United States County Maps
Menu
West county atlas

New Mexico county map

See all 33 counties on one clear, labelled map. Use the alphabetical table below to verify names and compare land area.

Boundary vintage: 2025Source: U.S. Census BureauUpdated September 15, 2026
Jump to county list
Map zoom 100%
Labelled map of New Mexico counties BernalilloCatronChavesCibolaColfaxCurryDe BacaDoña AnaEddyGrantGuadalupeHardingHidalgoLeaLincolnLos AlamosLunaMcKinleyMoraOteroQuayRio ArribaRooseveltSan JuanSan MiguelSandovalSanta FeSierraSocorroTaosTorranceUnionValencia
Boundary data: U.S. Census Bureau 2025 cartographic boundary files. Zoom in for county names, then drag the map or use the arrow keys to move around.
Map scope: This is a county boundary reference map. It does not show roads, parcels, ZIP codes, election precincts, or terrain.

Alphabetical list of New Mexico counties

The land-area figures are rounded to the nearest square mile. Water area is shown separately so large lakes or coastal waters do not obscure the comparison.

NameFIPS codeLand areaWater area
Bernalillo County350011,161 sq mi6 sq mi
Catron County350036,924 sq mi5 sq mi
Chaves County350056,067 sq mi8 sq mi
Cibola County350064,540 sq mi2 sq mi
Colfax County350073,758 sq mi10 sq mi
Curry County350091,406 sq mi3 sq mi
De Baca County350112,323 sq mi11 sq mi
Doña Ana County350133,808 sq mi7 sq mi
Eddy County350154,176 sq mi22 sq mi
Grant County350173,961 sq mi6 sq mi
Guadalupe County350193,030 sq mi1 sq mi
Harding County350212,125 sq mi0 sq mi
Hidalgo County350233,439 sq mi9 sq mi
Lea County350254,392 sq mi3 sq mi
Lincoln County350274,831 sq mi0 sq mi
Los Alamos County35028109 sq mi0 sq mi
Luna County350292,965 sq mi0 sq mi
McKinley County350315,451 sq mi5 sq mi
Mora County350331,926 sq mi2 sq mi
Otero County350356,613 sq mi14 sq mi
Quay County350372,874 sq mi7 sq mi
Rio Arriba County350395,861 sq mi35 sq mi
Roosevelt County350412,446 sq mi7 sq mi
San Juan County350455,517 sq mi21 sq mi
San Miguel County350474,722 sq mi20 sq mi
Sandoval County350433,710 sq mi4 sq mi
Santa Fe County350491,910 sq mi1 sq mi
Sierra County350514,181 sq mi57 sq mi
Socorro County350536,646 sq mi2 sq mi
Taos County350552,202 sq mi1 sq mi
Torrance County350573,345 sq mi1 sq mi
Union County350593,825 sq mi6 sq mi
Valencia County350611,067 sq mi1 sq mi

Largest New Mexico counties by land area

These are the five largest mapped units in New Mexico by Census-reported land area:

  1. Catron County — 6,924 square miles
  2. Socorro County — 6,646 square miles
  3. Otero County — 6,613 square miles
  4. Chaves County — 6,067 square miles
  5. Rio Arriba County — 5,861 square miles

How to read and use this map

County lines are administrative boundaries, not postal routes. A mailing address can use a city name associated with a neighboring area, and ZIP codes can cross county lines. When you need to identify a county for an address, confirm it with an official geocoder or local government source.

For classroom or planning use, print directly from this page. If labels become crowded, choose landscape orientation and reduce page margins. The underlying vector lines remain crisp at different sizes.

Frequently asked questions

How many counties are in New Mexico?

New Mexico has 33 counties in the U.S. Census Bureau’s 2025 cartographic boundary file.

Can I print this New Mexico county map?

Yes. Choose Print map and use landscape orientation for the widest map. Because the map is SVG, its boundary lines stay sharp when scaled.

Are these legal survey boundaries?

No. This is a generalized reference map. Property, parcel, election, and legal boundary questions should be checked with the relevant state or local agency.

Map source

U.S. Census Bureau, 2025 Cartographic Boundary File, Counties, 1:20,000,000. Land and water area fields are supplied in the same file and converted from square meters to square miles. Accessed September 15, 2026.