RANKING · 2010 CENSUS · 58 SHOWN OF 58

Largest Scotch-Irish population, California counties · 2010

California counties ranked by the number of residents who are Scotch-Irish ancestry, from the 2023 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 58 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

RANKPLACESTATEPOPSCOTCH-IRISH POPULATIONVS 2000

01Los Angeles County, CACA9,694,93466,233–

02San Diego County, CACA3,282,24846,116–

03Orange County, CACA3,149,50736,929–

04Riverside County, CACA2,544,91625,005–

05Sacramento County, CACA1,618,46021,377–

06San Bernardino County, CACA2,224,09120,035–

07Alameda County, CACA1,636,63016,795–

08Santa Clara County, CACA1,914,39116,315–

09Contra Costa County, CACA1,170,07015,795–

10Ventura County, CACA830,85112,033–

11Sonoma County, CACA486,44411,108–

12Kern County, CACA927,0689,938–

13Fresno County, CACA1,035,4569,106–

14San Francisco County, CACA826,0798,480–

15San Mateo County, CACA743,5687,378–

16Santa Barbara County, CACA442,0657,268–

17San Joaquin County, CACA823,8156,866–

18San Luis Obispo County, CACA282,3676,839–

19Stanislaus County, CACA557,7196,770–

20Placer County, CACA442,0816,747–

21Butte County, CACA209,2116,323–

22Monterey County, CACA433,7296,053–

23Marin County, CACA253,6945,711–

24Solano County, CACA455,3765,248–

25Santa Cruz County, CACA258,8524,963–

26El Dorado County, CACA192,3234,490–

27Shasta County, CACA181,6484,460–

28Yolo County, CACA224,4104,094–

29Humboldt County, CACA131,6473,744–

30Nevada County, CACA101,9113,499–

31Tulare County, CACA485,1462,842–

32Napa County, CACA132,9492,512–

33Mendocino County, CACA88,1221,956–

34Madera County, CACA167,9271,848–

35Yuba County, CACA88,6911,846–

36Kings County, CACA154,3271,745–

37Merced County, CACA297,2601,731–

38Lake County, CACA67,7721,706–

39Tuolumne County, CACA53,1601,544–

40Calaveras County, CACA46,6051,307–

41Siskiyou County, CACA42,0131,254–

42Tehama County, CACA64,6651,182–

43Sutter County, CACA98,7871,167–

44Amador County, CACA41,8761,142–

45Imperial County, CACA181,411737–

46Del Norte County, CACA26,410705–

47San Benito County, CACA70,082650–

48Trinity County, CACA15,720630–

49Mariposa County, CACA16,918615–

50Plumas County, CACA18,583587–

51Lassen County, CACA28,117532–

52Mono County, CACA12,505486–

53Inyo County, CACA18,158416–

54Glenn County, CACA28,141301–

55Colusa County, CACA21,836239–

56Modoc County, CACA8,426221–

57Sierra County, CACA3,098171–

58Alpine County, CACA1,04320–

SHOWING 1–58 OF 58

Download CSV (full list, 58 rows)

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