Voter file loaded June 9, 2026 · figures are from that file, held as a fixed record
Kittitas County, Washington has 32,182 active registered voters across 53 precincts, as of July 2026.
Party registration
Washington doesn't register voters by party, so there's no party breakdown to show. Party lean is usually inferred from primary participation; that data is in the voter file and available inside Motion51.
How Kittitas County voted for president
Election results are public records.
Kittitas County at a glance.
Kittitas County had an estimated 48,172 residents in July 2024, the 24th most populous of Washington's 39 counties, up 3.5% since the 2020 census. Of those, 40,124 are 18 or older, the voting-age population, and 19.0% are 65 or older. Its 32,182 active registered voters equal about 80.2% of that voting-age population.
It covers 2,297 square miles of land (21 people per square mile), and 45.5% of residents live outside any incorporated city or town. The largest cities and towns are Ellensburg (20,996), Cle Elum (2,276), Kittitas (1,445), Roslyn (960) and South Cle Elum (572). The American Community Survey (2020-2024) puts it at a median age of 35.8, a median household income of $73,804, 37.0% of adults 25 and older holding a bachelor's degree or higher and 61.5% of occupied homes owned by the people living in them.
In 2024, 26,309 votes were cast for president, about 65.6% of the voting-age population; the Democratic ticket took 41.1% and the Republican ticket 55.7%. The two-party margin moved from R+8.1 in 2008 to R+14.6 in 2024.
- Population (2024 estimate)
- 48,172
- Population (2020 census base)
- 46,535
- Voting-age population (18+)
- 40,124
- Active voters per 100 adults
- 80.2
- Residents 65 and older
- 19.0%
- People per square mile
- 21
- Living outside incorporated places
- 45.5%
- Land area
- 2,297 sq mi
- Median age
- 35.8
- Median household income
- $73,804
- Adults 25+ with a bachelor's degree
- 37.0%
- Owner-occupied homes
- 61.5%
Largest cities and towns
- Ellensburg 20,996
- Cle Elum 2,276
- Kittitas 1,445
- Roslyn 960
- South Cle Elum 572
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 41.1% | 55.7% | R+14.6 | 26,309 |
| 2020 | 43.3% | 53.5% | R+10.2 | 26,364 |
| 2016 | 39.2% | 53.7% | R+14.5 | 18,334 |
| 2012 | 42.6% | 55.3% | R+12.7 | 15,152 |
| 2008 | 44.9% | 53.0% | R+8.1 | 17,868 |
Sources: U.S. Census Bureau Vintage 2024 population estimates and 2024 Gazetteer; American Community Survey 2020–2024 5-year estimates; certified county presidential returns. Growth, density and turnout are simple arithmetic on those figures.
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