New Mexico County Map With Cities
By Marko Visic · Updated Oct 5, 2026
New Mexico has 33 counties, covering 121,313 square miles of land. The Census Bureau estimates its population at 2,125,498 as of July 1, 2025. The largest county by land area is Catron County; the most populous is Bernalillo County; the least populous is Harding County.
Tap or click any county for details. Need a printable version? Blank New Mexico map (PDF/PNG/SVG).
All 33 New Mexico counties
| County | FIPS code | Population (July 1, 2025) ▼ | Change since April 2020 | Land area (sq mi) | People per sq mi | Median household income (2020–2024) |
|---|---|---|---|---|---|---|
| Bernalillo County | 35001 | 667,601 | -1.3% | 1,162 | 575 | $69,473 |
| Doña Ana County | 35013 | 229,091 | +4.3% | 3,808 | 60 | $56,848 |
| Sandoval County | 35043 | 159,565 | +7.2% | 3,710 | 43 | $86,636 |
| Santa Fe County | 35049 | 156,907 | +1.3% | 1,910 | 82 | $79,071 |
| San Juan County | 35045 | 120,340 | -1.1% | 5,517 | 22 | $55,872 |
| Valencia County | 35061 | 82,013 | +7.4% | 1,067 | 77 | $58,933 |
| Lea County | 35025 | 74,749 | +0.4% | 4,392 | 17 | $68,015 |
| Otero County | 35035 | 70,368 | +3.7% | 6,613 | 11 | $55,876 |
| McKinley County | 35031 | 68,119 | -6.5% | 5,451 | 12 | $47,668 |
| Chaves County | 35005 | 63,364 | -2.8% | 6,067 | 10 | $52,938 |
| Eddy County | 35015 | 62,509 | +0.3% | 4,176 | 15 | $78,426 |
| Curry County | 35009 | 46,655 | -3.7% | 1,406 | 33 | $57,309 |
| Rio Arriba County | 35039 | 39,832 | -1.3% | 5,861 | 7 | $57,155 |
| Taos County | 35055 | 34,564 | +0.2% | 2,202 | 16 | $58,950 |
| Grant County | 35017 | 27,252 | -3.3% | 3,961 | 7 | $44,958 |
| Cibola County | 35006 | 26,807 | -0.9% | 4,540 | 6 | $50,759 |
| San Miguel County | 35047 | 26,260 | -3.5% | 4,722 | 6 | $49,431 |
| Luna County | 35029 | 25,407 | 0.0% | 2,965 | 9 | $36,419 |
| Lincoln County | 35027 | 19,844 | -2.1% | 4,831 | 4 | $53,303 |
| Los Alamos County | 35028 | 19,407 | 0.0% | 109 | 178 | $147,139 |
| Roosevelt County | 35041 | 18,615 | -3.0% | 2,446 | 8 | $52,685 |
| Torrance County | 35057 | 16,100 | +7.0% | 3,345 | 5 | $57,842 |
| Socorro County | 35053 | 15,838 | -4.6% | 6,646 | 2 | $36,570 |
| Colfax County | 35007 | 12,184 | -1.6% | 3,758 | 3 | $53,554 |
| Sierra County | 35051 | 11,395 | -1.5% | 4,181 | 3 | $41,600 |
| Quay County | 35037 | 8,454 | -3.3% | 2,874 | 3 | $41,946 |
| Guadalupe County | 35019 | 4,343 | -2.5% | 3,030 | 1 | $42,750 |
| Mora County | 35033 | 4,051 | -3.2% | 1,926 | 2 | $53,663 |
| Hidalgo County | 35023 | 3,929 | -5.9% | 3,439 | 1 | $48,882 |
| Union County | 35059 | 3,844 | -5.8% | 3,825 | 1 | $46,694 |
| Catron County | 35003 | 3,827 | +6.9% | 6,924 | 1 | $49,864 |
| De Baca County | 35011 | 1,647 | -3.2% | 2,323 | 1 | — |
| Harding County | 35021 | 617 | -5.7% | 2,125 | 0 | $48,553 |
FIPS code: the Census Bureau’s five-digit county ID, a two-digit state code plus a three-digit county code. It is not a ZIP code.
— means the Census Bureau published no median household income estimate for this county.
How many counties does New Mexico have?
New Mexico has 33 counties covering 121,313 square miles. The state was admitted to the Union in 1912 as the 47th state.
The largest county by land area is Catron County at 6,924 square miles, home to 3,827 residents. The most populous is Bernalillo County with 667,601 residents — a density of 575 people per square mile. At the other end of the scale, Harding County has 617 residents.
New Mexico’s capital is Santa Fe, while the largest city is Albuquerque.
Related resources
Download a printable outline of New Mexico’s county boundaries from our blank map of New Mexico page — available in SVG, PNG, and PDF.
Use the What County Am I In? tool to detect which New Mexico county a GPS location or address falls in, or the Address to County Lookup for batch input.
For demographic radius analysis, the Find ZIP Codes in Radius and Population Within Radius tools let you draw a circle around any New Mexico address and see every ZIP code and the total population inside.
Two SimpleMapLab studies cover New Mexico specifically: the 100-mile radius around Santa Fe measures how much of the state lives within 100 miles of its capitol, and the loneliest town in New Mexico ranks the state’s most isolated inhabited place. The county-counts blog post puts New Mexico’s 33 counties in national context.
Frequently asked questions
- County Population Totals, Vintage 2025: estimates for July 1, 2025, released March 2026
- Gazetteer Files, 2026: county land and water area
- American Community Survey 5-Year Estimates, 2020–2024: median household income (table B19013)
- County boundaries on the map: US Atlas TopoJSON build of the US Census Bureau’s TIGER/Line shapefiles. All figures are US Census Bureau data in the public domain.