RANKING · 2024 ACS · 44 SHOWN OF 44

Highest Welsh population share, Idaho counties

Idaho counties ranked by the share of all residents who are Welsh ancestry (2024 American Community Survey). A concentration measure: Welsh 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 1.1%. Biggest climber in the top 100 since 2020: Power County, ID, up 29 places to #11.

Welsh Americans: full group profile →

IdahoAll states All rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPWELSH SHAREVS 2010

01Oneida County, IDID5,08516.0%+0.8 pts

02▲26Caribou County, IDID7,2523.2%+1.2 pts

03▲6Madison County, IDID55,1722.3%−0.8 pts

04▲1Valley County, IDID12,8312.2%−1.3 pts

05▲2Bannock County, IDID91,5911.8%−0.6 pts

06▲2Jefferson County, IDID35,2971.8%+0.2 pts

07▲12Clearwater County, IDID9,1181.8%+0.9 pts

08▼2Bear Lake County, IDID6,7271.8%+0.2 pts

09▼5Franklin County, IDID15,8891.7%−0.9 pts

10▲10Bingham County, IDID51,1531.7%+0.2 pts

11▲29Power County, IDID8,2461.6%−0.7 pts

12▲19Shoshone County, IDID14,1301.6%−0.2 pts

13▼3Bonneville County, IDID135,7711.5%−0.3 pts

14▼11Butte County, IDID2,7831.5%−2.9 pts

15▲8Nez Perce County, IDID42,9051.4%−0.1 pts

16▲9Fremont County, IDID14,2081.4%−0.2 pts

17▼15Clark County, IDID7831.3%−0.8 pts

18▼5Cassia County, IDID26,3971.3%+0.3 pts

19▼2Ada County, IDID546,1411.3%−0.3 pts

20▲7Washington County, IDID11,5831.2%+0.4 pts

21▼9Kootenai County, IDID191,8641.1%+0.1 pts

22▲10Payette County, IDID27,8241.1%−0.1 pts

23▼2Twin Falls County, IDID97,5391.0%+0.4 pts

24▲17Lincoln County, IDID5,6031.0%+0.6 pts

25▲10Latah County, IDID41,8421.0%−1.2 pts

26▼11Lemhi County, IDID8,4740.9%−1.3 pts

27▲2Teton County, IDID13,2540.9%0.0 pts

28▼17Custer County, IDID4,6360.9%−1.6 pts

29▼15Boise County, IDID8,5450.9%−0.2 pts

30▼4Elmore County, IDID29,4650.8%+0.1 pts

31▲12Minidoka County, IDID22,9110.8%+0.2 pts

32▲2Idaho County, IDID17,8740.7%−0.2 pts

33▲3Canyon County, IDID275,1230.7%−0.4 pts

34▼12Adams County, IDID5,0130.7%−2.0 pts

35▼11Bonner County, IDID54,4200.6%+0.3 pts

36▲3Camas County, IDID1,3160.6%+0.3 pts

37▼21Lewis County, IDID3,7040.6%+0.3 pts

38▲4Gooding County, IDID16,4460.6%−0.8 pts

39▼9Gem County, IDID21,7730.6%−1.0 pts

40▼7Owyhee County, IDID12,6610.5%−0.6 pts

41▼3Blaine County, IDID25,5170.5%−0.7 pts

42▼24Jerome County, IDID26,3620.4%−0.6 pts

43▼6Benewah County, IDID10,5080.4%−0.4 pts

44Boundary County, IDID13,9970.2%−1.1 pts

SHOWING 1–44 OF 44

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