How many counties in New Mexico? All 33 listed
Quick answer
New Mexico has 33 counties and county equivalents holding 2,114,768 residents. The most populous county in New Mexico is Bernalillo County with 674,357 residents; the smallest is Harding County. County boundaries divide the state's land area — measured in square miles by the Census Bureau — into the units used for property assessment, elections and local sales tax. The statewide sales tax base rate is 4.875%, before county and city add-ons.
All 33 counties
Ranked by population, Census 2019-2023 ACS 5-year estimates.
| County | Population | Median income | Median home value | Median rent |
|---|---|---|---|---|
| Bernalillo County | 674,357 | $66,514 | $268,500 | $1,087 |
| Doña Ana County | 221,665 | $55,663 | $205,400 | $903 |
| Santa Fe County | 155,175 | $74,689 | $416,900 | $1,318 |
| Sandoval County | 151,538 | $84,053 | $282,300 | $1,408 |
| San Juan County | 121,178 | $53,020 | $185,100 | $917 |
| Valencia County | 77,382 | $58,333 | $206,800 | $970 |
| Lea County | 73,154 | $68,750 | $176,000 | $1,119 |
| McKinley County | 71,172 | $44,496 | $72,100 | $810 |
| Otero County | 68,235 | $52,717 | $149,500 | $926 |
| Chaves County | 64,446 | $52,029 | $141,900 | $838 |
| Eddy County | 61,114 | $79,605 | $199,400 | $1,183 |
| Curry County | 47,932 | $56,259 | $160,800 | $987 |
| Rio Arriba County | 40,165 | $53,901 | $230,900 | $760 |
| Taos County | 34,516 | $58,908 | $354,000 | $1,069 |
| Grant County | 27,856 | $45,921 | $164,400 | $810 |
| Cibola County | 27,059 | $51,765 | $120,000 | $724 |
| San Miguel County | 27,036 | $47,400 | $177,600 | $774 |
| Luna County | 25,420 | $37,917 | $112,500 | $685 |
| Lincoln County | 20,227 | $51,643 | $212,200 | $883 |
| Los Alamos County | 19,374 | $143,188 | $452,500 | $1,308 |
| Roosevelt County | 19,002 | $52,445 | $136,000 | $863 |
| Socorro County | 16,308 | $47,556 | $143,200 | $653 |
| Torrance County | 15,290 | $46,250 | $145,100 | $845 |
| Colfax County | 12,336 | $52,690 | $161,000 | $704 |
| Sierra County | 11,511 | $37,840 | $144,800 | $695 |
| Quay County | 8,616 | $43,698 | $82,200 | $752 |
| Guadalupe County | 4,379 | $40,149 | $107,200 | $515 |
| Mora County | 4,176 | $50,178 | $119,900 | $785 |
| Hidalgo County | 4,097 | $49,076 | $114,000 | $803 |
| Union County | 4,039 | $45,319 | $135,900 | $650 |
| Catron County | 3,685 | $46,439 | $171,800 | $740 |
| De Baca County | 1,580 | $40,804 | $158,000 | $727 |
| Harding County | 748 | $41,250 | $86,500 | $700 |
Source: US Census Bureau, ACS 2019-2023 5-year estimates · rates as published for 2019-2023 ACS 5-year
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More New Mexico data.