Data / Rankings / Net international migration rate, July to June / Counties in California

Counties in California by net international migration rate, July to June

Santa Clara County had the highest net international migration rate, July to June of 58 counties in 2020, at 3.63 per 1,000 inhabitants. Colusa County had the lowest, at -1.63 per 1,000 inhabitants. The median was 0.07 per 1,000 inhabitants and the figure for California was 0.73 per 1,000 inhabitants. Source: the U.S. Census Bureau.

Highest3.63Santa Clara County
Lowest-1.63Colusa County
Median0.0758 counties
California0.73History

All counties, 2020

Santa Clara County: 3.63 per 1,000 inhabitantsSanta Clara County3.63Alameda County: 2.66 per 1,000 inhabitantsAlameda County2.66San Francisco County: 2.43 per 1,000 inhabitantsSan Francisco County2.43Mono County: 2.28 per 1,000 inhabitantsMono County2.28San Mateo County: 2.2 per 1,000 inhabitantsSan Mateo County2.2Yolo County: 1.98 per 1,000 inhabitantsYolo County1.98Contra Costa County: 1.31 per 1,000 inhabitantsContra Costa County1.31Sacramento County: 1.03 per 1,000 inhabitantsSacramento County1.03Marin County: 0.99 per 1,000 inhabitantsMarin County0.99Los Angeles County: 0.76 per 1,000 inhabitantsLos Angeles County0.76San Diego County: 0.74 per 1,000 inhabitantsSan Diego County0.74Orange County: 0.74 per 1,000 inhabitantsOrange County0.74Del Norte County: 0.57 per 1,000 inhabitantsDel Norte County0.57Shasta County: 0.57 per 1,000 inhabitantsShasta County0.57Mariposa County: 0.41 per 1,000 inhabitantsMariposa County0.41Santa Barbara County: 0.36 per 1,000 inhabitantsSanta Barbara County0.36San Joaquin County: 0.35 per 1,000 inhabitantsSan Joaquin County0.35Sutter County: 0.32 per 1,000 inhabitantsSutter County0.32Amador County: 0.28 per 1,000 inhabitantsAmador County0.28Trinity County: 0.24 per 1,000 inhabitantsTrinity County0.24Tuolumne County: 0.24 per 1,000 inhabitantsTuolumne County0.24Solano County: 0.23 per 1,000 inhabitantsSolano County0.23Inyo County: 0.22 per 1,000 inhabitantsInyo County0.22El Dorado County: 0.21 per 1,000 inhabitantsEl Dorado County0.21Placer County: 0.13 per 1,000 inhabitantsPlacer County0.13Siskiyou County: 0.12 per 1,000 inhabitantsSiskiyou County0.12Humboldt County: 0.1 per 1,000 inhabitantsHumboldt County0.1Butte County: 0.09 per 1,000 inhabitantsButte County0.09Lassen County: 0.07 per 1,000 inhabitantsLassen County0.07Calaveras County: 0.06 per 1,000 inhabitantsCalaveras County0.06Plumas County: 0.05 per 1,000 inhabitantsPlumas County0.05Fresno County: 0.04 per 1,000 inhabitantsFresno County0.04Yuba County: 0.01 per 1,000 inhabitantsYuba County0.01Alpine County: 0 per 1,000 inhabitantsAlpine County0Sierra County: 0 per 1,000 inhabitantsSierra County0Nevada County: -0.04 per 1,000 inhabitantsNevada County-0.04Santa Cruz County: -0.1 per 1,000 inhabitantsSanta Cruz County-0.1Stanislaus County: -0.11 per 1,000 inhabitantsStanislaus County-0.11Sonoma County: -0.11 per 1,000 inhabitantsSonoma County-0.11San Luis Obispo County: -0.18 per 1,000 inhabitantsSan Luis Obispo County-0.18Napa County: -0.21 per 1,000 inhabitantsNapa County-0.21Modoc County: -0.23 per 1,000 inhabitantsModoc County-0.23San Bernardino County: -0.25 per 1,000 inhabitantsSan Bernardino County-0.25Mendocino County: -0.28 per 1,000 inhabitantsMendocino County-0.28Riverside County: -0.32 per 1,000 inhabitantsRiverside County-0.32Kern County: -0.35 per 1,000 inhabitantsKern County-0.35Lake County: -0.36 per 1,000 inhabitantsLake County-0.36Ventura County: -0.38 per 1,000 inhabitantsVentura County-0.38Imperial County: -0.42 per 1,000 inhabitantsImperial County-0.42Tehama County: -0.46 per 1,000 inhabitantsTehama County-0.46Monterey County: -0.6 per 1,000 inhabitantsMonterey County-0.6Kings County: -0.62 per 1,000 inhabitantsKings County-0.62Tulare County: -0.62 per 1,000 inhabitantsTulare County-0.62Merced County: -0.74 per 1,000 inhabitantsMerced County-0.74San Benito County: -0.76 per 1,000 inhabitantsSan Benito County-0.76Glenn County: -0.88 per 1,000 inhabitantsGlenn County-0.88Madera County: -1.17 per 1,000 inhabitantsMadera County-1.17Colusa County: -1.63 per 1,000 inhabitantsColusa County-1.63
per 1,000 inhabitants. Source: 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.

