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RANKING · 2020 CENSUS · 43 SHOWN OF 43

Highest Scotch-Irish population share, Idaho counties · 2020

Idaho 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 43 counties in Idaho 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
01Boise County, IDID8,5452.3%+0.3 pts
02Bonner County, IDID54,4202.3%−1.2 pts
03Adams County, IDID5,0131.8%−2.5 pts
04Clearwater County, IDID9,1181.8%−1.7 pts
05Clark County, IDID7831.7%−0.5 pts
06Lewis County, IDID3,7041.5%−1.2 pts
07Boundary County, IDID13,9971.5%−2.5 pts
08Kootenai County, IDID191,8641.5%−1.4 pts
09Latah County, IDID41,8421.5%−1.6 pts
10Washington County, IDID11,5831.5%−0.7 pts
11Shoshone County, IDID14,1301.4%−1.2 pts
12Valley County, IDID12,8311.3%−2.0 pts
13Blaine County, IDID25,5171.2%−1.4 pts
14Idaho County, IDID17,8741.1%−1.7 pts
15Gem County, IDID21,7731.1%−1.6 pts
16Benewah County, IDID10,5081.1%−1.0 pts
17Bannock County, IDID91,5911.0%−0.9 pts
18Elmore County, IDID29,4651.0%−0.3 pts
19Lincoln County, IDID5,6031.0%−1.2 pts
20Minidoka County, IDID22,9110.9%−0.9 pts
21Bonneville County, IDID135,7710.9%−0.6 pts
22Custer County, IDID4,6360.9%−0.9 pts
23Payette County, IDID27,8240.9%−1.0 pts
24Jefferson County, IDID35,2970.9%+0.3 pts
25Ada County, IDID546,1410.9%−1.3 pts
26Nez Perce County, IDID42,9050.9%−1.6 pts
27Power County, IDID8,2460.9%+0.2 pts
28Butte County, IDID2,7830.8%−3.5 pts
29Madison County, IDID55,1720.8%−0.7 pts
30Teton County, IDID13,2540.8%−2.0 pts
31Canyon County, IDID275,1230.7%−0.9 pts
32Jerome County, IDID26,3620.7%−0.9 pts
33Fremont County, IDID14,2080.7%+0.0 pts
34Bear Lake County, IDID6,7270.6%−0.3 pts
35Twin Falls County, IDID97,5390.6%−0.6 pts
36Gooding County, IDID16,4460.5%−0.7 pts
37Owyhee County, IDID12,6610.5%−0.5 pts
38Caribou County, IDID7,2520.5%+0.2 pts
39Cassia County, IDID26,3970.5%−0.6 pts
40Franklin County, IDID15,8890.4%−1.0 pts
41Bingham County, IDID51,1530.4%−1.0 pts
42Camas County, IDID1,3160.4%−2.1 pts
43Lemhi County, IDID8,4740.2%−2.2 pts
SHOWING 1–43 OF 43
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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS