New Mexico County Map - List of 33 Counties and County Seats

Written and Fact-checked by , Reviewed by | Updated On: May 15, 2026

The U.S. state of New Mexico is divided into 33 Counties. Explore the New Mexico County Map, all Counties list along with their County Seats in alphabetical order and their population, areas and the date of formation.

New Mexico County Map

About Counties of New Mexico

New Mexico is one of the states in United States of America that is situated in the South-western region of the country. It is one of the mountain states of the country. New Mexico is the fifth largest state in the country. The total area of the state is 121298 square miles. The state ranks as the 36th state in the aspect of population. The state is bordered by Colorado to the north, Oklahoma and Texas to the east, Mexico in the south and Arizona in the west. The capital of New Mexico is Santa Fe. The state is also known as Land of Enchantment. New Mexico is wonderful and colourful place to visit. One would love to visit New Mexico for its charming and beautiful sceneries, wonderful national park and historical sites. New Mexico has a lot of nick names as it is called with ‘The Cactus State’, The Spanish State’, The Land of Sunshine and so on.

There are 33 Counties in New Mexico. Among Counties in New Mexico Bernalillo is the most populous county in the state. Bernalillo has the largest city called ‘Albuquerque’. It is situated in the central northern part of the state. The other famous cities of New Mexico are Las Cruces, Rio Rancho, and Santa Fe which also capital of the state New Mexico. Counties in New Mexico as well as the government give a lot of importance to Women to and often elect them as public servants. According a research conducted by Center for American Women and Politics at Rutgers University analyzed that two- third of non-white women have ever been elected as governors in the country are from New Mexico, even the present governor Grisham.

The state of New Mexico follows federal system like all other states of United States. New Mexico state government consists of Executive branch, Legislative branch and judicial branch of the government. The executive branch of the government is led by the governor, lieutenant governor, attorney general, Secretary of state, state auditor, state treasurer and other officials. The local government of Counties in New Mexico comprises of counties and municipalities. Counties are governed by an elected body of five members called County Commission, sheriff, clerk and treasurer. A municipality may consist of village, town or city. All the laws related to municipality are the same for villages, towns or cities.

The U.S. state of New Mexico has 33 Counties. This is list of New Mexico Counties and County Seats in alphabetical order along with check their population, areas and the date of formation.

List of Counties in New Mexico with County Seats

S.NCountyCounty SeatPopulationArea Formed
1Bernalillo CountyAlbuquerque676,444 (2020 Census)1,166.15 sq mi (3,020 km2)1852
2Catron CountyReserve3,5796,928.17 sq mi (17,944 km2)1921
3Chaves CountyRoswell65,1576,071.18 sq mi (15,725 km2)1889
4Cibola CountyGrants27,0044,539.63 sq mi (11,758 km2)1981
5Colfax CountyRaton12,3873,757.36 sq mi (9,732 km2)1869
6Curry CountyClovis48,6971,405.78 sq mi (3,640 km2)1909
7De Baca CountyFort Sumner1,6572,324.78 sq mi (6,021 km2)1917
8Doña Ana CountyLas Cruces219,5613,806.78 sq mi (9,860 km2)1852
9Eddy CountyCarlsbad62,3144,182.73 sq mi (10,833 km2)1887
10Grant CountySilver City28,1853,965.70 sq mi (10,272 km2)1868
11Guadalupe CountySanta Rosa4,4523,030.63 sq mi (7,849 km2)1891
12Harding CountyMosquero6572,125.93 sq mi (5,506 km2)1921
13Hidalgo CountyLordsburg4,1783,446.20 sq mi (8,926 km2)1920
14Lea CountyLovington74,4554,392.94 sq mi (11,378 km2)1917
15Lincoln CountyCarrizozo19,5324,830.98 sq mi (12,512 km2)1869
16Los Alamos CountyLos Alamos19,419109.13 sq mi (283 km2)1949
17Luna CountyDeming25,4272,965.16 sq mi (7,679 km2)1901
18McKinley CountyGallup72,9025,449.47 sq mi (14,114 km2)1899
19Mora CountyMora4,1891,930.57 sq mi (4,999 km2)1859
20Otero CountyAlamogordo67,8396,626.84 sq mi (17,164 km2)1899
21Quay CountyTucumcari8,7462,854.99 sq mi (7,394 km2)1903
22Rio Arriba CountyTierra Amarilla40,2465,858.44 sq mi (15,173 km2)1852
23Roosevelt CountyPortales18,8692,448.74 sq mi (6,342 km2)1903
24Sandoval CountyBernalillo148,8343,710.78 sq mi (9,611 km2)1903
25San Juan CountyAztec121,6615,513.98 sq mi (14,281 km2)1887
26San Miguel CountyLas Vegas27,9454,716.66 sq mi (12,216 km2)1852
27Santa Fe CountySanta Fe154,8231,909.20 sq mi (4,945 km2)1852
28Sierra CountyTruth or Consequences11,5764,179.62 sq mi (10,825 km2)1884
29Socorro CountySocorro16,6376,646.88 sq mi (17,216 km2)1852
30Taos CountyTaos33,9072,203.05 sq mi (5,706 km2)1852
31Torrance CountyEstancia16,4463,344.97 sq mi (8,663 km2)1903
32Union CountyClayton4,0793,830.19 sq mi (9,920 km2)1893
33Valencia CountyLos Lunas76,5691,068.63 sq mi (2,768 km2)1852
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20 Largest Cities in New Mexico by County

