Data / Rankings / Population speaking Spanish at home / Counties in Colorado

Counties in Colorado by population speaking Spanish at home

Costilla County had the highest population speaking Spanish at home of 64 counties in 2021, at 34%. Mineral County had the lowest, at 0%. The median was 7.3% and the figure for Colorado was 11.1%. Source: the U.S. Census Bureau.

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Highest34Costilla County
Lowest0Mineral County
Median7.364 counties
Colorado11.1History

Map of counties, 2021

Adams County: 22.9 %Alamosa County: 22.4 %Arapahoe County: 12.2 %Archuleta County: 7.1 %Baca County: 4.1 %Bent County: 10.3 %Boulder County: 8 %Broomfield County: 5.6 %Chaffee County: 3.6 %Cheyenne County: 6.9 %Clear Creek County: 5.5 %Conejos County: 25 %Costilla County: 34 %Crowley County: 10.6 %Custer County: 1.6 %Delta County: 7.8 %Denver County: 17.9 %Dolores County: 9.9 %Douglas County: 3.4 %Eagle County: 21.6 %Elbert County: 3.2 %El Paso County: 7.2 %Fremont County: 4.6 %Garfield County: 23.7 %Gilpin County: 2 %Grand County: 5.9 %Gunnison County: 6 %Hinsdale County: 1.3 %Huerfano County: 5.4 %Jackson County: 4 %Jefferson County: 5.8 %Kiowa County: 1.8 %Kit Carson County: 12.2 %Lake County: 16.6 %La Plata County: 5.1 %Larimer County: 5.5 %Las Animas County: 11.3 %Lincoln County: 11.6 %Logan County: 7 %Mesa County: 4.9 %Mineral County: 0 %Moffat County: 10.6 %Montezuma County: 5.8 %Montrose County: 15.6 %Morgan County: 18.7 %Otero County: 13.1 %Ouray County: 4.2 %Park County: 1.6 %Phillips County: 26.8 %Pitkin County: 6 %Prowers County: 22.3 %Pueblo County: 10.2 %Rio Blanco County: 5.2 %Rio Grande County: 18.1 %Routt County: 4.1 %Saguache County: 21.8 %San Juan County: 17.1 %San Miguel County: 11.3 %Sedgwick County: 7.8 %Summit County: 7.3 %Teller County: 1.2 %Washington County: 4.2 %Weld County: 17.1 %Yuma County: 20.7 %
  • Under 4
  • 4 to 5.5
  • 5.5 to 7.3
  • 7.3 to 11
  • 11 to 18
  • 18 and over
%, 2021. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2021

