Kittitas County, Washington
County seat: Ellensburg · Population 48,803 (2025) · 2,297 sq mi
Kittitas County is the 23rd most populous of Washington's 39 counties, with 48,803 people (2025 estimate). Its county seat is Ellensburg. The map shows its 5 cities and towns and the 5 neighboring counties.
Kittitas County facts
- County seat
- Ellensburg
- Population (2025 estimate)
- 48,803 +4.9% since 2020
- Land area
- 2,297 sq mi 8th largest of 39
- Water area
- 36 sq mi
- Population density
- 21 per sq mi
- Established
- 1883
- Largest city
- Ellensburg 21,308
- Median household income
- $73,804
- Cities and towns
- 5 plus 5 CDPs
- ZIP codes
- 12
- Time zone
- Pacific
- FIPS code
- 53037
Cities and towns in Kittitas County
Kittitas County has 5 incorporated cities, towns and villages. Populations count the people living inside Kittitas County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Ellensburg (county seat) | City | 21,308 | |
| Cle Elum | City | 2,288 | |
| Kittitas | City | 1,440 | |
| Roslyn | City | 962 | |
| South Cle Elum | Town | 588 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Easton | 647 | |
| Snoqualmie Pass | 428 | |
| Thorp | 230 | |
| Ronald | 119 | |
| Vantage | 0 |
ZIP codes in Kittitas County
12 ZIP codes reach into Kittitas County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 98068 also King County
- 98828 also Chelan County
- 98901 also Yakima County
- 98922
- 98925
- 98926
- 98934
- 98940
- 98941
- 98943
- 98946
- 98950
Population of Kittitas County, 2020–2025
Kittitas County grew by 2,263 people (+4.9%) between April 2020 and July 2025: 15 more deaths than births and a net gain of 2,261 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 46,823 |
| 2021 | 45,653 |
| 2022 | 47,322 |
| 2023 | 47,765 |
| 2024 | 48,107 |
| 2025 | 48,803 |
Neighboring counties
- Yakima County south · 259,185 people
- Chelan County north · 81,941 people
- King County northwest · 2,344,939 people
- Grant County east · 105,727 people
- Douglas County northeast · 46,473 people
Printable Kittitas County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (145 KB)
- PNG (2400 px) (88 KB)
Paste this code to embed the map on your site:
Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
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