List of all New Mexico (NM) counties in alphabetical order, seats, size, numbers Skip to main content

List of all New Mexico (NM) counties in alphabetical order, seats, size, numbers

List of all New Mexico counties in alphabetical order

Find out about the list of all New Mexico counties in alphabetical order, including their size, seats and numbers.

The U.S. state of New Mexico has 33 counties. Here is the full list in alphabetical order:


B

Bernalillo County (NM)

C

Catron County (NM)

Chaves County (NM) 

Cibola County (NM)

Colfax County (NM)

Curry County (NM)


D

De Baca County (NM)

Doña Ana County (NM)


E

Eddy County (NM)  


G

Grant County (NM)

Guadalupe County (NM) 


H

Harding County (NM) 

Hidalgo County (NM) 


L

Lea County (NM)

Lincoln County (NM) 

Los Alamos County (NM) 

Luna County (NM)


M

McKinley County (NM)

Mora County (NM)


O

Otero County (NM)


Q

Quay County (NM)


R

Rio Arriba County (NM)

Roosevelt County (NM)


S

Sandoval County (NM)

San Juan County (NM)  

San Miguel County (NM)  

Santa Fe County (NM)  

Sierra County (NM)

Socorro County (NM)


T

Taos County (NM) 

Torrance County (NM) 


U

Union County (NM)  


V

Valencia County (NM)


New Mexico counties in printable and scannable format 

B

Bernalillo County (NM)


C

Catron County (NM), Chaves County (NM), Cibola County (NM), Colfax County (NM), Curry County (NM)


D

De Baca County (NM), Doña Ana County (NM)


E

Eddy County (NM)  


G

Grant County (NM), Guadalupe County (NM) 


H

Harding County (NM), Hidalgo County (NM) 


L

Lea County (NM), Lincoln County (NM), Los Alamos County (NM), Luna County (NM)


M

McKinley County (NM), Mora County (NM)


O

Otero County (NM)


Q

Quay County (NM)

R

Rio Arriba County (NM), Roosevelt County (NM)


S

Sandoval County (NM), San Juan County (NM), San Miguel County (NM), Santa Fe County (NM), Sierra County (NM), Socorro County (NM)


T

Taos County (NM), Torrance County (NM) 


U

Union County (NM)  

V

Valencia County (NM)


List of all New Mexico counties and their county size 

Bernalillo County, NM — 1,167 sq mi  

Catron County, NM — 6,924 sq mi

Chaves County, NM — 6,065 sq mi  

Cibola County, NM — 4,539 sq mi  

Colfax County, NM — 3,758 sq mi.  

Curry County, NM — 1,407 sq mi  

De Baca County, NM — 2,326 sq mi  

Doña Ana County, NM — 3,808 sq mi  

Eddy County, NM — 4,176 sq mi  

Grant County, NM — 3,962 sq mi  

Guadalupe County, NM — 3,030 sq mi  

Harding County, NM — 2,126 sq mi  

Hidalgo County, NM — 3,437 sq mi  

Lea County, NM — 4,391 sq mi  

Lincoln County, NM — 4,831 sq mi  

Los Alamos County, NM — 109 sq mi 

Luna County, NM — 2,965 sq mi  

McKinley County, NM — 5,450 sq mi  

Mora County, NM — 1,934 sq mi  

Otero County, NM — 6,613 sq. mi.  

Quay County, NM — 2,882 sq mi  

Rio Arriba County, NM — 5,861 sq mi  

Roosevelt County, NM — 2,449 sq mi  

Sandoval County, NM — 3,711 sq. mi.  

San Juan County, NM — 5,513 sq. mi.  

San Miguel County, NM — 4,716 sq mi  

Santa Fe County, NM — 1,909 sq mi  

Sierra County, NM — 4,179 sq mi  

Socorro County, NM — 6,647 sq mi  

Taos County, NM — 2,204 sq mi  

Torrance County, NM — 3,345 sq mi  

Union County, NM — 3,824 sq. mi.  

Valencia County, NM — 1,068 sq mi  


List of all New Mexico counties and their county seats 

B

Bernalillo County, NM — Albuquerque  

C

Catron County, NM — Reserve  

Chaves County, NM — Roswell  

Cibola County, NM — Grants  

Colfax County, NM — Raton  

Curry County, NM — Clovis  


D

De Baca County, NM — Fort Sumner  

Doña Ana County, NM — Las Cruces  


E

Eddy County, NM — Carlsbad  


G

Grant County, NM — Silver City  

Guadalupe County, NM — Santa Rosa  


H

Harding County, NM — Mosquero  

Hidalgo County, NM — Lordsburg  


L

Lea County, NM — Lovington  

Lincoln County, NM — Carrizozo  

Los Alamos County, NM — Los Alamos  

Luna County, NM — Deming  


M

McKinley County, NM — Gallup  

Mora County, NM — Mora  


O

Otero County, NM — Alamogordo  

Q

Quay County, NM — Tucumcari  

R

Rio Arriba County, NM — Tierra Amarilla  

Roosevelt County, NM — Portales  


S

Sandoval County, NM — Bernalillo  

San Juan County, NM — Aztec  

San Miguel County, NM — Las Vegas  

Santa Fe County, NM — Santa Fe  

Sierra County, NM — Truth or Consequences  

Socorro County, NM — Socorro  


T

Taos County, NM — Taos  

Torrance County, NM — Estancia  


U

Union County, NM — Clayton  

V

Valencia County, NM — Los Lunas  


List of all New Mexico counties by region 

Northern New Mexico  

Colfax County, NM  

Los Alamos County, NM

Mora County, NM  

Rio Arriba County, NM  

San Juan County, NM

San Miguel County, NM 

Santa Fe County, NM

Taos County, NM 

Union County, NM  


Central New Mexico  

Bernalillo County, NM

Cibola County, NM 

Guadalupe County, NM  

McKinley County, NM  

Sandoval County, NM  

Torrance County, NM

Valencia County NM


Southern New Mexico  

Catron County, NM 

Chaves County, NM 

Curry County, NM  

De Baca County, NM  

Doña Ana County, NM

Eddy County, NM 

Grant County, NM  

Harding County NM 

Hidalgo County, NM  

Lea County, NM  

Lincoln County, NM 

Luna County, NM  

Otero County, NM 

Quay County, NM  

Roosevelt County, NM

Sierra County, NM

Socorro County, NM  


What is the largest county in New Mexico?

The largest county in New Mexico by land area is Catron County, covering 6,924 sq mi.


What is the smallest county in New Mexico by land area?

The smallest county in New Mexico by land area is Los Alamos County, which covers 109 sq mi.


Unique attractions in New Mexico 

1. White Sands National Park 

2. Carlsbad Caverns National Park  

3. Ah-Shi-Sle-Pah Wilderness  

4. Bisti/De-Na-Zin Wilderness  

5. Monument

6. Gila Cliff Dwellings National

7. El Santuario de Chimayó

8. Meow Wolf’s House of Eternal Return

9. Ra Paulette’s Hand-Carved Caves

10. International UFO Museum

11. Tinkertown Museum

12. Turquoise Trail National Scenic Byway

13. Cumbres & Toltec Scenic Railroad  

14. Very Large Array 

15. Blue Hole  

16. Camel Rock

17. Roswell Spacewalk

18. Bandelier National Monument

19. Chaco Culture National Historical Park

20. Taos Pueblo