Counties in Washington
Each county page says how cases move there under Washington's rules, and lists the police agencies that serve it.
39 counties, largest first
- King County2,344,939 people · 41 agencies
- Pierce County946,288 people · 22 agencies
- Snohomish County870,656 people · 22 agencies
- Spokane County558,344 people · 9 agencies
- Clark County532,119 people · 9 agencies
- Thurston County304,261 people · 10 agencies
- Kitsap County283,374 people · 5 agencies
- Yakima County259,185 people · 15 agencies
- Whatcom County236,392 people · 8 agencies
- Benton County221,722 people · 6 agencies
- Skagit County132,975 people · 7 agencies
- Cowlitz County114,885 people · 6 agencies
- Grant County105,727 people · 10 agencies
- Franklin County102,612 people · 3 agencies
- Lewis County88,062 people · 10 agencies
- Island County85,657 people · 4 agencies
- Chelan County81,941 people · 3 agencies
- Clallam County78,202 people · 4 agencies
- Grays Harbor County78,144 people · 10 agencies
- Mason County71,165 people · 2 agencies
- Walla Walla County62,361 people · 4 agencies
- Stevens County49,668 people · 6 agencies
- Kittitas County48,803 people · 6 agencies
- Whitman County48,512 people · 14 agencies
- Douglas County46,473 people · 4 agencies
- Okanogan County45,230 people · 12 agencies
- Jefferson County33,970 people · 2 agencies
- Pacific County24,357 people · 5 agencies
- Klickitat County24,331 people · 4 agencies
- Asotin County22,545 people · 3 agencies
- Adams County21,488 people · 3 agencies
- San Juan County18,577 people · 1 agencies
- Pend Oreille County14,457 people · 4 agencies
- Skamania County12,669 people · 3 agencies
- Lincoln County11,982 people · 8 agencies
- Ferry County7,517 people · 2 agencies
- Wahkiakum County4,873 people · 1 agencies
- Columbia County4,141 people · 2 agencies
- Garfield County2,416 people · 2 agencies
Population: Census Bureau county population estimates, Vintage 2025 (cc-est2025-alldata), July 1, 2025.