Counties in Washington by net international migration, July to June
King County had the highest net international migration, July to June of 39 counties in 2021, at 8,661. Wahkiakum County had the lowest, at 1. The median was 42 and the figure for Washington was 13,990. Source: the U.S. Census Bureau.
Map of counties, 2021
- Under 20
- 20 to 40
- 40 to 90
- 90 to 200
- 200 and over
All counties, 2021
Full ranking
| Rank | Counties | 2021 | Change on 2020 |
|---|---|---|---|
| 1 | King County Estimated | 8,661 | -27.5% |
| 2 | Snohomish County Estimated | 1,491 | -17.4% |
| 3 | Pierce County Estimated | 865 | -6.5% |
| 4 | Clark County Estimated | 448 | +62.9% |
| 5 | Yakima County Estimated | 395 | -13.2% |
| 6 | Spokane County Estimated | 274 | +37.7% |
| 7 | Whatcom County Estimated | 208 | -28% |
| 8 | Thurston County Estimated | 195 | +14.7% |
| 9 | Benton County Estimated | 191 | -12.4% |
| 10 | Franklin County Estimated | 178 | -14.8% |
| 11 | Whitman County Estimated | 162 | -41.1% |
| 12 | Skagit County Estimated | 124 | -57.2% |
| 13 | Kitsap County Estimated | 98 | +10.1% |
| 14 | Grant County Estimated | 79 | -75.5% |
| 15 | Walla Walla County Estimated | 75 | -8.5% |
| 16 | Douglas County Estimated | 73 | -8.8% |
| 17 | Mason County Estimated | 67 | -40.2% |
| 17 | Okanogan County Estimated | 67 | -40.2% |
| 19 | Adams County Estimated | 48 | -34.2% |
| 20 | Clallam County Estimated | 42 | -42.5% |
| 21 | Cowlitz County Estimated | 39 | +333.3% |
| 22 | Lewis County Estimated | 32 | -49.2% |
| 23 | Klickitat County Estimated | 31 | +210% |
| 24 | Pacific County Estimated | 25 | -57.6% |
| 25 | Chelan County Estimated | 24 | +300% |
| 26 | Island County Estimated | 20 | -66.1% |
| 26 | Jefferson County Estimated | 20 | +122.2% |
| 28 | Kittitas County Estimated | 18 | -51.4% |
| 29 | Grays Harbor County Estimated | 11 | |
| 30 | San Juan County Estimated | 8 | -63.6% |
| 31 | Skamania County Estimated | 6 | -53.8% |
| 32 | Asotin County Estimated | 5 | +200% |
| 33 | Stevens County Estimated | 3 | +50% |
| 34 | Pend Oreille County Estimated | 2 | +100% |
| 35 | Columbia County Estimated | 1 | -92.9% |
| 35 | Ferry County Estimated | 1 | 0% |
| 35 | Garfield County Estimated | 1 | -66.7% |
| 35 | Lincoln County Estimated | 1 | 0% |
| 35 | Wahkiakum County Estimated | 1 |
Other periods
About this ranking
Estimated moves into the area from abroad minus moves out of the area to other countries, from July 1 of the previous year through June 30 of the reported year.
More on how it is measured
- United States: Census Bureau estimates, including people born in the United States and abroad, moves between the states and Puerto Rico, and net movement of the Armed Forces overseas.
- Canada: Statistics Canada immigrants, minus net emigration, plus the net change in non-permanent residents.
- Australia: ABS net overseas migration for the financial year.
- United Kingdom local authorities: Office for National Statistics mid-year estimates, counting people who move for at least 12 months.
A component of each country's official population estimates. Methods differ between the statistical offices, so compare places within a country first. Differs from the World Bank net_migration series, which uses calendar years and a different method.
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. Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.Citation styles
APA 7
U.S. Census Bureau. (2026). Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021 (Counties in Washington by net international migration, July to June, 2021) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html
MLA 9
Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021, Counties in Washington by net international migration, July to June, 2021. U.S. Census Bureau, 26 Mar. 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/net-international-migration-july-june/washington-counties?period=2021. Accessed 12 Oct. 2026.
Chicago (author-date)
U.S. Census Bureau. 2026. Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Counties in Washington by net international migration, July to June, 2021. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/net-international-migration-july-june/washington-counties?period=2021.
Harvard
U.S. Census Bureau (2026) Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021, Counties in Washington by net international migration, July to June, 2021 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/net-international-migration-july-june/washington-counties?period=2021 (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_washington_by_2021,
author = {{U.S. Census Bureau}},
title = {{Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021: Counties in Washington by net international migration, July to June, 2021}},
year = {2026},
howpublished = {Data set},
url = {https://www.census.gov/programs-surveys/popest/data/data-sets.html},
urldate = {2026-10-12},
note = {Accessed via Invokely, https://invokely.ai/rankings/net-international-migration-july-june/washington-counties?period=2021. Publisher attribution: U.S. Census Bureau. Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.},
}
RIS
TY - DATA
AU - U.S. Census Bureau
TI - Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021: Counties in Washington by net international migration, July to June, 2021
PY - 2026
DA - 2026/03/26
PB - U.S. Census Bureau
DB - Invokely
UR - https://www.census.gov/programs-surveys/popest/data/data-sets.html
L2 - https://invokely.ai/rankings/net-international-migration-july-june/washington-counties?period=2021
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/net-international-migration-july-june/washington-counties?period=2021.
N1 - Publisher attribution: U.S. Census Bureau. Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
ER -
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 net international migration, July to June using official data, and cite the source.
rank_places {"indicator":"net_international_migration_july_june","level":"province","within":"Washington","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=net_international_migration_july_june&level=province&within=Washington&limit=10Questions
Which county has the highest net international migration, July to June?
King County, with 8,661 in 2021, according to the U.S. Census Bureau.
Which county has the lowest net international migration, July to June?
Wahkiakum County, with 1 in 2021.
Where does this ranking come from?
Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program: net international migration, July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Retrieved 2026-10-12.