Data / Rankings / Foreign-born population share / Counties in New Mexico

Counties in New Mexico by foreign-born share of the population

Lea County had the highest foreign-born share of the population of 33 counties in 2021, at 17.5%. De Baca County had the lowest, at 0.3%. The median was 5.4% and the figure for New Mexico was 9.2%. Source: the U.S. Census Bureau.

Highest17.5Lea County
Lowest0.3De Baca County
Median5.433 counties
New Mexico9.2History

All counties, 2021

CSVChart (SVG)

Lea CountyLea County: 17.5 %17.5Luna CountyLuna County: 17 %17Doña Ana CountyDoña Ana County: 16 %16Santa Fe CountySanta Fe County: 12 %12Chaves CountyChaves County: 11.3 %11.3Roosevelt CountyRoosevelt County: 10.6 %10.6Bernalillo CountyBernalillo County: 10.2 %10.2Otero CountyOtero County: 9.8 %9.8Los Alamos CountyLos Alamos County: 8.9 %8.9Curry CountyCurry County: 8.7 %8.7Hidalgo CountyHidalgo County: 7.3 %7.3Valencia CountyValencia County: 6.7 %6.7Harding CountyHarding County: 6.6 %6.6Eddy CountyEddy County: 6.2 %6.2Torrance CountyTorrance County: 5.6 %5.6Taos CountyTaos County: 5.6 %5.6Lincoln CountyLincoln County: 5.4 %5.4Socorro CountySocorro County: 5.1 %5.1Sandoval CountySandoval County: 4.9 %4.9Rio Arriba CountyRio Arriba County: 4.8 %4.8Sierra CountySierra County: 4.5 %4.5Union CountyUnion County: 4 %4Guadalupe CountyGuadalupe County: 3.5 %3.5Colfax CountyColfax County: 3.2 %3.2Grant CountyGrant County: 3.1 %3.1San Miguel CountySan Miguel County: 3 %3Catron CountyCatron County: 2.9 %2.9San Juan CountySan Juan County: 2.8 %2.8McKinley CountyMcKinley County: 2.7 %2.7Cibola CountyCibola County: 2.3 %2.3Quay CountyQuay County: 2.1 %2.1Mora CountyMora County: 1.5 %1.5De Baca CountyDe Baca County: 0.3 %0.3
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2021 (%)
1Lea County17.5
2Luna County17
3Doña Ana County16
4Santa Fe County12
5Chaves County11.3
6Roosevelt County10.6
7Bernalillo County10.2
8Otero County9.8
9Los Alamos County8.9
10Curry County8.7
11Hidalgo County7.3
12Valencia County6.7
13Harding County6.6
14Eddy County6.2
15Torrance County5.6
16Taos County5.6
17Lincoln County5.4
18Socorro County5.1
19Sandoval County4.9
20Rio Arriba County4.8
21Sierra County4.5
22Union County4
23Guadalupe County3.5
24Colfax County3.2
25Grant County3.1
26San Miguel County3
27Catron County2.9
28San Juan County2.8
29McKinley County2.7
30Cibola County2.3
31Quay County2.1
32Mora County1.5
33De Baca County0.3

Other periods

About this ranking

People who were not US citizens at birth, as a percentage of the total population. Includes naturalized citizens, lawful permanent residents, temporary migrants and unauthorized immigrants. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

Based on place of birth, not nationality: a naturalized citizen counts as foreign born, and people born in Puerto Rico, the US island areas or abroad to American parents count as native. Not comparable with foreign_population_share, which counts foreign nationals in Spain and the EU. Calculated from counts in ACS table B05002, which are stored as inputs.

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 B05002: foreign-born population as a percentage of the total population, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b05002.dat. Retrieved 2026-10-09.

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Rank Counties in New Mexico by foreign-born share of the population using official data, and cite the source.
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Questions

Which county has the highest foreign-born share of the population?

Lea County, with 17.5% in 2021, according to the U.S. Census Bureau.

Which county has the lowest foreign-born share of the population?

De Baca County, with 0.3% 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 B05002: foreign-born population as a percentage of the total population, calculated with stored inputs. Retrieved 2026-10-09.

Foreign-born population share: other rankings

Counties in New Mexico: more rankings