| Table ID No. | MCAG | Legal Name | Entity Name | Government Description |
| 319 | 0638 | Town of Hamilton | Hamilton, Town of | City/Town |
| 2212 | 0737 | Hangman Hills Water District No. 15 | Hangman Hills Water District No 15 | Water/Sewer District |
| 1307 | 0141 | Harborview Medical Center | Harborview Medical Center | Hospital District |
| 517 | S521 | Washington State Hardwoods Commission | Hardwoods Commission, Washington State | Commodity Commissions |
| 320 | 0836 | Town of Harrah | Harrah, Town of | City/Town |
| 1890 | 1965 | Harrington School District No. 204 | Harrington School District No 204 | School Districts |
| 321 | 0510 | City of Harrington | Harrington, City of | City/Town |
| 322 | 0312 | Town of Hartline | Hartline, Town of | City/Town |
| 323 | 0184 | Town of Hatton | Hatton, Town of | City/Town |
| 2213 | 0273 | Hazel Dell Sewer District | Hazel Dell Sewer District | Water/Sewer District |
| 38 | S107 | State Health Care Authority | Health Care Authority, Washington State | Agency, Commission, or Board |
| 39 | S599 | Washington Health Care Facilities Authority | Health Care Facilities Authority | Agency, Commission, or Board |
| 40 | S303 | Department of Health | Health, Department of | Agency, Commission, or Board |
| 1434 | 1583 | Helensdale Irrigation District | Helensdale Irrigation District | Irrigation and Reclamation District |
| 41 | S343 | Higher Education Coordinating Board | Higher Education Coordinating Board | Agency, Commission, or Board |
| 42 | S346 | Washington Higher Education Facilities Authority | Higher Education Facilities Authority | Agency, Commission, or Board |
| 1435 | 1565 | Highland Irrigation District | Highland Irrigation District | Irrigation and Reclamation District |
| 1891 | 2113 | Highland School District No. 203 | Highland School District No 203 | School Districts |
| 2214 | 1243 | Highland Water District | Highland Water District | Water/Sewer District |
| 2215 | 2136 | Highlands Sewer District | Highlands Sewer District | Water/Sewer District |
| 544 | S652 | Highline Community College | Highline Community College | Community or Technical College |
| 1892 | 1909 | Highline School District No. 401 | Highline School District No 401 | School Districts |
| 2216 | 2240 | Highline Water District | Highline Water District | Water/Sewer District |
| 43 | S118 | Washington State Commission on Hispanic Affairs | Hispanic Affairs, Commission on | Agency, Commission, or Board |
| 1720 | 2733 | Historic Seattle Preservation and Development Authority | Historic Seattle Preservation and Development Authority | Public Development Authority |
| 44 | S390 | Washington State Historical Society | Historical Society, Washington State | Agency, Commission, or Board |
| 1893 | 1836 | Hockinson School District No. 98 | Hockinson School District No 98 | School Districts |
| 2217 | 2678 | Holmes Harbor Sewer District | Holmes Harbor Sewer District | Water/Sewer District |
| 45 | S302 | Home Care Quality Assurance | Home Care Quality Assurance | Agency, Commission, or Board |
| 2218 | 0415 | Home Valley Water District | Home Valley Water District | Water/Sewer District |
| 1894 | 1974 | Hood Canal School District No. 404 | Hood Canal School District No 404 | School Districts |
| 1652 | 1745 | Port of Hoodsport | Hoodsport, Port of | Port District (Includes Airports) |
| 518 | S522 | Washington State Hop Commission | Hop Commission, Washington State | Commodity Commissions |
| 678 | 0994 | Hopkins Drainage District | Hopkins Drainage District | Diking/Drainage District |
| 1895 | 1883 | Hoquiam School District No. 28 | Hoquiam School District No 28 | School Districts |
| 324 | 0340 | City of Hoquiam | Hoquiam, City of | City/Town |
| 46 | S185 | Washington Horse Racing Commission | Horse Racing Commission | Agency, Commission, or Board |
| 47 | S011 | House of Representatives | House of Representatives | Agency, Commission, or Board |
| 48 | S148 | Washington State Housing Finance Commission | Housing Finance Commission, Washington State | Agency, Commission, or Board |
| 49 | S120 | Human Rights Commission | Human Rights Commission | Agency, Commission, or Board |
| 325 | 0397 | Town of Hunts Point | Hunts Point, Town of | City/Town |
| 1721 | 2767 | Hurricane Ridge Public Development Authority | Hurricane Ridge Public Development Authority | Public Development Authority |
| 1436 | 1597 | Hutchinson Irrigation District No. 16 | Hutchinson Irrigation District No 16 | Irrigation and Reclamation District |
| 1437 | 1609 | Hydro Irrigation District No. 9 | Hydro Irrigation District No 9 | Irrigation and Reclamation District |
