| Table ID No. | MCAG | Legal Name | Entity Name | Government Description |
| 555 | S678 | Tacoma Community College | Tacoma Community College | Community or Technical College |
| 1735 | 0153 | Tacoma Community Redevelopment Authority | Tacoma Community Redevelopment Authority | Public Development Authority |
| 1555 | 0726 | Tacoma Employees Retirement System | Tacoma Employees Retirement System | Miscellaneous |
| 1376 | 1514 | Housing Authority of the City of Tacoma | Tacoma Housing Authority | Housing Authority |
| 2048 | 1996 | Tacoma School District No. 10 | Tacoma School District No 10 | School Districts |
| 464 | 0610 | City of Tacoma | Tacoma, City of | City/Town |
| 1691 | 1752 | Port of Tacoma | Tacoma, Port of | Port District (Includes Airports) |
| 1502 | 0120 | Tacoma-Pierce County Employment and Training Consortium | Tacoma-Pierce County Employment and Training Consortium | Joint Operating Agency |
| 1284 | 0462 | Tacoma-Pierce County Health Department | Tacoma-Pierce County Health Department | Health District |
| 2049 | 1888 | Taholah School District No. 77 | Taholah School District No 77 | School Districts |
| 2050 | 1917 | Tahoma School District No. 409 | Tahoma School District No 409 | School Districts |
| 1692 | 1747 | Port of Tahuya | Tahuya, Port of | Port District (Includes Airports) |
| 1606 | 0788 | Tanglewilde Park and Recreation District No. 1 | Tanglewilde Park and Recreation District No 1 | Park and Recreation District |
| 96 | S142 | Board of Tax Appeals | Tax Appeals Board | Agency, Commission, or Board |
| 2051 | 2093 | Tekoa School District No. 265 | Tekoa School District No 265 | School Districts |
| 465 | 0827 | City of Tekoa | Tekoa, City of | City/Town |
| 2052 | 2073 | Tenino School District No. 402 | Tenino School District No 402 | School Districts |
| 466 | 0757 | City of Tenino | Tenino, City of | City/Town |
| 1476 | 1627 | Terrace Heights Irrigation District | Terrace Heights Irrigation District | Irrigation and Reclamation District |
| 2314 | 2189 | Terrace Heights Sewer District | Terrace Heights Sewer District | Water/Sewer District |
| 1709 | P002 | The Greater Pierce County Community Network | The Greater Pierce County Community Network | Private Nonprofit Corporation |
| 196 | 2472 | Thorp Cemetery District | Thorp Cemetery District | Cemetery District |
| 2053 | 1931 | Thorp School District No. 400 | Thorp School District No 400 | School Districts |
| 1533 | 2753 | Three Creeks Library District | Three Creeks Library District | Library District |
| 2315 | 2196 | Three Lakes Water District | Three Lakes Water District | Water/Sewer District |
| 600 | 2424 | Thurston County Conservation District | Thurston Conservation District | Conservation District |
| 649 | 0170 | Thurston County | Thurston County | County |
| 197 | 0068 | Thurston County Cemetery District No. 1 | Thurston County Cemetery District No 1 | Cemetery District |
| 198 | 0410 | Thurston County Cemetery District No. 2 | Thurston County Cemetery District no 2 | Cemetery District |
| 743 | 0991 | Thurston County Drainage District No. 1 | Thurston County Drainage District No 1 | Diking/Drainage District |
| 744 | 0993 | Thurston County Drainage District No. 3 | Thurston County Drainage District No 3 | Diking/Drainage District |
| 745 | 0997 | Thurston County Drainage District No. 7 | Thurston County Drainage District No 7 | Diking/Drainage District |
| 746 | 0998 | Thurston County Drainage District No. 8 | Thurston County Drainage District No 8 | Diking/Drainage District |
| 747 | 2801 | Thurston County Drainage District No. 11 | Thurston County Drainage District No. 11 | Diking/Drainage District |
| 1184 | 1344 | Thurston County Fire Protection District No. 1 | Thurston County Fire Protection District No 1 | Fire Protection District |
| 1185 | 2604 | Thurston County Fire Protection District No. 10 | Thurston County Fire Protection District No 10 | Fire Protection District |
| 1186 | 2605 | Thurston County Fire Protection District No. 11 | Thurston County Fire Protection District No 11 | Fire Protection District |
| 1187 | 2606 | Thurston County Fire Protection District No. 12 | Thurston County Fire Protection District No 12 | Fire Protection District |
| 1188 | 2607 | Thurston County Fire Protection District No. 13 | Thurston County Fire Protection District No 13 | Fire Protection District |
| 1189 | 2610 | Thurston County Fire Protection District No. 16 | Thurston County Fire Protection District No 16 | Fire Protection District |
| 1190 | 2611 | Thurston County Fire Protection District No. 17 | Thurston County Fire Protection District No 17 | Fire Protection District |
| 1191 | 1346 | Thurston County Fire Protection District No. 3 | Thurston County Fire Protection District No 3 | Fire Protection District |
| 1192 | 1347 | Thurston County Fire Protection District No. 4 | Thurston County Fire Protection District No 4 | Fire Protection District |
