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 2021, at 3.52 per 1,000 inhabitants. San Benito County had the lowest, at -0.18 per 1,000 inhabitants. The median was 0.35 per 1,000 inhabitants and the figure for California was 1.12 per 1,000 inhabitants. Source: the U.S. Census Bureau.

Highest3.52Santa Clara County

Lowest-0.18San Benito County

Median0.3558 counties

California1.12History

All counties, 2021

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

Rank	Counties	2021 per 1,000 inhabitants	Change on 2020
1	Santa Clara County Estimated	3.52	-0.12 pts
2	Alameda County Estimated	2.55	-0.12 pts
3	San Francisco County Estimated	2.41	-0.01 pts
4	Yolo County Estimated	2.37	+0.4 pts
5	San Mateo County Estimated	2.28	+0.08 pts
6	Sacramento County Estimated	1.53	+0.5 pts
7	Marin County Estimated	1.49	+0.5 pts
8	Contra Costa County Estimated	1.44	+0.12 pts
9	Mono County Estimated	1.44	-0.84 pts
10	Los Angeles County Estimated	1.22	+0.46 pts
11	Orange County Estimated	1.21	+0.47 pts
12	Santa Barbara County Estimated	0.99	+0.63 pts
13	Sutter County Estimated	0.92	+0.6 pts
14	San Joaquin County Estimated	0.86	+0.51 pts
15	San Diego County Estimated	0.83	+0.09 pts
16	Solano County Estimated	0.7	+0.48 pts
17	Stanislaus County Estimated	0.58	+0.69 pts
18	Monterey County Estimated	0.57	+1.17 pts
19	Fresno County Estimated	0.55	+0.51 pts
20	Placer County Estimated	0.53	+0.41 pts
21	Shasta County Estimated	0.52	-0.05 pts
22	Mendocino County Estimated	0.51	+0.79 pts
23	Sonoma County Estimated	0.47	+0.58 pts
24	El Dorado County Estimated	0.45	+0.23 pts
25	Merced County Estimated	0.41	+1.14 pts
26	Del Norte County Estimated	0.4	-0.17 pts
27	Kern County Estimated	0.35	+0.71 pts
28	Santa Cruz County Estimated	0.35	+0.45 pts
29	Glenn County Estimated	0.35	+1.23 pts
30	Modoc County Estimated	0.35	+0.57 pts
31	Ventura County Estimated	0.31	+0.69 pts
32	Butte County Estimated	0.31	+0.21 pts
33	Imperial County Estimated	0.3	+0.72 pts
34	Napa County Estimated	0.3	+0.51 pts
35	Humboldt County Estimated	0.29	+0.2 pts
36	Mariposa County Estimated	0.29	-0.12 pts
37	San Bernardino County Estimated	0.28	+0.53 pts
38	San Luis Obispo County Estimated	0.27	+0.45 pts
39	Colusa County Estimated	0.27	+1.9 pts
40	Yuba County Estimated	0.27	+0.25 pts
41	Riverside County Estimated	0.26	+0.58 pts
42	Lake County Estimated	0.2	+0.56 pts
43	Amador County Estimated	0.2	-0.08 pts
44	Calaveras County Estimated	0.17	+0.11 pts
45	Siskiyou County Estimated	0.16	+0.04 pts
46	Tuolumne County Estimated	0.13	-0.11 pts
47	Lassen County Estimated	0.12	+0.06 pts
48	Inyo County Estimated	0.11	-0.12 pts
49	Plumas County Estimated	0.1	+0.05 pts
50	Tulare County Estimated	0.1	+0.72 pts
51	Nevada County Estimated	0.02	+0.06 pts
52	Kings County Estimated	0.01	+0.62 pts
53	Alpine County Estimated	0	0 pts
53	Sierra County Estimated	0	0 pts
55	Trinity County Estimated	-0.12	-0.37 pts
56	Madera County Estimated	-0.16	+1.01 pts
57	Tehama County Estimated	-0.17	+0.3 pts
58	San Benito County Estimated	-0.18	+0.57 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, 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 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, 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-rate-july-june/california-counties?period=2021. 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, 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-rate-july-june/california-counties?period=2021.

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, 2021 [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=2021 (Accessed: 12 October 2026).

BibTeX

@misc{census_counties_in_california_by_2021,
  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, 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-rate-july-june/california-counties?period=2021. 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, 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-rate-july-june/california-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/net-international-migration-rate-july-june/california-counties?period=2021.
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 3.52 per 1,000 inhabitants in 2021, according to the U.S. Census Bureau.

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

San Benito County, with -0.18 per 1,000 inhabitants 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 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.