Data / Rankings / Foreign-born population share / Counties in Washington

Counties in Washington by foreign-born share of the population

King County had the highest foreign-born share of the population of 39 counties in 2023, at 25.1%. Garfield County had the lowest, at 1.6%. The median was 7.3% and the figure for Washington was 15.1%. Source: the U.S. Census Bureau.

Highest25.1King County
Lowest1.6Garfield County
Median7.339 counties
Washington15.1History

All counties, 2023

CSVChart (SVG)

King CountyKing County: 25.1 %25.1Adams CountyAdams County: 23.1 %23.1Franklin CountyFranklin County: 21.7 %21.7Yakima CountyYakima County: 18.5 %18.5Snohomish CountySnohomish County: 18.5 %18.5Douglas CountyDouglas County: 16.6 %16.6Grant CountyGrant County: 16.2 %16.2Chelan CountyChelan County: 14.2 %14.2Okanogan CountyOkanogan County: 12.4 %12.4Benton CountyBenton County: 11.3 %11.3Clark CountyClark County: 11 %11Pierce CountyPierce County: 10.5 %10.5Whatcom CountyWhatcom County: 9.9 %9.9Walla Walla CountyWalla Walla County: 9.7 %9.7Klickitat CountyKlickitat County: 9.7 %9.7Skagit CountySkagit County: 9.3 %9.3Thurston CountyThurston County: 8.5 %8.5Whitman CountyWhitman County: 8 %8Island CountyIsland County: 7.5 %7.5San Juan CountySan Juan County: 7.3 %7.3Mason CountyMason County: 6.8 %6.8Kitsap CountyKitsap County: 6.8 %6.8Pacific CountyPacific County: 6 %6Spokane CountySpokane County: 5.4 %5.4Jefferson CountyJefferson County: 5.3 %5.3Lewis CountyLewis County: 5.3 %5.3Grays Harbor CountyGrays Harbor County: 5.2 %5.2Clallam CountyClallam County: 4.5 %4.5Skamania CountySkamania County: 4.5 %4.5Wahkiakum CountyWahkiakum County: 4.5 %4.5Cowlitz CountyCowlitz County: 4.1 %4.1Kittitas CountyKittitas County: 3.9 %3.9Columbia CountyColumbia County: 3 %3Asotin CountyAsotin County: 2.5 %2.5Ferry CountyFerry County: 2.3 %2.3Lincoln CountyLincoln County: 2.2 %2.2Pend Oreille CountyPend Oreille County: 2 %2Stevens CountyStevens County: 2 %2Garfield CountyGarfield County: 1.6 %1.6
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2023 (%)Change on 2022
1King County25.1+0.6 pts
2Adams County23.1+0.2 pts
3Franklin County21.7-0.5 pts
4Yakima County18.5-0.2 pts
5Snohomish County18.5+0.8 pts
6Douglas County16.6+1.2 pts
7Grant County16.2-0.3 pts
8Chelan County14.2+0.2 pts
9Okanogan County12.4+0.1 pts
10Benton County11.3-0.3 pts
11Clark County11+0.2 pts
12Pierce County10.5+0.1 pts
13Whatcom County9.90 pts
14Walla Walla County9.7-0.3 pts
15Klickitat County9.7-0.4 pts
16Skagit County9.3-0.1 pts
17Thurston County8.5+0.1 pts
18Whitman County8-1.5 pts
19Island County7.5-0 pts
20San Juan County7.3-0.3 pts
21Mason County6.8+0.4 pts
22Kitsap County6.80 pts
23Pacific County6-1.2 pts
24Spokane County5.4+0.2 pts
25Jefferson County5.3+0.7 pts
26Lewis County5.3+0.2 pts
27Grays Harbor County5.2+0.4 pts
28Clallam County4.5-0.5 pts
29Skamania County4.5+0.6 pts
30Wahkiakum County4.5+0.1 pts
31Cowlitz County4.1-0 pts
32Kittitas County3.9+0.5 pts
33Columbia County3-0.6 pts
34Asotin County2.5-0.7 pts
35Ferry County2.30 pts
36Lincoln County2.2+0.1 pts
37Pend Oreille County2+0.4 pts
38Stevens County2-0.2 pts
39Garfield County1.6+0.2 pts

Other periods

About this ranking

People who were not US citizens at birth, as a percentage of the total population. Includes naturalized citizens, lawful permanent residents, temporary migrants and unauthorized immigrants. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

Based on place of birth, not nationality: a naturalized citizen counts as foreign born, and people born in Puerto Rico, the US island areas or abroad to American parents count as native. Not comparable with foreign_population_share, which counts foreign nationals in Spain and the EU. Calculated from counts in ACS table B05002, which are stored as inputs.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B05002: foreign-born population as a percentage of the total population, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b05002.dat. Retrieved 2026-10-09.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in Washington by foreign-born share of the population using official data, and cite the source.
rank_places {"indicator":"foreign_born_share","level":"province","within":"Washington","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=foreign_born_share&level=province&within=Washington&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

Which county has the highest foreign-born share of the population?

King County, with 25.1% in 2023, according to the U.S. Census Bureau.

Which county has the lowest foreign-born share of the population?

Garfield County, with 1.6% in 2023.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B05002: foreign-born population as a percentage of the total population, calculated with stored inputs. Retrieved 2026-10-09.

Foreign-born population share: other rankings

Counties in Washington: more rankings