Full ranking

RankCounties2020
per 1,000 inhabitants		Change on 2019
1Santa Clara County Estimated3.63-0.88 pts
2Alameda County Estimated2.66-0.66 pts
3San Francisco County Estimated2.43-0.63 pts
4Mono County Estimated2.28-0.43 pts
5San Mateo County Estimated2.2-0.59 pts
6Yolo County Estimated1.98-0.52 pts
7Contra Costa County Estimated1.31-0.32 pts
8Sacramento County Estimated1.03-0.24 pts
9Marin County Estimated0.99-0.25 pts
10Los Angeles County Estimated0.76-0.13 pts
11San Diego County Estimated0.74-0.09 pts
12Orange County Estimated0.74-0.13 pts
13Del Norte County Estimated0.57-0.04 pts
14Shasta County Estimated0.57-0.09 pts
15Mariposa County Estimated0.41+0.06 pts
16Santa Barbara County Estimated0.36+0.05 pts
17San Joaquin County Estimated0.35-0.03 pts
18Sutter County Estimated0.32+0.08 pts
19Amador County Estimated0.28-0.08 pts
20Trinity County Estimated0.24+0.16 pts
21Tuolumne County Estimated0.24-0 pts
22Solano County Estimated0.23+0.03 pts
23Inyo County Estimated0.22-0 pts
24El Dorado County Estimated0.21-0.02 pts
25Placer County Estimated0.13+0.01 pts
26Siskiyou County Estimated0.12+0.12 pts
27Humboldt County Estimated0.1+0.04 pts
28Butte County Estimated0.09-0.05 pts
29Lassen County Estimated0.07-0.13 pts
30Calaveras County Estimated0.06-0 pts
31Plumas County Estimated0.05-0 pts
32Fresno County Estimated0.04+0.1 pts
33Yuba County Estimated0.01+0.13 pts
34Alpine County Estimated00 pts
34Sierra County Estimated0+0.34 pts
36Nevada County Estimated-0.04+0.06 pts
37Santa Cruz County Estimated-0.1+0.15 pts
38Stanislaus County Estimated-0.11+0.11 pts
39Sonoma County Estimated-0.11+0.12 pts
40San Luis Obispo County Estimated-0.18+0.19 pts
41Napa County Estimated-0.21+0.3 pts
42Modoc County Estimated-0.23+0.23 pts
43San Bernardino County Estimated-0.25+0.15 pts
44Mendocino County Estimated-0.28+0.16 pts
45Riverside County Estimated-0.32+0.18 pts
46Kern County Estimated-0.35+0.2 pts
47Lake County Estimated-0.36+0.16 pts
48Ventura County Estimated-0.38+0.15 pts
49Imperial County Estimated-0.42+0.31 pts
50Tehama County Estimated-0.46+0.28 pts
51Monterey County Estimated-0.6+0.35 pts
52Kings County Estimated-0.62+0.23 pts
53Tulare County Estimated-0.62+0.34 pts
54Merced County Estimated-0.74+0.35 pts
55San Benito County Estimated-0.76+0.53 pts
56Glenn County Estimated-0.88+0.75 pts
57Madera County Estimated-1.17+0.43 pts
58Colusa County Estimated-1.63+0.66 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

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

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, 2020) [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, 2020. 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?period=2020. 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, 2020. 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?period=2020.

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, 2020 [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?period=2020 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_california_by_2020,
  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, 2020}},
  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?period=2020. 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, 2020
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?period=2020
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/net-international-migration-rate-july-june/california-counties?period=2020.
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  -
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Questions

Which county has the highest net international migration rate, July to June?

Santa Clara County, with 3.63 per 1,000 inhabitants in 2020, according to the U.S. Census Bureau.

Which county has the lowest net international migration rate, July to June?

Colusa County, with -1.63 per 1,000 inhabitants in 2020.

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.

Net international migration rate, July to June: other rankings

Counties in California: more rankings