Rank City County Population (2020 Census) Latitude / Longitude
1AlbuquerqueBernalillo County564,55935.0844, -106.6504
2Las CrucesDoña Ana County111,38532.3199, -106.7637
3Rio RanchoSandoval County104,04635.2328, -106.6630
4Santa FeSanta Fe County87,50535.6870, -105.9378
5RoswellChaves County48,42233.3943, -104.5230
6FarmingtonSan Juan County46,62436.7281, -108.2187
7ClovisCurry County37,77534.4048, -103.2052
8HobbsLea County40,50832.7026, -103.1360
9AlamogordoOtero County31,38432.8995, -105.9603
10CarlsbadEddy County32,23832.4207, -104.2288
11GallupMcKinley County22,97135.5281, -108.7426
12DemingLuna County14,85532.2687, -107.7586
13Los LunasValencia County17,24234.8062, -106.7334
14ChaparralDoña Ana County14,63132.0237, -106.3858
15Sunland ParkDoña Ana County17,35931.7965, -106.5797
16Las VegasSan Miguel County13,16635.5939, -105.2239
17PortalesRoosevelt County11,13134.1862, -103.3344
18ArtesiaEddy County12,87532.8423, -104.4033
19LovingtonLea County11,00932.9440, -103.3486
20Silver CityGrant County9,70432.7701, -108.2803

Top Tourist Attractions and Famous Places to Visit in New Mexico

  • White Sands National Park - Otero County
  • Carlsbad Caverns National Park - Eddy County
  • Bandelier National Monument - Los Alamos County
  • Chaco Culture National Historical Park - San Juan County
  • Petroglyph National Monument - Albuquerque
  • Gila Cliff Dwellings National Monument - Grant County
  • Aztec Ruins National Monument - Aztec
  • Capulin Volcano National Monument - Union County
  • El Malpais National Monument - Cibola County
  • El Morro National Monument - Ramah
  • Organ Mountains-Desert Peaks National Monument - Doña Ana County
  • Valles Caldera National Preserve - Sandoval County
  • Taos Pueblo - Taos County
  • Santa Fe Plaza - Santa Fe
  • Historic Old Town Albuquerque - Albuquerque
  • Sandia Peak Tramway - Albuquerque
  • Meow Wolf House of Eternal Return - Santa Fe
  • International UFO Museum and Research Center - Roswell
  • Georgia O’Keeffe Museum - Santa Fe
  • New Mexico Museum of Natural History and Science - Albuquerque
  • Indian Pueblo Cultural Center - Albuquerque
  • Rio Grande Gorge Bridge - Taos County
  • Blue Hole - Santa Rosa
  • Bottomless Lakes State Park - Chaves County
  • City of Rocks State Park - Grant County
  • Elephant Butte Lake State Park - Sierra County
  • Rockhound State Park - Luna County
  • Hyde Memorial State Park - Santa Fe County
  • Heron Lake State Park - Rio Arriba County
  • Navajo Lake State Park - San Juan County
  • Brantley Lake State Park - Eddy County
  • Cimarron Canyon State Park - Colfax County
  • Sugarite Canyon State Park - Colfax County
  • Santa Rosa Lake State Park - Guadalupe County
  • Fort Union National Monument - Mora County
  • Pecos National Historical Park - San Miguel County
  • Turquoise Trail National Scenic Byway - Santa Fe to Albuquerque
  • Shiprock Peak - San Juan County
  • Bisti/De-Na-Zin Wilderness - San Juan County
  • Albuquerque Biological Park - Albuquerque

New Mexico Counties Facts

StateNew Mexico
CapitalSanta Fe
CountryUnited States
RegionSouthwestern United States
Total Counties33 Counties
Largest County (Area)Catron County - 6,928.17 sq mi (17,944 km2)
Smallest County (Area)Los Alamos County - 109.13 sq mi (283 km2)
Most Populous CountyBernalillo County - 676,444 (2020 Census)
Least Populous CountyHarding County - 657 (2020 Census)
Largest CityAlbuquerque
Population2,117,522 (2020 Census)
Land Area121,298 sq mi (314,161 km2)
Highest PointWheeler Peak - 13,161 ft (4,011 m)
Lowest PointRed Bluff Reservoir - 2,842 ft (866 m)
Major RiversRio Grande, Pecos River, Canadian River, San Juan River
National Park SitesWhite Sands National Park, Carlsbad Caverns National Park, Chaco Culture National Historical Park
Famous AttractionsTaos Pueblo, Santa Fe Plaza, Sandia Peak Tramway, Roswell UFO Museum, Bandelier National Monument
Major AirportsAlbuquerque International Sunport, Santa Fe Regional Airport
Time ZoneMountain Time Zone (UTC -7)
Postal AbbreviationNM
FIPS Code35
Official Websitenewmexico.gov