New Mexico Population By County in 2021 (ACS-5Yrs)
Updated on February 28, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the total population of New Mexico was 2.11M. Among all New Mexico counties, Bernalillo was the most populated county (674.92K), followed by Doña Ana (218.16K), and then Santa Fe (153.63K).
On the other hand, the least populated counties were: Harding (533), De Baca (1.87K), and Catron (3.58K).
The chart and table below shows the population of each county and the percentage of New Mexico population in each county.
You can see similar information for other states and by state for the United States.
Related Topics: New Mexico ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates, 2021 Census.
New Mexico Population By County in 2021
New Mexico Population By County in 2021
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| County | Population | % of State Population |
|---|---|---|
| Bernalillo | 674919 | 32.00 |
| Catron | 3581 | 0.17 |
| Chaves | 65014 | 3.08 |
| Cibola | 27284 | 1.29 |
| Colfax | 12406 | 0.59 |
| Curry | 48716 | 2.31 |
| De Baca | 1873 | 0.09 |
| Doña Ana | 218157 | 10.34 |
| Eddy | 61096 | 2.90 |
| Grant | 28178 | 1.34 |
| Guadalupe | 4465 | 0.21 |
| Harding | 533 | 0.03 |
| Hidalgo | 4214 | 0.20 |
| Lea | 72743 | 3.45 |
| Lincoln | 20084 | 0.95 |
| Los Alamos | 19169 | 0.91 |
| Luna | 25282 | 1.20 |
| McKinley | 72946 | 3.46 |
| Mora | 4232 | 0.20 |
| Otero | 67298 | 3.19 |
| Quay | 8675 | 0.41 |
| Rio Arriba | 40347 | 1.91 |
| Roosevelt | 19223 | 0.91 |
| Sandoval | 147327 | 6.98 |
| San Juan | 122912 | 5.83 |
| San Miguel | 27357 | 1.30 |
| Santa Fe | 153632 | 7.28 |
| Sierra | 11512 | 0.55 |
| Socorro | 16605 | 0.79 |
| Taos | 34322 | 1.63 |
| Torrance | 15150 | 0.72 |
| Union | 4122 | 0.20 |
| Valencia | 75992 | 3.60 |