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RANKING · 2020 CENSUS · 44 SHOWN OF 44

Highest American population share, Idaho counties · 2020

Idaho counties ranked by the share of all residents who are American ancestry (2020 American Community Survey). A concentration measure: American residents as a percentage of total population. This list covers the 44 counties in Idaho that qualify, ranked against each other statewide.

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
01Boundary County, IDID13,99714.9%+7.5 pts
02Clark County, IDID78313.4%+6.9 pts
03Gem County, IDID21,77310.8%−4.9 pts
04Minidoka County, IDID22,91110.3%+0.1 pts
05Jefferson County, IDID35,29710.2%+1.9 pts
06Jerome County, IDID26,36210.1%+1.3 pts
07Twin Falls County, IDID97,5399.7%+2.8 pts
08Franklin County, IDID15,8899.7%+1.7 pts
09Bonneville County, IDID135,7719.3%−0.5 pts
10Caribou County, IDID7,2529.2%+4.8 pts
11Cassia County, IDID26,3979.1%−1.5 pts
12Bingham County, IDID51,1538.4%+2.5 pts
13Idaho County, IDID17,8748.0%+5.0 pts
14Butte County, IDID2,7837.6%−3.0 pts
15Oneida County, IDID5,0857.6%−5.3 pts
16Power County, IDID8,2467.5%+0.3 pts
17Adams County, IDID5,0137.1%+2.2 pts
18Fremont County, IDID14,2086.8%+0.8 pts
19Lincoln County, IDID5,6036.7%+0.6 pts
20Elmore County, IDID29,4656.6%−2.4 pts
21Washington County, IDID11,5836.5%−3.1 pts
22Bonner County, IDID54,4206.4%+1.5 pts
23Bannock County, IDID91,5916.3%−0.7 pts
24Lemhi County, IDID8,4746.2%−3.7 pts
25Clearwater County, IDID9,1186.2%−0.5 pts
26Camas County, IDID1,3165.9%−14.3 pts
27Nez Perce County, IDID42,9055.8%−1.8 pts
28Madison County, IDID55,1725.8%+0.1 pts
29Payette County, IDID27,8245.6%−13.3 pts
30Bear Lake County, IDID6,7275.6%−2.4 pts
31Owyhee County, IDID12,6615.5%−14.1 pts
32Lewis County, IDID3,7045.5%+2.5 pts
33Canyon County, IDID275,1235.5%−13.3 pts
34Gooding County, IDID16,4465.3%−0.3 pts
35Boise County, IDID8,5455.1%−3.5 pts
36Benewah County, IDID10,5085.0%+1.6 pts
37Valley County, IDID12,8314.9%−2.7 pts
38Latah County, IDID41,8424.8%+1.8 pts
39Ada County, IDID546,1414.5%−4.1 pts
40Custer County, IDID4,6364.5%+1.7 pts
41Shoshone County, IDID14,1304.3%−0.1 pts
42Kootenai County, IDID191,8644.3%−8.3 pts
43Teton County, IDID13,2543.5%−0.6 pts
44Blaine County, IDID25,5172.6%−5.3 pts
SHOWING 1–44 OF 44

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