RANKING · 2020 CENSUS · 57 SHOWN OF 57

Largest British population, California counties · 2020

California counties ranked by the number of residents who are British ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 57 counties in California that qualify, ranked against each other statewide.

British Americans: full group profile →

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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 POPULATIONVS 2010

01Los Angeles County, CACA9,694,93442,899+45%

02San Diego County, CACA3,282,24823,249+49%

03Orange County, CACA3,149,50719,375+18%

04Santa Clara County, CACA1,914,39112,537+33%

05Alameda County, CACA1,636,63011,488+46%

06Riverside County, CACA2,544,91611,239+76%

07Sacramento County, CACA1,618,4608,306+58%

08Contra Costa County, CACA1,170,0708,294+41%

09San Francisco County, CACA826,0798,120+34%

10San Bernardino County, CACA2,224,0917,011+52%

11San Mateo County, CACA743,5686,157+55%

12Ventura County, CACA830,8515,528+16%

13Sonoma County, CACA486,4444,948+56%

14Santa Barbara County, CACA442,0654,305+63%

15Marin County, CACA253,6944,185+33%

16Placer County, CACA442,0814,101+104%

17Santa Cruz County, CACA258,8523,674+67%

18Fresno County, CACA1,035,4563,137+108%

19Kern County, CACA927,0682,885+60%

20San Luis Obispo County, CACA282,3672,488+10%

21Solano County, CACA455,3762,484+75%

22El Dorado County, CACA192,3232,469+77%

23Stanislaus County, CACA557,7191,861+98%

24Monterey County, CACA433,7291,783+37%

25San Joaquin County, CACA823,8151,761+5%

26Butte County, CACA209,2111,753+73%

27Shasta County, CACA181,6481,468+76%

28Tulare County, CACA485,1461,396+256%

29Yolo County, CACA224,4101,241+43%

30Humboldt County, CACA131,6471,190+70%

31Napa County, CACA132,9491,154+61%

32Nevada County, CACA101,9111,090+64%

33Yuba County, CACA88,691658+294%

34Sutter County, CACA98,787625+238%

35Madera County, CACA167,927604+82%

36Merced County, CACA297,260578+64%

37Tuolumne County, CACA53,160578+261%

38Mendocino County, CACA88,122536+33%

39Tehama County, CACA64,665488+155%

40Amador County, CACA41,876376+70%

41Calaveras County, CACA46,605356+65%

42Inyo County, CACA18,158276+151%

43Kings County, CACA154,327259−18%

44Siskiyou County, CACA42,013255+59%

45San Benito County, CACA70,082224+7%

46Lake County, CACA67,772218−11%

47Imperial County, CACA181,411155−30%

48Mariposa County, CACA16,918135−9%

49Glenn County, CACA28,141126+0%

50Colusa County, CACA21,836111+2675%

51Plumas County, CACA18,58393−38%

52Lassen County, CACA28,11791+3%

53Modoc County, CACA8,42685+35%

54Del Norte County, CACA26,41074−33%

55Alpine County, CACA1,04321–

56Trinity County, CACA15,72018−50%

57Mono County, CACA12,5058−73%

SHOWING 1–57 OF 57

Download CSV (full list, 57 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS