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RANKING · 2020 CENSUS · 58 SHOWN OF 58

Highest Scotch-Irish population share, California counties · 2020

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

Scotch-Irish Americans: full group profile →
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RELATEDLargest American populationHighest American population shareLargest Arab populationHighest Arab population shareLargest Egyptian populationHighest Egyptian population share
YEAR201020202024
Highest Scotch-Irish population share by state
All USAlaskaAlabamaArkansasArizonaCaliforniaColoradoFloridaGeorgiaIowaIdahoIllinoisIndianaKansasKentuckyLouisianaMassachusettsMarylandMaineMichiganMinnesotaMissouriMississippiMontanaNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew MexicoNevadaNew YorkOhioOklahomaOregonPennsylvaniaSouth CarolinaSouth DakotaTennesseeTexasUtahVirginiaVermontWashingtonWisconsinWest VirginiaWyoming
RANKPLACESTATEPOPSCOTCH-IRISH SHAREVS 2010
01Modoc County, CACA8,4262.4%+0.1 pts
02Sierra County, CACA3,0982.0%−3.1 pts
03Amador County, CACA41,8762.0%−1.0 pts
04Tuolumne County, CACA53,1601.9%−0.8 pts
05Mariposa County, CACA16,9181.8%−1.6 pts
06Del Norte County, CACA26,4101.7%−0.8 pts
07Plumas County, CACA18,5831.7%−1.2 pts
08Humboldt County, CACA131,6471.6%−1.2 pts
09San Benito County, CACA70,0821.5%+0.3 pts
10Glenn County, CACA28,1411.4%+0.4 pts
11El Dorado County, CACA192,3231.4%−1.1 pts
12Nevada County, CACA101,9111.4%−2.1 pts
13Calaveras County, CACA46,6051.4%−1.4 pts
14Siskiyou County, CACA42,0131.4%−1.4 pts
15Mendocino County, CACA88,1221.2%−1.1 pts
16Marin County, CACA253,6941.1%−1.2 pts
17Sonoma County, CACA486,4441.1%−1.2 pts
18Butte County, CACA209,2111.1%−1.8 pts
19Santa Cruz County, CACA258,8521.1%−0.8 pts
20Placer County, CACA442,0811.0%−1.0 pts
21Lake County, CACA67,7721.0%−1.7 pts
22San Luis Obispo County, CACA282,3671.0%−1.6 pts
23Shasta County, CACA181,6480.9%−1.6 pts
24Yolo County, CACA224,4100.9%−1.2 pts
25Tehama County, CACA64,6650.8%−1.1 pts
26Yuba County, CACA88,6910.8%−1.8 pts
27Santa Barbara County, CACA442,0650.8%−1.0 pts
28Napa County, CACA132,9490.8%−1.1 pts
29Trinity County, CACA15,7200.8%−3.8 pts
30Ventura County, CACA830,8510.7%−0.7 pts
31Sacramento County, CACA1,618,4600.7%−0.8 pts
32Contra Costa County, CACA1,170,0700.7%−0.9 pts
33Inyo County, CACA18,1580.7%−1.6 pts
34Lassen County, CACA28,1170.6%−0.9 pts
35San Diego County, CACA3,282,2480.6%−0.9 pts
36Solano County, CACA455,3760.6%−0.7 pts
37Madera County, CACA167,9270.6%−0.7 pts
38Riverside County, CACA2,544,9160.6%−0.6 pts
39Stanislaus County, CACA557,7190.5%−0.8 pts
40Orange County, CACA3,149,5070.5%−0.7 pts
41Kern County, CACA927,0680.5%−0.7 pts
42San Joaquin County, CACA823,8150.5%−0.5 pts
43Fresno County, CACA1,035,4560.5%−0.5 pts
44Alameda County, CACA1,636,6300.5%−0.7 pts
45Sutter County, CACA98,7870.5%−0.8 pts
46Colusa County, CACA21,8360.4%−0.7 pts
47Monterey County, CACA433,7290.4%−1.1 pts
48San Mateo County, CACA743,5680.4%−0.6 pts
49San Francisco County, CACA826,0790.4%−0.7 pts
50San Bernardino County, CACA2,224,0910.4%−0.6 pts
51Tulare County, CACA485,1460.4%−0.3 pts
52Santa Clara County, CACA1,914,3910.4%−0.6 pts
53Mono County, CACA12,5050.4%−3.1 pts
54Alpine County, CACA1,0430.3%−1.4 pts
55Los Angeles County, CACA9,694,9340.3%−0.4 pts
56Kings County, CACA154,3270.3%−0.9 pts
57Merced County, CACA297,2600.3%−0.4 pts
58Imperial County, CACA181,4110.1%−0.3 pts
SHOWING 1–58 OF 58
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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS