New Mexico Counties by Population

by Kristen Carney Kristen Carney

Updated: June 20, 2024

The most populated counties in New Mexico are Bernalillo County with 671,586, Doña Ana County at 225,210, Santa Fe County with 155,956, Sandoval County at 155,936, and San Juan County with 120,675. You can get the most current Census population data for all 33 New Mexico counties, sorted from the most populous counties in New Mexico to the least, according to the 2023 Population Estimates Program.

Sure, you can copy this list right into your favorite spreadsheet tool. Or save yourself formatting headaches and grab the latest New Mexico counties population data as a ready-to-use Excel™ file below. It's time to stop searching and start digging into data!

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Rank County Population
1 Bernalillo County 671,586
2 Doña Ana County 225,210
3 Santa Fe County 155,956
4 Sandoval County 155,936
5 San Juan County 120,675
6 Valencia County 79,141
7 Lea County 72,101
8 Otero County 68,835
9 McKinley County 68,797
10 Chaves County 63,561
11 Eddy County 60,275
12 Curry County 47,222
13 Rio Arriba County 39,876
14 Taos County 34,405
15 Grant County 27,472
16 Cibola County 26,780
17 San Miguel County 26,668
18 Luna County 25,316
19 Lincoln County 20,029
20 Los Alamos County 19,444
21 Roosevelt County 18,787
22 Socorro County 15,963
23 Torrance County 15,633
24 Colfax County 12,255
25 Sierra County 11,488
26 Quay County 8,510
27 Guadalupe County 4,292
28 Mora County 4,123
29 Hidalgo County 3,965
30 Union County 3,964
31 Catron County 3,825
32 De Baca County 1,657
33 Harding County 624

United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2020 to July 1, 2023. U.S. Census Bureau, Population Division. Web. May 2024. http://www.census.gov/.

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