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RANKING · 2024 ACS · 58 SHOWN OF 58

Highest American population share, California counties

California counties ranked by the share of all residents who are American ancestry (2024 American Community Survey). A concentration measure: American residents as a percentage of total population. This list covers the 58 counties in California that qualify, ranked against each other statewide. The median across all 58 is 2.6%. Biggest climber in the top 100 since 2020: Sierra County, CA, up 46 places to #12.

American ancestry: full group profile →
SAME RANKING BYCitiesStatesMetros
Highest American population share by state
All USAlaskaAlabamaArkansasArizonaCaliforniaColoradoFloridaGeorgiaIowaIdahoIllinoisIndianaKansasKentuckyLouisianaMassachusettsMarylandMaineMichiganMinnesotaMissouriMississippiMontanaNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew MexicoNevadaNew YorkOhioOklahomaOregonPennsylvaniaSouth CarolinaSouth DakotaTennesseeTexasUtahVirginiaVermontWashingtonWisconsinWest VirginiaWyoming
RANKPLACESTATEPOPAMERICAN SHAREVS 2010
01Trinity County, CACA15,72020.7%+18.1 pts
02Tehama County, CACA64,6659.3%+2.9 pts
03▲3Glenn County, CACA28,1417.4%+2.6 pts
04Shasta County, CACA181,6486.5%−1.3 pts
05▲4Modoc County, CACA8,4266.3%+3.7 pts
06▲38Alpine County, CACA1,0436.1%+4.9 pts
07▲23Del Norte County, CACA26,4105.3%−0.2 pts
08▼5Butte County, CACA209,2115.0%−2.4 pts
09▲1Inyo County, CACA18,1584.9%+0.9 pts
10▲40Colusa County, CACA21,8364.5%−0.4 pts
11▼4Orange County, CACA3,149,5074.5%+1.7 pts
12▲46Sierra County, CACA3,0984.5%+0.9 pts
13▼2Lake County, CACA67,7724.1%+0.6 pts
14▲4Mono County, CACA12,5053.8%+1.5 pts
15▲9Amador County, CACA41,8763.5%−0.5 pts
16▼2Kern County, CACA927,0683.5%+0.7 pts
17▲5Nevada County, CACA101,9113.3%−0.9 pts
18▼13Ventura County, CACA830,8513.3%−0.9 pts
19▲1Los Angeles County, CACA9,694,9343.1%+1.0 pts
20▼8El Dorado County, CACA192,3233.1%−1.1 pts
21▼8Placer County, CACA442,0813.1%−0.6 pts
22▲1Yuba County, CACA88,6913.1%−4.9 pts
23▼15Siskiyou County, CACA42,0133.1%−0.9 pts
24▲14San Mateo County, CACA743,5682.8%+1.3 pts
25▲2Lassen County, CACA28,1172.8%−1.0 pts
26▼10Plumas County, CACA18,5832.7%−0.7 pts
27▲1Riverside County, CACA2,544,9162.7%+0.1 pts
28▲11San Bernardino County, CACA2,224,0912.6%0.0 pts
29▲6Calaveras County, CACA46,6052.6%−2.5 pts
30▲6Sonoma County, CACA486,4442.5%−0.3 pts
31▼5Mariposa County, CACA16,9182.5%−0.8 pts
32▼1San Diego County, CACA3,282,2482.5%0.0 pts
33▲8Sacramento County, CACA1,618,4602.4%+0.1 pts
34▲9Solano County, CACA455,3762.4%+0.2 pts
35▼14Napa County, CACA132,9492.4%−0.3 pts
36▼17Humboldt County, CACA131,6472.3%−1.2 pts
37▲3Santa Barbara County, CACA442,0652.3%−0.2 pts
38▼1Marin County, CACA253,6942.3%+0.1 pts
39▼24San Luis Obispo County, CACA282,3672.2%−1.4 pts
40▲7Yolo County, CACA224,4102.2%+0.2 pts
41▼24Sutter County, CACA98,7872.2%−3.7 pts
42▼8Contra Costa County, CACA1,170,0702.2%−0.2 pts
43▼18Stanislaus County, CACA557,7192.1%−1.1 pts
44▼15Tuolumne County, CACA53,1602.1%−2.1 pts
45▲9Kings County, CACA154,3272.0%−0.8 pts
46▼13San Francisco County, CACA826,0792.0%+1.0 pts
47▲5San Benito County, CACA70,0822.0%−0.3 pts
48▼16Santa Cruz County, CACA258,8521.9%−0.6 pts
49▼1Tulare County, CACA485,1461.8%−0.8 pts
50▼4Alameda County, CACA1,636,6301.8%+0.5 pts
51San Joaquin County, CACA823,8151.8%−0.5 pts
52▲1Merced County, CACA297,2601.7%−0.6 pts
53▼11Madera County, CACA167,9271.7%−0.2 pts
54▼5Santa Clara County, CACA1,914,3911.7%+0.2 pts
55▲1Fresno County, CACA1,035,4561.6%0.0 pts
56▼1Monterey County, CACA433,7291.5%0.0 pts
57Imperial County, CACA181,4111.5%+0.2 pts
58▼13Mendocino County, CACA88,1221.4%−2.1 pts
SHOWING 1–58 OF 58

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES