• county
  • FIPS 53035
  • Largest town: Bremerton

Kitsap County, Washington

Kitsap County had 281,420 residents in the Census Vintage 2024 estimate, on 395.1 square miles of land. It ranks 7th of 39 in Washington by population and 36th by land area.

Population
281,420
#7 of 39 in Washington · #259 in US
Area
395.1 sq mi
#36 of 39 in Washington · #2,548 in US
Density
712 / sq mi
#3 of 39 in Washington · #211 in US
Median household income
$98,894
#3 of 39 in Washington · #148 in US

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

Kitsap County within Washington. Pin: Olympia.

Measure from here

Tools and pages that start from Kitsap County

Kitsap County population, land area and income

Kitsap County had 281,420 residents in the Census Vintage 2024 estimate, on 395.1 square miles of land. It ranks 7th of 39 in Washington by population and 36th by land area. That works out to 712.3 people per square mile, 7.4 times the US average of 96.3, and in the top tenth nationally.

The median county-equivalent in Washington has 69,632 residents, so Kitsap County is 4.0 times that size.

Its SAIPE 2023 median household income of $98,894 is in the top tenth among 3,143 counties with an estimate.

National rank among 3,144

Population

281,420

3144th1st

259th of 3,144 (US)

Land area

395 sq mi

3144th1st

2548th of 3,144 (US)

Density

712.3 / sq mi

3144th1st

211th of 3,144 (US)

Median household income

$98,894

3143rd1st

148th of 3,143 (US)

Rank within Washington (39)

Population

281,420

39th1st

7th of 39 (WA)

Land area

395 sq mi

39th1st

36th of 39 (WA)

Density

712.3 / sq mi

39th1st

3rd of 39 (WA)

Median household income

$98,894

39th1st

3rd of 39 (WA)

How Kitsap County's population changed since 2020

Kitsap County gained 5,588 residents between the July 2020 and July 2024 estimates, a rise of 2.0%. That ranks 31st 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, Kitsap County recorded 12,093 births and 10,655 deaths, a natural change of +1,438. Net international migration added +2,426 and net domestic migration, people moving to or from other US counties, came to +1,888. The largest single component was international migration, which added 2,426 people.

275.8k2020276.6k2021277.9k2022277.7k2023281.4k2024
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
12,093
Deaths
10,655
Net international migration
+2,426
Net domestic migration
+1,888
Change, July 2023 to July 2024
+3,770

Where Kitsap County is

The Census internal point of Kitsap County is at 47.639700, -122.649600. 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 Kitsap 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: Kitsap County internal point. Dark pin: Olympia.

Internal point

Decimal
47.639700, -122.649600
DMS
47°38'22.92"N 122°38'58.56"W
UTM
10N 526319.7E 5276315.1N
Geohash
c22z10933
Plus code
84VVJ9Q2+V5

Towns in Kitsap County

4 incorporated places of 1,000+ people have residents in Kitsap County, 101,593 people together, or 36% of the county. Each figure counts only the part of the town inside Kitsap County; towns marked "part" extend into another county. The largest is Bremerton with 45,291.

  1. 01Bremerton45,291
  2. 02Bainbridge Island24,618
  3. 03Port Orchard19,122
  4. 04Poulsbo12,562
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Kitsap County

The Census 2024 county adjacency file lists 6 neighbors for Kitsap 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 43.3 miles SSW of Kitsap County's internal point in a straight line. The nearest place of 100,000 or more is Seattle, WA (population 780,995), 14.0 miles away. The nearest place of 10,000 or more is Bainbridge Island, WA (population 24,618), 6.6 miles away.

Kitsap County FIPS code

The FIPS code of Kitsap County is 53035: state code 53 for Washington plus county code 035. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $98,894.

Questions people ask

What is the population of Kitsap County, Washington?

The Census Vintage 2024 estimate for July 1, 2024 is 281,420. That is up 5,588 people (2.0%) from the July 2020 estimate of 275,832.

What is the FIPS code of Kitsap County?

53035. The first two digits (53) are Washington; the last three (035) identify the county.

What is the largest town in Kitsap County?

Bremerton, with 45,291 residents inside Kitsap County in 2024.

Which counties border Kitsap County?

6 county-equivalents border it in the Census 2024 adjacency file: King County, WA; Pierce County, WA; Snohomish County, WA; Island County, WA; Mason County, WA; Jefferson 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.