RANKING · 2020 CENSUS · 57 SHOWN OF 57

Highest British population share, California counties · 2020

California counties ranked by the share of all residents who are British ancestry (2023 American Community Survey). A concentration measure: British residents as a percentage of total population. This list covers the 57 counties in California that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

RANKPLACESTATEPOPBRITISH SHAREVS 2000

01Alpine County, CACA1,0431.8%–

02Marin County, CACA253,6941.6%–

03Inyo County, CACA18,1581.5%–

04Santa Cruz County, CACA258,8521.3%–

05El Dorado County, CACA192,3231.3%–

06Nevada County, CACA101,9111.1%–

07Tuolumne County, CACA53,1601.1%–

08Placer County, CACA442,0811.0%–

09Sonoma County, CACA486,4441.0%–

10Santa Barbara County, CACA442,0651.0%–

11Amador County, CACA41,8761.0%–

12Modoc County, CACA8,4261.0%–

13San Francisco County, CACA826,0790.9%–

14San Luis Obispo County, CACA282,3670.9%–

15Humboldt County, CACA131,6470.9%–

16Yuba County, CACA88,6910.8%–

17Napa County, CACA132,9490.8%–

18Shasta County, CACA181,6480.8%–

19San Mateo County, CACA743,5680.8%–

20Butte County, CACA209,2110.8%–

21Mariposa County, CACA16,9180.8%–

22Calaveras County, CACA46,6050.8%–

23Tehama County, CACA64,6650.8%–

24Contra Costa County, CACA1,170,0700.7%–

25San Diego County, CACA3,282,2480.7%–

26Alameda County, CACA1,636,6300.7%–

27Ventura County, CACA830,8510.7%–

28Santa Clara County, CACA1,914,3910.7%–

29Sutter County, CACA98,7870.6%–

30Mendocino County, CACA88,1220.6%–

31Orange County, CACA3,149,5070.6%–

32Siskiyou County, CACA42,0130.6%–

33Yolo County, CACA224,4100.6%–

34Solano County, CACA455,3760.6%–

35Sacramento County, CACA1,618,4600.5%–

36Colusa County, CACA21,8360.5%–

37Plumas County, CACA18,5830.5%–

38Riverside County, CACA2,544,9160.5%–

39Glenn County, CACA28,1410.4%–

40Los Angeles County, CACA9,694,9340.4%–

41Monterey County, CACA433,7290.4%–

42Madera County, CACA167,9270.4%–

43San Benito County, CACA70,0820.4%–

44Stanislaus County, CACA557,7190.3%–

45Lake County, CACA67,7720.3%–

46San Bernardino County, CACA2,224,0910.3%–

47Kern County, CACA927,0680.3%–

48Fresno County, CACA1,035,4560.3%–

49Tulare County, CACA485,1460.3%–

50Lassen County, CACA28,1170.3%–

51Del Norte County, CACA26,4100.3%–

52San Joaquin County, CACA823,8150.2%–

53Merced County, CACA297,2600.2%–

54Kings County, CACA154,3270.2%–

55Trinity County, CACA15,7200.1%–

56Imperial County, CACA181,4110.1%–

57Mono County, CACA12,5050.1%–

SHOWING 1–57 OF 57

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UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES