committee | Statute Law Committee | Agency, Commission, or Board |
| 2040 | 1823 | Stehekin School District No. 69 | Stehekin School District No 69 | School Districts |
| 2041 | 1993 | Steilacoom Historical School District No. 1 | Steilacoom Historical School District No 1 | School Districts |
| 458 | 0604 | Town of Steilacoom | Steilacoom, Town of | City/Town |
| 1473 | 1553 | Stemilt Irrigation District | Stemilt Irrigation District | Irrigation and Reclamation District |
| 2042 | 2098 | Steptoe School District No. 304 | Steptoe School District No 304 | School Districts |
| 2307 | 2188 | Steptoe Sewer District | Steptoe Sewer District | Water/Sewer District |
| 648 | 0168 | Stevens County | Stevens County | County |
| 599 | 2423 | Stevens County Conservation District | Stevens County Conservation District | Conservation District |
| 1174 | 1338 | Stevens County Fire Protection District No. 1 | Stevens County Fire Protection District No 1 | Fire Protection District |
| 1175 | 1139 | Stevens County Fire Protection District No. 10 | Stevens County Fire Protection District No 10 | Fire Protection District |
| 1176 | 1339 | Stevens County Fire Protection District No. 2 | Stevens County Fire Protection District No 2 | Fire Protection District |
| 1177 | 1340 | Stevens County Fire Protection District No. 3 | Stevens County Fire Protection District No 3 | Fire Protection District |
| 1178 | 1341 | Stevens County Fire Protection District No. 4 | Stevens County Fire Protection District No 4 | Fire Protection District |
| 1179 | 1342 | Stevens County Fire Protection District No. 5 | Stevens County Fire Protection District No 5 | Fire Protection District |
| 1180 | 1343 | Stevens County Fire Protection District No. 6 | Stevens County Fire Protection District No 6 | Fire Protection District |
| 1181 | 2602 | Stevens County Fire Protection District No. 7 | Stevens County Fire Protection District No 7 | Fire Protection District |
| 1182 | 1138 | Stevens County Fire Protection District No. 9 | Stevens County Fire Protection District No 9 | Fire Protection District |
| 1183 | 2819 | Stevens County Fire Protection District No. 12 | Stevens County Fire Protection District No. 12 | Fire Protection District |
| 2308 | 2679 | Stevens County Hunters Water District | Stevens County Hunters Water District | Water/Sewer District |
| 1779 | 1802 | Stevens County Public Utility District No. 1 | Stevens County Public Utility District No 1 | Public Utility District (PUD) |
| 1532 | 1179 | Stevens County Rural Library District | Stevens County Rural Library District | Library District |
| 2145 | 2813 | Stevens County Water Conservation Board | Stevens County Water Conservation Board | Water Conservation Board |
| 2309 | 2156 | Stevens Pass Sewer District | Stevens Pass Sewer District | Water/Sewer District |
| 459 | 0652 | City of Stevenson | Stevenson, City of | City/Town |
| 2043 | 2022 | Stevenson-Carson School District No. 303 | Stevenson-Carson School District No 303 | School Districts |
| 1605 | 0315 | Stillaquamish Park and Recreation District | Stillaquamish Park and Recreation District | Park and Recreation District |
| 2310 | 1176 | Strathview Water District No. 16 | Strathview Water District No. 16 | Water/Sewer District |
| 524 | S526 | Washington State Strawberry Commission | Strawberry Commission, Washington State | Commodity Commissions |
| 2044 | 2036 | Sultan School District No. 311 | Sultan School District No 311 | School Districts |
| 460 | 0698 | City of Sultan | Sultan, City of | City/Town |
| 461 | 0793 | City of Sumas | Sumas, City of | City/Town |
| 2045 | 2060 | Summit Valley School District No. 202 | Summit Valley School District No 202 | School Districts |
| 2046 | 1999 | Sumner School District No. 320 | Sumner School District No 320 | School Districts |
| 462 | 0606 | City of Sumner | Sumner, City of | City/Town |
| 2311 | 0371 | Sun Harbor Water District No. 3 | Sun Harbor Water District No 3 | Water/Sewer District |
| 1474 | 1269 | Sunnyside Division Board of Control | Sunnyside Division Board of Control | Irrigation and Reclamation District |
| 2047 | 2111 | Sunnyside School District No. 201 | Sunnyside School District No 201 | School Districts |
| 1475 | 1626 | Sunnyside Valley Irrigation District | Sunnyside Valley Irrigation District | Irrigation and Reclamation District |
| 463 | 0846 | City of Sunnyside | Sunnyside, City of | City/Town |
| 1375 | 1523 | Housing Authority of Sunnyside | Sunnyside, Housing Authority | Housing Authority |
| 1690 | 1767 | Port of Sunnyside | Sunnyside, Port of | Port District (Includes Airports) |
| 2312 | 2282 | Sunnyslope Water District | Sunnyslope Water District | Water/Sewer District |
| 95 | S045 | Supreme Court | Supreme Court | Agency, Commission, or Board |
| 2313 | 0353 | Swan Town Water District | Swan Town Water District | Water/Sewer District |
