RANKING · 2010 CENSUS · 57 SHOWN OF 57

Highest Polish population share, California counties · 2010

California counties ranked by the share of all residents who are Polish ancestry (2023 American Community Survey). A concentration measure: Polish 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

RANKPLACESTATEPOPPOLISH SHAREVS 2000

01Mariposa County, CACA16,9183.5%–

02Marin County, CACA253,6942.5%–

03Ventura County, CACA830,8512.3%–

04Santa Cruz County, CACA258,8522.1%–

05Placer County, CACA442,0812.1%–

06San Diego County, CACA3,282,2482.1%–

07San Francisco County, CACA826,0792.0%–

08Mono County, CACA12,5052.0%–

09San Luis Obispo County, CACA282,3672.0%–

10Nevada County, CACA101,9112.0%–

11El Dorado County, CACA192,3231.9%–

12Trinity County, CACA15,7201.9%–

13Humboldt County, CACA131,6471.9%–

14Alpine County, CACA1,0431.9%–

15Orange County, CACA3,149,5071.8%–

16Yolo County, CACA224,4101.8%–

17Sonoma County, CACA486,4441.7%–

18Sierra County, CACA3,0981.7%–

19Santa Barbara County, CACA442,0651.7%–

20Tuolumne County, CACA53,1601.6%–

21Calaveras County, CACA46,6051.5%–

22San Mateo County, CACA743,5681.5%–

23Del Norte County, CACA26,4101.5%–

24Contra Costa County, CACA1,170,0701.5%–

25Shasta County, CACA181,6481.5%–

26Yuba County, CACA88,6911.4%–

27Riverside County, CACA2,544,9161.4%–

28Butte County, CACA209,2111.4%–

29Mendocino County, CACA88,1221.4%–

30Lassen County, CACA28,1171.3%–

31Napa County, CACA132,9491.3%–

32Alameda County, CACA1,636,6301.3%–

33Siskiyou County, CACA42,0131.3%–

34Sacramento County, CACA1,618,4601.3%–

35Inyo County, CACA18,1581.3%–

36Los Angeles County, CACA9,694,9341.3%–

37Santa Clara County, CACA1,914,3911.2%–

38Lake County, CACA67,7721.2%–

39Solano County, CACA455,3761.1%–

40Tehama County, CACA64,6651.1%–

41San Bernardino County, CACA2,224,0911.1%–

42Amador County, CACA41,8761.0%–

43San Benito County, CACA70,0821.0%–

44Monterey County, CACA433,7290.9%–

45Sutter County, CACA98,7870.9%–

46Plumas County, CACA18,5830.8%–

47Kings County, CACA154,3270.8%–

48Kern County, CACA927,0680.7%–

49Stanislaus County, CACA557,7190.7%–

50San Joaquin County, CACA823,8150.7%–

51Glenn County, CACA28,1410.7%–

52Madera County, CACA167,9270.5%–

53Fresno County, CACA1,035,4560.5%–

54Merced County, CACA297,2600.5%–

55Tulare County, CACA485,1460.4%–

56Imperial County, CACA181,4110.4%–

57Colusa County, CACA21,8360.1%–

SHOWING 1–57 OF 57

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