Ranking of New Mexico Counties By Population with Unclassified Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 326.68K people in New Mexico with Unclassified ancestry. Among all New Mexico counties, Bernalillo County had the highest population with Unclassified ancestry (106.14K), followed by Doña Ana County (35.47K), and Sandoval County (21.22K).

The chart and table below shows the top 10 counties with high number of people with Unclassified ancestry.

You can see similar information for other states and for other ancestry groups in New Mexico.

Data Source: US Census Bureau.
Ranking of New Mexico Counties By Population with Unclassified Ancestry in 2021
Bernalillo County
Doña Ana County
Sandoval County
Santa Fe County
San Juan County
Eddy County
Chaves County
Valencia County
Lea County
Otero County
Ranking of New Mexico Counties By Population with Unclassified Ancestry in 2021
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Rank County Population
1 Bernalillo County 106139
2 Doña Ana County 35473
3 Sandoval County 21220
4 Santa Fe County 19225
5 San Juan County 17774
6 Eddy County 15352
7 Chaves County 14815
8 Valencia County 14663
9 Lea County 14142
10 Otero County 10462
11 Curry County 8873
12 McKinley County 8798
13 San Miguel County 4785
14 Roosevelt County 4020
15 Taos County 3905
16 Grant County 3398
17 Luna County 2765
18 Los Alamos County 2598
19 Lincoln County 2202
20 Colfax County 2037
21 Rio Arriba County 2000
22 Torrance County 1990
23 Quay County 1912
24 Cibola County 1817
25 Socorro County 1728
26 Sierra County 1476
27 Guadalupe County 1046
28 Union County 644
29 Hidalgo County 466
30 Catron County 324
31 De Baca County 236
32 Mora County 225
33 Harding County 170