| 1193 | 1348 | Thurston County Fire Protection District No. 5 | Thurston County Fire Protection District No 5 | Fire Protection District |
| 1194 | 1349 | Thurston County Fire Protection District No. 6 | Thurston County Fire Protection District No 6 | Fire Protection District |
| 1195 | 1350 | Thurston County Fire Protection District No. 7 | Thurston County Fire Protection District No 7 | Fire Protection District |
| 1196 | 1351 | Thurston County Fire Protection District No. 8 | Thurston County Fire Protection District No 8 | Fire Protection District |
| 1197 | 1352 | Thurston County Fire Protection District No. 9 | Thurston County Fire Protection District No 9 | Fire Protection District |
| 1377 | 1520 | Housing Authority of Thurston County | Thurston County Housing Authority | Housing Authority |
| 1556 | 2759 | Thurston County Joint Animal Services | Thurston County Joint Animal Services | Miscellaneous |
| 1557 | 2758 | Thurston County Narcotics Task Force | Thurston County Narcotics Task Force | Miscellaneous |
| 1780 | 1803 | Thurston County Public Utility District | Thurston County Public Utility District | Public Utility District (PUD) |
| 2146 | 2814 | Thurston County Water Conservation Board | Thurston County Water Conservation Board | Water Conservation Board |
| 1791 | 0882 | Thurston Regional Planning Council | Thurston Regional Planning Council | Regional Planning Council |
| 467 | 0849 | Town of Tieton | Tieton, Town of | City/Town |
| 1534 | 1644 | Timberland Regional Library | Timberland Regional Library | Library District |
| 1796 | 1195 | Timberlands Regional Support Network | Timberlands Regional Support Network | Regional Support Network (RSN) |
| 97 | S304 | Tobacco Settlement Authority | Tobacco Settlement Authority | Agency, Commission, or Board |
| 2054 | 1955 | Toledo School District No. 237 | Toledo School District No 237 | School Districts |
| 1693 | 1677 | Toledo Winlock Airport | Toledo Winlock Airport | Port District (Includes Airports) |
| 468 | 0498 | City of Toledo | Toledo, City of | City/Town |
| 2055 | 1982 | Tonasket School District No. 404 | Tonasket School District No 404 | School Districts |
| 469 | 0541 | City of Tonasket | Tonasket, City of | City/Town |
| 2056 | 2112 | Toppenish School District No. 202 | Toppenish School District No 202 | School Districts |
| 470 | 0851 | City of Toppenish | Toppenish, City of | City/Town |
| 2057 | 2078 | Touchet School District No. 300 | Touchet School District No 300 | School Districts |
| 1477 | 1615 | Touchet Valley Irrigation District No. 16 | Touchet Valley Irrigation District No 16 | Irrigation and Reclamation District |
| 2316 | 2323 | Touchet Water District No. 2 | Touchet Water District No 2 | Water/Sewer District |
| 2058 | 1849 | Toutle Lake School District No. 130 | Toutle Lake School District No 130 | School Districts |
| 2317 | 2283 | Tracyton Water District | Tracyton Water District | Water/Sewer District |
| 1694 | 1740 | Port of Tracyton | Tracyton, Port of | Port District (Includes Airports) |
| 98 | S228 | Washington Traffic Safety Commission | Traffic Safety Commission | Agency, Commission, or Board |
| 2318 | 0301 | Trails End Water District | Trails End Water District | Water/Sewer District |
| 99 | S410 | Transportation Commission | Transportation Commission | Agency, Commission, or Board |
| 100 | S407 | Transportation Improvement Board | Transportation Improvement Board | Agency, Commission, or Board |
| 101 | S405 | Department of Transportation | Transportation, Department of | Agency, Commission, or Board |
| 102 | S090 | Office of the State Treasurer | Treasurer, Office of State | Agency, Commission, or Board |
| 525 | S533 | Washington State Tree Fruit Research Commission | Tree Fruit Research Commission, Washington State | Commodity Commissions |
| 1478 | 1592 | Trentwood Irrigation District No. 3 | Trentwood Irrigation District No 3 | Irrigation and Reclamation District |
| 2319 | 2193 | Tri-Cities Estates Water District | Tri-Cities Estates Water District | Water/Sewer District |
| 817 | 0881 | Tri-County Economic Development District | Tri-County Economic Development District | Economic/Industrial Development |
| 1695 | 0701 | Tri-Port Export Services | Tri-Port Export Services | Port District (Includes Airports) |
| 2059 | 1938 | Trout Lake School District No. 400 | Trout Lake School District No 400 | School Districts |
| 2060 | 1914 | Tukwila School District No. 406 | Tukwila School District No 406 | School Districts |
| 471 | 0447 | City of Tukwila | Tukwila, City of | City/Town |
| 2061 | 2068 | Tumwater School District No. 33 | Tumwater School District No 33 | School Districts |
| 472 | 0759 | City of Tumwater | Tumwater, City of | City/Town |
| 473 | 0543 | Town of Twisp | Twisp, Town of | City/Town |
