18 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Hazel Dell | Clark County | 23,534 |
| Hoquiam | Grays Harbor County | 8,792 |
| Hobart | King County | 7,388 |
| Hockinson | Clark County | 6,098 |
| Hansville | Kitsap County | 3,285 |
| High Bridge | Snohomish County | 2,840 |
| Home | Pierce County | 1,771 |
| Harrah | Yakima County | 562 |
| Harrington | Lincoln County | 469 |
| Hunts Point | King County | 440 |
| Hamilton | Skagit County | 291 |
| Humptulips | Grays Harbor County | 242 |
| Hartline | Grant County | 175 |
| Herron Island | Pierce County | 115 |
| Hoodsport | Mason County | 108 |
| Hatton | Adams County | 87 |
| Hat Island | Snohomish County | 26 |
| Hogans Corner | Grays Harbor County | 10 |