Data / Rankings / Population speaking a language other than English at home / Counties in Idaho

Counties in Idaho by population speaking a language other than English at home

Clark County had the highest population speaking a language other than English at home of 44 counties in 2021, at 38.4%. Lemhi County had the lowest, at 2.3%. The median was 7.9% and the figure for Idaho was 10.8%. Source: the U.S. Census Bureau.

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Highest38.4Clark County
Lowest2.3Lemhi County
Median7.944 counties
Idaho10.8History

Map of counties, 2021

Ada County: 8.7 %Adams County: 2.6 %Bannock County: 5.5 %Bear Lake County: 4.5 %Benewah County: 4.5 %Bingham County: 14 %Blaine County: 22.9 %Boise County: 5.3 %Bonner County: 2.3 %Bonneville County: 9.8 %Boundary County: 4.9 %Butte County: 7.9 %Camas County: 5.3 %Canyon County: 19.1 %Caribou County: 4.8 %Cassia County: 19.5 %Clark County: 38.4 %Clearwater County: 4 %Custer County: 3.9 %Elmore County: 14 %Franklin County: 5.2 %Fremont County: 12.4 %Gem County: 7.9 %Gooding County: 25.8 %Idaho County: 5 %Jefferson County: 11.3 %Jerome County: 32.8 %Kootenai County: 3.5 %Latah County: 5.8 %Lemhi County: 2.3 %Lewis County: 6.2 %Lincoln County: 27.1 %Madison County: 10.4 %Minidoka County: 26.7 %Nez Perce County: 3.9 %Oneida County: 6.2 %Owyhee County: 22.6 %Payette County: 12.6 %Power County: 27.1 %Shoshone County: 3.1 %Teton County: 13.8 %Twin Falls County: 15.1 %Valley County: 3.7 %Washington County: 14.3 %
  • Under 3.9
  • 3.9 to 5.3
  • 5.3 to 7.9
  • 7.9 to 13
  • 13 to 22
  • 22 and over
%, 2021. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2021

Clark County: 38.4 %Clark County38.4Jerome County: 32.8 %Jerome County32.8Power County: 27.1 %Power County27.1Lincoln County: 27.1 %Lincoln County27.1Minidoka County: 26.7 %Minidoka County26.7Gooding County: 25.8 %Gooding County25.8Blaine County: 22.9 %Blaine County22.9Owyhee County: 22.6 %Owyhee County22.6Cassia County: 19.5 %Cassia County19.5Canyon County: 19.1 %Canyon County19.1Twin Falls County: 15.1 %Twin Falls County15.1Washington County: 14.3 %Washington County14.3Bingham County: 14 %Bingham County14Elmore County: 14 %Elmore County14Teton County: 13.8 %Teton County13.8Payette County: 12.6 %Payette County12.6Fremont County: 12.4 %Fremont County12.4Jefferson County: 11.3 %Jefferson County11.3Madison County: 10.4 %Madison County10.4Bonneville County: 9.8 %Bonneville County9.8Ada County: 8.7 %Ada County8.7Butte County: 7.9 %Butte County7.9Gem County: 7.9 %Gem County7.9Lewis County: 6.2 %Lewis County6.2Oneida County: 6.2 %Oneida County6.2Latah County: 5.8 %Latah County5.8Bannock County: 5.5 %Bannock County5.5Camas County: 5.3 %Camas County5.3Boise County: 5.3 %Boise County5.3Franklin County: 5.2 %Franklin County5.2Idaho County: 5 %Idaho County5Boundary County: 4.9 %Boundary County4.9Caribou County: 4.8 %Caribou County4.8Benewah County: 4.5 %Benewah County4.5Bear Lake County: 4.5 %Bear Lake County4.5Clearwater County: 4 %Clearwater County4Custer County: 3.9 %Custer County3.9Nez Perce County: 3.9 %Nez Perce County3.9Valley County: 3.7 %Valley County3.7Kootenai County: 3.5 %Kootenai County3.5Shoshone County: 3.1 %Shoshone County3.1Adams County: 2.6 %Adams County2.6Bonner County: 2.3 %Bonner County2.3Lemhi County: 2.3 %Lemhi County2.3Clark County: 38.4 %Clark County38.4Jerome County: 32.8 %Jerome County32.8Power County: 27.1 %Power County27.1Lincoln County: 27.1 %Lincoln County27.1Minidoka County: 26.7 %Minidoka County26.7Gooding County: 25.8 %Gooding County25.8Blaine County: 22.9 %Blaine County22.9Owyhee County: 22.6 %Owyhee County22.6Cassia County: 19.5 %Cassia County19.5Canyon County: 19.1 %Canyon County19.1Twin Falls County: 15.1 %Twin Falls County15.1Washington County: 14.3 %Washington County14.3Bingham County: 14 %Bingham County14Elmore County: 14 %Elmore County14Teton County: 13.8 %Teton County13.8Payette County: 12.6 %Payette County12.6Fremont County: 12.4 %Fremont County12.4Jefferson County: 11.3 %Jefferson County11.3Madison County: 10.4 %Madison County10.4Bonneville County: 9.8 %Bonneville County9.8Ada County: 8.7 %Ada County8.7Butte County: 7.9 %Butte County7.9Gem County: 7.9 %Gem County7.9Lewis County: 6.2 %Lewis County6.2Oneida County: 6.2 %Oneida County6.2Latah County: 5.8 %Latah County5.8Bannock County: 5.5 %Bannock County5.5Camas County: 5.3 %Camas County5.3Boise County: 5.3 %Boise County5.3Franklin County: 5.2 %Franklin County5.2Idaho County: 5 %Idaho County5Boundary County: 4.9 %Boundary County4.9Caribou County: 4.8 %Caribou County4.8Benewah County: 4.5 %Benewah County4.5Bear Lake County: 4.5 %Bear Lake County4.5Clearwater County: 4 %Clearwater County4Custer County: 3.9 %Custer County3.9Nez Perce County: 3.9 %Nez Perce County3.9Valley County: 3.7 %Valley County3.7Kootenai County: 3.5 %Kootenai County3.5Shoshone County: 3.1 %Shoshone County3.1Adams County: 2.6 %Adams County2.6Bonner County: 2.3 %Bonner County2.3Lemhi County: 2.3 %Lemhi County2.3
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Clark County38.4
2Jerome County32.8
3Power County27.1
4Lincoln County27.1
5Minidoka County26.7
6Gooding County25.8
7Blaine County22.9
8Owyhee County22.6
9Cassia County19.5
10Canyon County19.1
11Twin Falls County15.1
12Washington County14.3
13Bingham County14
14Elmore County14
15Teton County13.8
16Payette County12.6
17Fremont County12.4
18Jefferson County11.3
19Madison County10.4
20Bonneville County9.8
21Ada County8.7
22Butte County7.9
23Gem County7.9
24Lewis County6.2
25Oneida County6.2
26Latah County5.8
27Bannock County5.5
28Camas County5.3
29Boise County5.3
30Franklin County5.2
31Idaho County5
32Boundary County4.9
33Caribou County4.8
34Benewah County4.5
35Bear Lake County4.5
36Clearwater County4
37Custer County3.9
38Nez Perce County3.9
39Valley County3.7
40Kootenai County3.5
41Shoshone County3.1
42Adams County2.6
43Bonner County2.3
44Lemhi County2.3

