• county
  • FIPS 53037
  • Largest town: Ellensburg

Kittitas County, Washington

Kittitas County had 48,172 residents in the Census Vintage 2024 estimate, on 2,297.3 square miles of land. It ranks 24th of 39 in Washington by population and 8th by land area.

Population
48,172
#24 of 39 in Washington · #1,033 in US
Area
2,297.3 sq mi
#8 of 39 in Washington · #243 in US
Density
21 / sq mi
#27 of 39 in Washington · #2,213 in US
Median household income
$66,374
#30 of 39 in Washington · #1,263 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Kittitas County within Washington. Pin: Olympia.

Measure from here

Tools and pages that start from Kittitas County

Kittitas County population, land area and income

Kittitas County had 48,172 residents in the Census Vintage 2024 estimate, on 2,297.3 square miles of land. It ranks 24th of 39 in Washington by population and 8th by land area. That works out to 21.0 people per square mile, below the US average of 96.3, and below the national county median.

The median county-equivalent in Washington has 69,632 residents; Kittitas County is somewhat smaller.

Its SAIPE 2023 median household income of $66,374 is above the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

48,172

3144th1st

1033rd of 3,144 (US)

Land area

2,297 sq mi

3144th1st

243rd of 3,144 (US)

Density

21.0 / sq mi

3144th1st

2213th of 3,144 (US)

Median household income

$66,374

3143rd1st

1263rd of 3,143 (US)

Rank within Washington (39)

Population

48,172

39th1st

24th of 39 (WA)

Land area

2,297 sq mi

39th1st

8th of 39 (WA)

Density

21.0 / sq mi

39th1st

27th of 39 (WA)

Median household income

$66,374

39th1st

30th of 39 (WA)

How Kittitas County's population changed since 2020

Kittitas County gained 1,349 residents between the July 2020 and July 2024 estimates, a rise of 2.9%. That ranks 22nd of 39 in Washington for growth. The median Washington county changed by +3.2%, and the state as a whole by +3.0%.

Since the April 2020 estimates base, Kittitas County recorded 1,712 births and 1,630 deaths, a natural change of +82. Net international migration added +160 and net domestic migration, people moving to or from other US counties, came to +1,353. The largest single component was domestic migration, which added 1,353 people.

46.8k202045.7k202147.4k202247.8k202348.2k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
1,712
Deaths
1,630
Net international migration
+160
Net domestic migration
+1,353
Change, July 2023 to July 2024
+327

Where Kittitas County is

The Census internal point of Kittitas County is at 47.124400, -120.676700. It sits in UTM zone 10N. The map shades Washington's 39 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Kittitas County outlined. Dots are towns of 1,000+ people with residents in it.

King County: +2.9%Thurston County: +2.3%Garfield County: +4.7%Adams County: +2.1%Kitsap County: +2.0%Mason County: +5.5%Stevens County: +5.2%Walla Walla County: -0.9%Whitman County: +1.2%Pierce County: +1.9%Benton County: +5.2%Columbia County: +1.8%Skamania County: +5.1%Douglas County: +6.4%Kittitas County: +2.9%Klickitat County: +5.7%Pacific County: +3.2%Grant County: +5.3%Grays Harbor County: +2.7%Jefferson County: +2.7%Lincoln County: +8.6%San Juan County: +4.7%Skagit County: +2.2%Island County: -0.6%Ferry County: +4.8%Chelan County: +2.4%Clark County: +4.3%Asotin County: +0.9%Franklin County: +4.2%Whatcom County: +3.3%Snohomish County: +4.1%Pend Oreille County: +6.1%Yakima County: +0.7%Clallam County: +0.8%Wahkiakum County: +7.9%Spokane County: +2.7%Okanogan County: +6.6%Cowlitz County: +2.7%Lewis County: +5.4%
Change 2020 to 2024
  1. < +1.9%
  2. < +2.7%
  3. < +4.2%
  4. < +5.3%
  5. ≥ +5.3%
no data

Orange pin: Kittitas County internal point. Dark pin: Olympia.

Internal point

Decimal
47.124400, -120.676700
DMS
47°07'27.84"N 120°40'36.12"W
UTM
10N 676216.3E 5221607.3N
Geohash
c26hjftzt
Plus code
84VX48FF+Q8

Towns in Kittitas County

3 incorporated places of 1,000+ people have residents in Kittitas County, 24,717 people together, or 51% of the county. Each figure counts only the part of the town inside Kittitas County; towns marked "part" extend into another county. The largest is Ellensburg with 20,996.

  1. 01Ellensburg20,996
  2. 02Cle Elum2,276
  3. 03Kittitas1,445
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Kittitas County

The Census 2024 county adjacency file lists 5 neighbors for Kittitas County. The most populous is King County, WA, with 2,340,211 residents. Distances run between Census internal points in a straight line.

Distance to Olympia and the nearest big city

Olympia is 104.8 miles W of Kittitas County's internal point in a straight line. The nearest place of 100,000 or more is Kent, WA (population 136,588), 74.3 miles away. The nearest place of 10,000 or more is Ellensburg, WA (population 20,996), 10.4 miles away.

Kittitas County FIPS code

The FIPS code of Kittitas County is 53037: state code 53 for Washington plus county code 037. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $66,374.

Questions people ask

What is the population of Kittitas County, Washington?

The Census Vintage 2024 estimate for July 1, 2024 is 48,172. That is up 1,349 people (2.9%) from the July 2020 estimate of 46,823.

What is the FIPS code of Kittitas County?

53037. The first two digits (53) are Washington; the last three (037) identify the county.

What is the largest town in Kittitas County?

Ellensburg, with 20,996 residents inside Kittitas County in 2024.

Which counties border Kittitas County?

5 county-equivalents border it in the Census 2024 adjacency file: King County, WA; Yakima County, WA; Grant County, WA; Chelan County, WA; Douglas County, WA.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.