Costilla County: 34 %Costilla County34Phillips County: 26.8 %Phillips County26.8Conejos County: 25 %Conejos County25Garfield County: 23.7 %Garfield County23.7Adams County: 22.9 %Adams County22.9Alamosa County: 22.4 %Alamosa County22.4Prowers County: 22.3 %Prowers County22.3Saguache County: 21.8 %Saguache County21.8Eagle County: 21.6 %Eagle County21.6Yuma County: 20.7 %Yuma County20.7Morgan County: 18.7 %Morgan County18.7Rio Grande County: 18.1 %Rio Grande County18.1Denver County: 17.9 %Denver County17.9San Juan County: 17.1 %San Juan County17.1Weld County: 17.1 %Weld County17.1Lake County: 16.6 %Lake County16.6Montrose County: 15.6 %Montrose County15.6Otero County: 13.1 %Otero County13.1Arapahoe County: 12.2 %Arapahoe County12.2Kit Carson County: 12.2 %Kit Carson County12.2Lincoln County: 11.6 %Lincoln County11.6Las Animas County: 11.3 %Las Animas County11.3San Miguel County: 11.3 %San Miguel County11.3Crowley County: 10.6 %Crowley County10.6Moffat County: 10.6 %Moffat County10.6Bent County: 10.3 %Bent County10.3Pueblo County: 10.2 %Pueblo County10.2Dolores County: 9.9 %Dolores County9.9Boulder County: 8 %Boulder County8Delta County: 7.8 %Delta County7.8Sedgwick County: 7.8 %Sedgwick County7.8Summit County: 7.3 %Summit County7.3El Paso County: 7.2 %El Paso County7.2Archuleta County: 7.1 %Archuleta County7.1Logan County: 7 %Logan County7Cheyenne County: 6.9 %Cheyenne County6.9Gunnison County: 6 %Gunnison County6Pitkin County: 6 %Pitkin County6Grand County: 5.9 %Grand County5.9Montezuma County: 5.8 %Montezuma County5.8Costilla County: 34 %Costilla County34Phillips County: 26.8 %Phillips County26.8Conejos County: 25 %Conejos County25Garfield County: 23.7 %Garfield County23.7Adams County: 22.9 %Adams County22.9Alamosa County: 22.4 %Alamosa County22.4Prowers County: 22.3 %Prowers County22.3Saguache County: 21.8 %Saguache County21.8Eagle County: 21.6 %Eagle County21.6Yuma County: 20.7 %Yuma County20.7Morgan County: 18.7 %Morgan County18.7Rio Grande County: 18.1 %Rio Grande County18.1Denver County: 17.9 %Denver County17.9San Juan County: 17.1 %San Juan County17.1Weld County: 17.1 %Weld County17.1Lake County: 16.6 %Lake County16.6Montrose County: 15.6 %Montrose County15.6Otero County: 13.1 %Otero County13.1Arapahoe County: 12.2 %Arapahoe County12.2Kit Carson County: 12.2 %Kit Carson County12.2Lincoln County: 11.6 %Lincoln County11.6Las Animas County: 11.3 %Las Animas County11.3San Miguel County: 11.3 %San Miguel County11.3Crowley County: 10.6 %Crowley County10.6Moffat County: 10.6 %Moffat County10.6Bent County: 10.3 %Bent County10.3Pueblo County: 10.2 %Pueblo County10.2Dolores County: 9.9 %Dolores County9.9Boulder County: 8 %Boulder County8Delta County: 7.8 %Delta County7.8Sedgwick County: 7.8 %Sedgwick County7.8Summit County: 7.3 %Summit County7.3El Paso County: 7.2 %El Paso County7.2Archuleta County: 7.1 %Archuleta County7.1Logan County: 7 %Logan County7Cheyenne County: 6.9 %Cheyenne County6.9Gunnison County: 6 %Gunnison County6Pitkin County: 6 %Pitkin County6Grand County: 5.9 %Grand County5.9Montezuma County: 5.8 %Montezuma County5.8
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Costilla County34
2Phillips County26.8
3Conejos County25
4Garfield County23.7
5Adams County22.9
6Alamosa County22.4
7Prowers County22.3
8Saguache County21.8
9Eagle County21.6
10Yuma County20.7
11Morgan County18.7
12Rio Grande County18.1
13Denver County17.9
14San Juan County17.1
15Weld County17.1
16Lake County16.6
17Montrose County15.6
18Otero County13.1
19Arapahoe County12.2
20Kit Carson County12.2
21Lincoln County11.6
22Las Animas County11.3
23San Miguel County11.3
24Crowley County10.6
25Moffat County10.6
26Bent County10.3
27Pueblo County10.2
28Dolores County9.9
29Boulder County8
30Delta County7.8
31Sedgwick County7.8
32Summit County7.3
33El Paso County7.2
34Archuleta County7.1
35Logan County7
36Cheyenne County6.9
37Gunnison County6
37Pitkin County6
39Grand County5.9
40Montezuma County5.8
41Jefferson County5.8
42Broomfield County5.6
43Larimer County5.5
44Clear Creek County5.5
45Huerfano County5.4
46Rio Blanco County5.2
47La Plata County5.1
48Mesa County4.9
49Fremont County4.6
50Ouray County4.2
51Washington County4.2
52Routt County4.1
53Baca County4.1
54Jackson County4
55Chaffee County3.6
56Douglas County3.4
57Elbert County3.2
58Gilpin County2
59Kiowa County1.8
60Park County1.6
61Custer County1.6
62Hinsdale County1.3
63Teller County1.2
64Mineral County0

Other periods

About this ranking

People aged 5 and over who speak Spanish 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 or Hispanic origin. Hispanic origin is hispanic_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 Spanish 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 Spanish at home, as a percentage of the population aged 5 and over, calculated with stored inputs (Counties in Colorado by population speaking Spanish 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 Spanish at home, as a percentage of the population aged 5 and over, calculated with stored inputs, Counties in Colorado by population speaking Spanish 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/spanish-spoken-at-home/colorado-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 Spanish at home, as a percentage of the population aged 5 and over, calculated with stored inputs. Counties in Colorado by population speaking Spanish 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/spanish-spoken-at-home/colorado-counties?period=2021.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table C16001: people aged 5 and over who speak Spanish at home, as a percentage of the population aged 5 and over, calculated with stored inputs, Counties in Colorado by population speaking Spanish 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/spanish-spoken-at-home/colorado-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_colorado_by_2021,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table C16001: people aged 5 and over who speak Spanish at home, as a percentage of the population aged 5 and over, calculated with stored inputs: Counties in Colorado by population speaking Spanish 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/spanish-spoken-at-home/colorado-counties?period=2021. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table C16001: people aged 5 and over who speak Spanish 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 Spanish at home, as a percentage of the population aged 5 and over, calculated with stored inputs: Counties in Colorado by population speaking Spanish 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/spanish-spoken-at-home/colorado-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/spanish-spoken-at-home/colorado-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 Spanish 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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Questions

Which county has the highest population speaking Spanish at home?

Costilla County, with 34% in 2021, according to the U.S. Census Bureau.

Which county has the lowest population speaking Spanish at home?

Mineral County, with 0% 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 Spanish at home, as a percentage of the population aged 5 and over, calculated with stored inputs. Retrieved 2026-10-12.

Population speaking Spanish at home: other rankings

Counties in Colorado: more rankings