Other periods

About this ranking

People aged 5 and over who speak a language other than English at home, as a percentage of all people aged 5 and over. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

Measures the language used at home, not English ability: most people in this group also speak English. Spanish speakers are shown separately in spanish_at_home_share.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table C16001: people aged 5 and over who speak a language other than English at home, as a percentage of the population aged 5 and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-c16001.dat. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). American Community Survey 5-year estimates, table C16001: people aged 5 and over who speak a language other than English at home, as a percentage of the population aged 5 and over, calculated with stored inputs (Counties in Idaho by population speaking a language other than English at home, 2021) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-c16001.dat

MLA 9

American Community Survey 5-year estimates, table C16001: people aged 5 and over who speak a language other than English at home, as a percentage of the population aged 5 and over, calculated with stored inputs, Counties in Idaho by population speaking a language other than English at home, 2021. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-c16001.dat. Invokely, https://invokely.ai/rankings/language-other-than-english-at-home/idaho-counties?period=2021. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table C16001: people aged 5 and over who speak a language other than English at home, as a percentage of the population aged 5 and over, calculated with stored inputs. Counties in Idaho by population speaking a language other than English at home, 2021. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-c16001.dat. Also distributed by Invokely, https://invokely.ai/rankings/language-other-than-english-at-home/idaho-counties?period=2021.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table C16001: people aged 5 and over who speak a language other than English at home, as a percentage of the population aged 5 and over, calculated with stored inputs, Counties in Idaho by population speaking a language other than English at home, 2021 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-c16001.dat, via Invokely: https://invokely.ai/rankings/language-other-than-english-at-home/idaho-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_idaho_by_2021,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table C16001: people aged 5 and over who speak a language other than English at home, as a percentage of the population aged 5 and over, calculated with stored inputs: Counties in Idaho by population speaking a language other than English at home, 2021}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-c16001.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/language-other-than-english-at-home/idaho-counties?period=2021. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table C16001: people aged 5 and over who speak a language other than English at home, as a percentage of the population aged 5 and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2021/table-based-SF/data/5YRData/acsdt5y2021-c16001.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table C16001: people aged 5 and over who speak a language other than English at home, as a percentage of the population aged 5 and over, calculated with stored inputs: Counties in Idaho by population speaking a language other than English at home, 2021
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-c16001.dat
L2  - https://invokely.ai/rankings/language-other-than-english-at-home/idaho-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/language-other-than-english-at-home/idaho-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table C16001: people aged 5 and over who speak a language other than English at home, as a percentage of the population aged 5 and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-c16001.dat. Retrieved 2026-10-12.
ER  -
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rank_places {"indicator":"language_other_than_english_share","level":"province","within":"Idaho","limit":10}
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Questions

Which county has the highest population speaking a language other than English at home?

Clark County, with 38.4% in 2021, according to the U.S. Census Bureau.

Which county has the lowest population speaking a language other than English at home?

Lemhi County, with 2.3% in 2021.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table C16001: people aged 5 and over who speak a language other than English at home, as a percentage of the population aged 5 and over, calculated with stored inputs. Retrieved 2026-10-12.

Population speaking a language other than English at home: other rankings

Counties in Idaho: more rankings