County Maps US

Kittitas County, Washington

A county in Washington, ranked 23 of 39 by population.

CountyFIPS 53037

Within Washington
Kittitas County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Ellensburg, the county seat, located via the 2025 Census Gazetteer.

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Population
48,803
+1,980 (+4.2%) since 2020
Land area
2,297
square miles. A further 1.5% of the total area is water
Population density
21.2
people per square mile, computed rather than published
County seat
Ellensburg
Seat of county government.
Established
1883
142 years ago
Largest city
Ellensburg city
Population 21,308.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Kittitas County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Kittitas County, Washington from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 800 by 673 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Kittitas County ranks

Position among the 39 counties of Washington, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn WashingtonNationally
Population48,80323rd of 391,028th of 3,144
Land area2,297 sq mi8th of 39243rd of 3,144
Population density21.2 per sq mi27th of 392,202nd of 3,144
Median household income$73,80422nd of 39929th of 3,143

Full data for Kittitas County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population48,803Vintage 2025 Population Estimates
Population in 202046,823Vintage 2025 Population Estimates
2020 estimates base?46,540Vintage 2025 Population Estimates
Land area2,297 sq mi2025 Gazetteer Files
Water area35.7 sq mi2025 Gazetteer Files
Total area2,333 sq mi2025 Gazetteer Files
Population density?21.2 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$73,804American Community Survey 2020-2024 5-Year Estimates
Median home value$497,400American Community Survey 2020-2024 5-Year Estimates
Median age35.8American Community Survey 2020-2024 5-Year Estimates
Households19,993American Community Survey 2020-2024 5-Year Estimates
Housing units24,674American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
-19
379 births, 398 deaths
Net migration
+716
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 5 areas bordering Kittitas County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Yakima CountyWashington90 mi259,185
Chelan CountyWashington70 mi81,941
King CountyWashington69 mi2,344,939
Grant CountyWashington37 mi105,727
Douglas CountyWashington6.3 mi46,473

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 39 counties of Washington

Open the interactive Washington county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.