New Mexico Population By County in 2020
Updated on June 16, 2025.
Based on the US Census Vintage data estimates, in 2020, the population of New Mexico was 2,118,606. Among all New Mexico counties, Bernalillo had the highest population (676,882), followed by Do�a Ana (220,069), and Santa Fe (155,056). Harding was the least populated county (654).
Hover over or click on the counties in the map below to see the populations. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.
You can see similar information for other states and by state for the United States.
Related Topics: New Mexico Census Vintage Data Topic List.
Data Source: US Census Bureau (Vintage).
See this for other years:
New Mexico Population By County in 2020
New Mexico Population By County in 2020
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| County | Population | % of State Population |
|---|---|---|
| Bernalillo | 676882 | 31.95 |
| Catron | 3609 | 0.17 |
| Chaves | 65153 | 3.08 |
| Cibola | 26969 | 1.27 |
| Colfax | 12353 | 0.58 |
| Curry | 48374 | 2.28 |
| De Baca | 1683 | 0.08 |
| Do�a Ana | 220069 | 10.39 |
| Eddy | 62342 | 2.94 |
| Grant | 28214 | 1.33 |
| Guadalupe | 4442 | 0.21 |
| Harding | 654 | 0.03 |
| Hidalgo | 4163 | 0.20 |
| Lea | 74643 | 3.52 |
| Lincoln | 20304 | 0.96 |
| Los Alamos | 19422 | 0.92 |
| Luna | 25457 | 1.20 |
| McKinley | 72586 | 3.43 |
| Mora | 4192 | 0.20 |
| Otero | 67866 | 3.20 |
| Quay | 8710 | 0.41 |
| Rio Arriba | 40268 | 1.90 |
| Roosevelt | 19153 | 0.90 |
| Sandoval | 149301 | 7.05 |
| San Juan | 121387 | 5.73 |
| San Miguel | 27128 | 1.28 |
| Santa Fe | 155056 | 7.32 |
| Sierra | 11565 | 0.55 |
| Socorro | 16559 | 0.78 |
| Taos | 34465 | 1.63 |
| Torrance | 15057 | 0.71 |
| Union | 4073 | 0.19 |
| Valencia | 76507 | 3.61 |