CensusEasy
RANKING · 2024 ACS · 58 SHOWN OF 58

Highest Irish population share, California counties

California counties ranked by the share of all residents who are Irish ancestry (2024 American Community Survey). A concentration measure: Irish residents as a percentage of total population. This list covers the 58 counties in California that qualify, ranked against each other statewide.

Irish Americans: full group profile →
CaliforniaAll statesAll rankings
SAME RANKING BYCitiesStatesMetros
RELATEDLargest American populationHighest American population shareLargest Arab populationHighest Arab population shareLargest Egyptian populationHighest Egyptian population share
YEAR201020202024
Highest Irish population share by state
All USAlaskaAlabamaArkansasArizonaCaliforniaColoradoFloridaGeorgiaIowaIdahoIllinoisIndianaKansasKentuckyLouisianaMassachusettsMarylandMaineMichiganMinnesotaMissouriMississippiMontanaNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew MexicoNevadaNew YorkOhioOklahomaOregonPennsylvaniaSouth CarolinaSouth DakotaTennesseeTexasUtahVirginiaVermontWashingtonWisconsinWest VirginiaWyoming
RANKPLACESTATEPOPIRISH SHAREVS 2010
01Mariposa County, CACA16,91817.6%−4.3 pts
02Calaveras County, CACA46,60517.2%+0.2 pts
03Tuolumne County, CACA53,16016.2%+0.1 pts
04Amador County, CACA41,87614.6%−4.0 pts
05Lake County, CACA67,77214.0%−4.0 pts
06Nevada County, CACA101,91113.5%−4.7 pts
07Marin County, CACA253,69413.2%−1.8 pts
08El Dorado County, CACA192,32312.8%−2.0 pts
09San Luis Obispo County, CACA282,36712.7%+0.3 pts
10Siskiyou County, CACA42,01312.5%−2.5 pts
11Sonoma County, CACA486,44412.2%−1.5 pts
12Sierra County, CACA3,09812.0%−0.7 pts
13Humboldt County, CACA131,64711.8%−1.6 pts
14Butte County, CACA209,21111.4%−2.8 pts
15Shasta County, CACA181,64811.4%−4.1 pts
16Alpine County, CACA1,04311.3%−3.3 pts
17Mono County, CACA12,50511.2%−1.6 pts
18Placer County, CACA442,08111.0%−4.6 pts
19Del Norte County, CACA26,41010.8%−4.5 pts
20Tehama County, CACA64,66510.8%−4.1 pts
21Modoc County, CACA8,42610.7%−7.2 pts
22Santa Cruz County, CACA258,85210.5%−1.2 pts
23Plumas County, CACA18,5839.7%−5.6 pts
24Mendocino County, CACA88,1229.6%−3.7 pts
25Trinity County, CACA15,7209.3%−13.6 pts
26Yolo County, CACA224,4108.5%−0.9 pts
27Napa County, CACA132,9498.3%−2.4 pts
28Lassen County, CACA28,1178.2%−6.2 pts
29Ventura County, CACA830,8517.8%−1.5 pts
30San Diego County, CACA3,282,2487.8%−1.6 pts
31San Francisco County, CACA826,0797.6%−0.5 pts
32Inyo County, CACA18,1587.5%−6.7 pts
33Contra Costa County, CACA1,170,0707.3%−2.5 pts
34Santa Barbara County, CACA442,0657.2%−2.1 pts
35Sacramento County, CACA1,618,4606.8%−2.8 pts
36San Mateo County, CACA743,5686.6%−2.0 pts
37Yuba County, CACA88,6916.6%−4.8 pts
38Sutter County, CACA98,7876.6%−3.1 pts
39San Benito County, CACA70,0826.4%−2.1 pts
40Solano County, CACA455,3766.3%−2.0 pts
41Orange County, CACA3,149,5076.0%−2.4 pts
42Stanislaus County, CACA557,7196.0%−2.9 pts
43Glenn County, CACA28,1415.8%−3.5 pts
44Alameda County, CACA1,636,6305.4%−1.1 pts
45Riverside County, CACA2,544,9165.3%−2.4 pts
46Colusa County, CACA21,8365.2%−2.4 pts
47Monterey County, CACA433,7295.0%−1.9 pts
48Madera County, CACA167,9274.9%−2.0 pts
49Kern County, CACA927,0684.8%−3.0 pts
50San Joaquin County, CACA823,8154.7%−2.2 pts
51Fresno County, CACA1,035,4564.6%−1.3 pts
52Santa Clara County, CACA1,914,3914.5%−1.5 pts
53San Bernardino County, CACA2,224,0914.4%−2.5 pts
54Kings County, CACA154,3274.2%−2.4 pts
55Tulare County, CACA485,1464.1%−0.7 pts
56Los Angeles County, CACA9,694,9343.8%−0.6 pts
57Merced County, CACA297,2603.3%−1.8 pts
58Imperial County, CACA181,4111.7%−0.9 pts
SHOWING 1–58 OF 58
Download CSV (full list, 58 rows)

UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES