Counties in California by net international migration rate, July to June, 2025
Santa Clara County had the highest net international migration rate, July to June of 58 counties in 2025, at 9.76 per 1,000 inhabitants. Colusa County had the lowest, at -2.1 per 1,000 inhabitants. The median was 0.87 per 1,000 inhabitants and the figure for California was 2.78 per 1,000 inhabitants. Source: the U.S. Census Bureau.
All counties, 2025
Full ranking
| Rank | Counties | 2025 | Change on 2024 |
|---|---|---|---|
| 1 | Santa Clara County Estimated | 9.76 | -7.12 pts |
| 2 | San Mateo County Estimated | 6.38 | -7.61 pts |
| 3 | Alameda County Estimated | 6.34 | -5.85 pts |
| 4 | Yolo County Estimated | 5.83 | -3.31 pts |
| 5 | San Francisco County Estimated | 5.67 | -5.52 pts |
| 6 | Sacramento County Estimated | 4.7 | -4.63 pts |
| 7 | Contra Costa County Estimated | 3.7 | -4.37 pts |
| 8 | San Joaquin County Estimated | 3.33 | -6.36 pts |
| 9 | Los Angeles County Estimated | 3.02 | -6.46 pts |
| 10 | Modoc County Estimated | 2.95 | -4.55 pts |
| 11 | Orange County Estimated | 2.9 | -4.51 pts |
| 12 | Marin County Estimated | 2.9 | -4.54 pts |
| 13 | Sutter County Estimated | 2.87 | -7.48 pts |
| 14 | Mariposa County Estimated | 2.13 | -2.01 pts |
| 15 | San Diego County Estimated | 1.87 | -3.51 pts |
| 16 | Lassen County Estimated | 1.8 | -1.03 pts |
| 17 | Solano County Estimated | 1.74 | -4.22 pts |
| 18 | Placer County Estimated | 1.71 | -2.08 pts |
| 19 | Butte County Estimated | 1.57 | -1.43 pts |
| 20 | Santa Barbara County Estimated | 1.55 | -4.47 pts |
| 21 | Kings County Estimated | 1.33 | -3.95 pts |
| 22 | Stanislaus County Estimated | 1.3 | -4.37 pts |
| 23 | Monterey County Estimated | 1.2 | -4.97 pts |
| 24 | Shasta County Estimated | 1.13 | -0.89 pts |
| 25 | Plumas County Estimated | 1.02 | -1.41 pts |
| 26 | Sonoma County Estimated | 0.98 | -3.57 pts |
| 27 | Alpine County Estimated | 0.94 | -3.62 pts |
| 28 | Mendocino County Estimated | 0.9 | -2.5 pts |
| 29 | Mono County Estimated | 0.87 | -1.53 pts |
| 30 | El Dorado County Estimated | 0.87 | -1.21 pts |
| 31 | Fresno County Estimated | 0.83 | -8.87 pts |
| 32 | Ventura County Estimated | 0.73 | -3.41 pts |
| 33 | Kern County Estimated | 0.68 | -4.82 pts |
| 34 | Inyo County Estimated | 0.6 | -0.76 pts |
| 35 | Glenn County Estimated | 0.6 | -4.64 pts |
| 36 | Amador County Estimated | 0.57 | -0.19 pts |
| 37 | San Bernardino County Estimated | 0.55 | -4.85 pts |
| 38 | Lake County Estimated | 0.53 | -2.28 pts |
| 39 | Yuba County Estimated | 0.5 | -2.4 pts |
| 40 | Merced County Estimated | 0.49 | -5.45 pts |
| 41 | Siskiyou County Estimated | 0.45 | -0.75 pts |
| 42 | Nevada County Estimated | 0.38 | -1.15 pts |
| 43 | Napa County Estimated | 0.35 | -3.97 pts |
| 44 | Riverside County Estimated | 0.32 | -4.67 pts |
| 45 | San Luis Obispo County Estimated | 0.3 | -2.12 pts |
| 46 | Santa Cruz County Estimated | 0.27 | -2.25 pts |
| 47 | Humboldt County Estimated | 0.27 | -0.75 pts |
| 48 | Tuolumne County Estimated | 0.17 | -0.64 pts |
| 49 | Calaveras County Estimated | 0.09 | -0.41 pts |
| 50 | Sierra County Estimated | 0 | -2.55 pts |
| 51 | Trinity County Estimated | -0.06 | -0.06 pts |
| 52 | Madera County Estimated | -0.2 | -5.47 pts |
| 53 | San Benito County Estimated | -0.29 | -3 pts |
| 54 | Tulare County Estimated | -0.43 | -4.75 pts |
| 55 | Tehama County Estimated | -0.54 | -3.34 pts |
| 56 | Del Norte County Estimated | -0.75 | -0.64 pts |
| 57 | Imperial County Estimated | -0.95 | -10.92 pts |
| 58 | Colusa County Estimated | -2.1 | -6.05 pts |
Other periods
About this ranking
Net international migration from July 1 of the previous year through June 30 of the reported year per 1,000 residents, using the average of the population estimates at the two July 1 endpoints.
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 rate per 1,000 residents, 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 rate per 1,000 residents, 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 California by net international migration rate, July to June, 2025) [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 rate per 1,000 residents, 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 California by net international migration rate, July to June, 2025. 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-rate-july-june/california-counties. Accessed 12 Oct. 2026.
Chicago (author-date)
U.S. Census Bureau. 2026. Population Estimates Program: net international migration rate per 1,000 residents, 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 California by net international migration rate, July to June, 2025. 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-rate-july-june/california-counties.
Harvard
U.S. Census Bureau (2026) Population Estimates Program: net international migration rate per 1,000 residents, 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 California by net international migration rate, July to June, 2025 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/net-international-migration-rate-july-june/california-counties (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_california_by_2025,
author = {{U.S. Census Bureau}},
title = {{Population Estimates Program: net international migration rate per 1,000 residents, 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 California by net international migration rate, July to June, 2025}},
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-rate-july-june/california-counties. Publisher attribution: U.S. Census Bureau. Population Estimates Program: net international migration rate per 1,000 residents, 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 rate per 1,000 residents, 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 California by net international migration rate, July to June, 2025
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-rate-july-june/california-counties
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/net-international-migration-rate-july-june/california-counties.
N1 - Publisher attribution: U.S. Census Bureau. Population Estimates Program: net international migration rate per 1,000 residents, 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 California by net international migration rate, July to June using official data, and cite the source.
rank_places {"indicator":"net_international_migration_rate_july_june","level":"province","within":"California","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=net_international_migration_rate_july_june&level=province&within=California&limit=10Questions
Which county has the highest net international migration rate, July to June?
Santa Clara County, with 9.76 per 1,000 inhabitants in 2025, according to the U.S. Census Bureau.
Which county has the lowest net international migration rate, July to June?
Colusa County, with -2.1 per 1,000 inhabitants in 2025.
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 rate per 1,000 residents, 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.