New Mexico Counties by Population

Below are the 33 New Mexico counties sorted by population from largest to smallest. The population data are from the 2021 American Community Survey. You can copy and paste this list directly into your favorite spreadsheet program. Don't you just adore lovely numbers listed nicely in columns & rows? We do!

Rank County Population
1 Bernalillo County 674,919
2 Doña Ana County 218,157
3 Santa Fe County 153,632
4 Sandoval County 147,327
5 San Juan County 122,912
6 Valencia County 75,992
7 McKinley County 72,946
8 Lea County 72,743
9 Otero County 67,298
10 Chaves County 65,014
11 Eddy County 61,096
12 Curry County 48,716
13 Rio Arriba County 40,347
14 Taos County 34,322
15 Grant County 28,178
16 San Miguel County 27,357
17 Cibola County 27,284
18 Luna County 25,282
19 Lincoln County 20,084
20 Roosevelt County 19,223
21 Los Alamos County 19,169
22 Socorro County 16,605
23 Torrance County 15,150
24 Colfax County 12,406
25 Sierra County 11,512
26 Quay County 8,675
27 Guadalupe County 4,465
28 Mora County 4,232
29 Hidalgo County 4,214
30 Union County 4,122
31 Catron County 3,581
32 De Baca County 1,873
33 Harding County 533

United States Census Bureau. B01001 SEX BY AGE, 2021 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 8 December 2022. http://www.census.gov/.

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