RANKING · 2020 CENSUS · 58 SHOWN OF 58

Highest Polish population share, California counties · 2020

California counties ranked by the share of all residents who are Polish ancestry (2020 American Community Survey). A concentration measure: Polish residents as a percentage of total population. This list covers the 58 counties in California that qualify, ranked against each other statewide.

Polish Americans: full group profile →

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SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPPOLISH SHAREVS 2010

01Mono County, CACA12,5055.2%+3.2 pts

02Sierra County, CACA3,0982.8%+1.1 pts

03Marin County, CACA253,6942.8%+0.2 pts

04Santa Cruz County, CACA258,8521.9%−0.3 pts

05San Francisco County, CACA826,0791.9%−0.2 pts

06Sonoma County, CACA486,4441.8%+0.1 pts

07Ventura County, CACA830,8511.8%−0.5 pts

08Inyo County, CACA18,1581.7%+0.4 pts

09San Luis Obispo County, CACA282,3671.7%−0.3 pts

10San Diego County, CACA3,282,2481.7%−0.3 pts

11El Dorado County, CACA192,3231.7%−0.2 pts

12Placer County, CACA442,0811.6%−0.4 pts

13Nevada County, CACA101,9111.6%−0.3 pts

14Shasta County, CACA181,6481.5%−0.0 pts

15Calaveras County, CACA46,6051.5%−0.1 pts

16Orange County, CACA3,149,5071.4%−0.4 pts

17San Mateo County, CACA743,5681.4%−0.1 pts

18Santa Barbara County, CACA442,0651.4%−0.3 pts

19Contra Costa County, CACA1,170,0701.4%−0.1 pts

20Tuolumne County, CACA53,1601.4%−0.2 pts

21Siskiyou County, CACA42,0131.4%+0.1 pts

22Amador County, CACA41,8761.4%+0.4 pts

23Mendocino County, CACA88,1221.3%−0.0 pts

24Napa County, CACA132,9491.3%−0.0 pts

25Humboldt County, CACA131,6471.3%−0.6 pts

26Yolo County, CACA224,4101.2%−0.5 pts

27Lassen County, CACA28,1171.2%−0.1 pts

28Butte County, CACA209,2111.2%−0.2 pts

29Sacramento County, CACA1,618,4601.1%−0.2 pts

30Alameda County, CACA1,636,6301.1%−0.2 pts

31Los Angeles County, CACA9,694,9341.1%−0.2 pts

32Santa Clara County, CACA1,914,3911.1%−0.1 pts

33Tehama County, CACA64,6651.1%−0.1 pts

34Lake County, CACA67,7721.0%−0.1 pts

35Riverside County, CACA2,544,9161.0%−0.4 pts

36Trinity County, CACA15,7201.0%−0.9 pts

37Del Norte County, CACA26,4100.9%−0.6 pts

38Mariposa County, CACA16,9180.9%−2.6 pts

39Modoc County, CACA8,4260.9%–

40Yuba County, CACA88,6910.9%−0.6 pts

41San Bernardino County, CACA2,224,0910.8%−0.3 pts

42Solano County, CACA455,3760.8%−0.3 pts

43Monterey County, CACA433,7290.8%−0.2 pts

44Glenn County, CACA28,1410.8%+0.1 pts

45Kern County, CACA927,0680.6%−0.2 pts

46Sutter County, CACA98,7870.6%−0.3 pts

47San Joaquin County, CACA823,8150.6%−0.2 pts

48San Benito County, CACA70,0820.5%−0.4 pts

49Stanislaus County, CACA557,7190.5%−0.2 pts

50Plumas County, CACA18,5830.5%−0.3 pts

51Merced County, CACA297,2600.5%+0.0 pts

52Colusa County, CACA21,8360.5%+0.3 pts

53Madera County, CACA167,9270.4%−0.1 pts

54Fresno County, CACA1,035,4560.4%−0.1 pts

55Kings County, CACA154,3270.3%−0.5 pts

56Tulare County, CACA485,1460.3%−0.1 pts

57Imperial County, CACA181,4110.2%−0.2 pts

58Alpine County, CACA1,0430.2%−1.7 pts

SHOWING 1–58 OF 58

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS