New Mexico Counties
Complete list of all 33 counties in New Mexico with population, area, median income, and county seats — plus a free printable blank map.
Labeled outline map of New Mexico counties. Download a printable version in SVG, PNG, or PDF.
All 31 New Mexico counties
| County | County Seat | Population ▼ | Area | Median Income | Cities |
|---|---|---|---|---|---|
| Bernalillo | — | 671,328 | 1,161 mi² | $72,204 | 6 |
| Doña Ana | — | 217,107 | 0 mi² | $57,227 | 22 |
| Sandoval | — | 174,091 | 3,711 mi² | $90,961 | 19 |
| Santa Fe | — | 158,219 | 1,909 mi² | $79,807 | 9 |
| San Juan | — | 119,399 | 5,513 mi² | $57,093 | 14 |
| Lea | — | 73,733 | 4,391 mi² | $68,401 | 10 |
| Valencia | — | 72,505 | 1,066 mi² | $58,842 | 5 |
| Chaves | — | 65,108 | 6,065 mi² | $52,399 | 6 |
| Eddy | — | 60,686 | 4,176 mi² | $77,573 | 7 |
| Curry | — | 47,525 | 1,405 mi² | $56,953 | 6 |
| Rio Arriba | — | 44,855 | 5,861 mi² | $58,399 | 30 |
| Taos | — | 32,842 | 2,203 mi² | $56,935 | 19 |
| Grant | — | 27,599 | 3,962 mi² | $45,724 | 16 |
| Cibola | — | 27,301 | 4,539 mi² | $55,882 | 14 |
| San Miguel | — | 26,986 | 4,716 mi² | $50,145 | 17 |
How many counties does New Mexico have?
New Mexico has 33 counties covering 121,298 square miles and roughly 2,124,610 residents. The state was admitted to the Union in 1912 as the 47th state, and the current county boundaries reflect more than a century of administrative subdivision.
The largest county by land area is Catron County at 6,924 square miles, home to about 3,743 residents. The most populous is Bernalillo County with approximately 671,328 residents — a density of about 578 people per square mile.
At the other end of the scale, Harding County has only about 1,442 residents.
New Mexico’s capital is Santa Fe, while the largest city is Albuquerque — a common pattern in the United States, where many states placed their capitals in smaller, more central towns rather than their largest commercial hubs.
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
Population and demographics are aggregated from ZIP-code-level US Census data via the SimpleMaps dataset. Countiesboundaries are from the US Atlas TopoJSON build of the Census Bureau’s TIGER/Line shapefiles. Land area is from the Census Gazetteer. State counts follow the US Census Bureau’s definition of counties and county-equivalents (50 states + DC = 3,143). All sources are public domain.