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RANKING · 2020 CENSUS · 44 SHOWN OF 44

Highest Irish population share, Idaho counties · 2020

Idaho counties ranked by the share of all residents who are Irish ancestry (2020 American Community Survey). A concentration measure: Irish residents as a percentage of total population. This list covers the 44 counties in Idaho that qualify, ranked against each other statewide. The median across all 44 is 8.1%.

Irish Americans: full group profile →
SAME RANKING BYCitiesStatesMetros
Highest Irish population share by state
All USAlaskaAlabamaArkansasArizonaCaliforniaColoradoFloridaGeorgiaIowaIdahoIllinoisIndianaKansasKentuckyLouisianaMassachusettsMarylandMaineMichiganMinnesotaMissouriMississippiMontanaNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew MexicoNevadaNew YorkOhioOklahomaOregonPennsylvaniaSouth CarolinaSouth DakotaTennesseeTexasUtahVirginiaVermontWashingtonWisconsinWest VirginiaWyoming
RANKPLACESTATEPOPIRISH SHAREVS 2010
01Valley County, IDID12,83114.8%+2.0 pts
02Shoshone County, IDID14,13014.5%−3.1 pts
03Adams County, IDID5,01313.9%−0.8 pts
04Bonner County, IDID54,42013.8%−1.4 pts
05Clearwater County, IDID9,11813.6%−4.1 pts
06Kootenai County, IDID191,86412.4%−2.8 pts
07Custer County, IDID4,63612.4%−7.0 pts
08Washington County, IDID11,58312.2%−2.6 pts
09Benewah County, IDID10,50812.2%−5.4 pts
10Latah County, IDID41,84212.1%−3.2 pts
11Idaho County, IDID17,87411.8%−4.8 pts
12Lewis County, IDID3,70411.2%−5.3 pts
13Lemhi County, IDID8,47411.1%−1.9 pts
14Ada County, IDID546,14110.7%−1.1 pts
15Boise County, IDID8,5459.8%−1.1 pts
16Elmore County, IDID29,4659.8%−2.6 pts
17Teton County, IDID13,2549.5%−3.5 pts
18Gem County, IDID21,7739.2%−3.1 pts
19Bannock County, IDID91,5918.3%−1.0 pts
20Nez Perce County, IDID42,9058.3%−6.2 pts
21Payette County, IDID27,8248.3%−2.2 pts
22Gooding County, IDID16,4468.1%−3.2 pts
23Boundary County, IDID13,9977.9%−3.2 pts
24Twin Falls County, IDID97,5397.8%−3.0 pts
25Fremont County, IDID14,2087.7%+0.2 pts
26Canyon County, IDID275,1237.7%−1.1 pts
27Owyhee County, IDID12,6617.1%−2.3 pts
28Jerome County, IDID26,3626.9%−0.1 pts
29Blaine County, IDID25,5176.4%−5.0 pts
30Power County, IDID8,2466.3%+1.8 pts
31Bonneville County, IDID135,7716.3%−1.6 pts
32Clark County, IDID7836.0%+3.7 pts
33Butte County, IDID2,7835.6%−3.4 pts
34Jefferson County, IDID35,2975.5%+0.2 pts
35Lincoln County, IDID5,6035.4%−1.5 pts
36Minidoka County, IDID22,9115.3%−1.2 pts
37Bear Lake County, IDID6,7275.1%+0.8 pts
38Camas County, IDID1,3164.8%−4.0 pts
39Bingham County, IDID51,1534.4%−0.6 pts
40Madison County, IDID55,1724.4%−1.0 pts
41Cassia County, IDID26,3974.2%−1.0 pts
42Caribou County, IDID7,2523.5%−1.5 pts
43Oneida County, IDID5,0853.5%−0.9 pts
44Franklin County, IDID15,8893.1%−0.2 pts
SHOWING 1–44 OF 44

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS