Ranking of New Mexico Counties By Percentage of American Indian and Alaska Native Alone Population Aged 25 years and above with an Educational attainment of Less than High School Diploma in 2021 (ACS-5Yrs)

Updated on September 5, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, the percentage of the New Mexico American Indian and Alaska Native Alone population (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 18.72%. Among all New Mexico counties, Grant County had the highest percentage of its American Indian and Alaska Native Alone population (aged 25 years and above) with an educational attainment of Less than High School Diploma (61.38%), followed by Sierra County (60.33%), and Socorro County (39.69%).

The chart below shows the top 10 New Mexico counties, and the table below shows the ranking of all New Mexico counties.

You can see similar information for other educational attainments, and for other races and ethnicities.

You can also see similar information for other states and for the United States.

Ranking of New Mexico Counties By Percentage of American Indian and Alaska Native Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
Grant County
Sierra County
Socorro County
Union County
Doña Ana County
Curry County
Mora County
Luna County
McKinley County
Chaves County
Ranking of New Mexico Counties By Percentage of American Indian and Alaska Native Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
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Rank County Percentage of Population (Aged 25yrs+) (%)
1 Grant County 61.38
2 Sierra County 60.33
3 Socorro County 39.69
4 Union County 36.29
5 Doña Ana County 35.19
6 Curry County 34.27
7 Mora County 26.67
8 Luna County 23.81
9 McKinley County 23.62
10 Chaves County 23.17
11 Eddy County 22.91
12 Sandoval County 22.73
13 Quay County 21.19
14 San Miguel County 20.39
15 Otero County 19.05
16 San Juan County 18.02
17 Cibola County 16.83
18 Los Alamos County 16.81
19 Lea County 16.18
20 Rio Arriba County 15.53
21 Valencia County 15.15
22 Roosevelt County 13.79
23 Bernalillo County 10.43
24 Colfax County 9.72
25 Santa Fe County 7.97
26 Torrance County 4.95
27 Taos County 4.16
28 Lincoln County 2.02
29 Catron County 0.00
29 Guadalupe County 0.00
29 Hidalgo County 0.00