New Mexico Counties by Land Area
Want to know about the largest to smallest counties in New Mexico, USA in terms of total land area? Check this resource New Mexico counties by land area to discover all the details regarding county map (boundary), and nearby counties. On the other hand, check New Mexico counties by population and New Mexico cities by population to know more about city and county based demographic details.
What is the largest county in New Mexico by land area?
Catron County is the largest county in New Mexico spanning 6924.19 square miles, with an additional 5.48 square miles of water area. Following Catron County, Socorro County ranks as the second largest in terms of land area, covering 6646.39 square miles, while Otero County secures the position as the third largest county in New Mexico.
What is the smallest county by land area in New Mexico?
Los Alamos County is the smallest in New Mexico by total land area, covers about 109.12 square miles.
What is the largest county by population in New Mexico?
Bernalillo County in New Mexico, USA, stands as the most populous county having 676,444 residents as per the 2022 census data.
What is the smallest county by population in New Mexico?
Harding County is the smallest in New Mexico by total population, having 657 residents as per the 2022 census data.
| Rank | County in New Mexico | Land Area square miles | Water Area square miles | Total Area square miles |
|---|---|---|---|---|
| 1 | Catron County | 6,924 | 5 | 6,930 |
| 2 | Socorro County | 6,646 | 2 | 6,648 |
| 3 | Otero County | 6,613 | 14 | 6,627 |
| 4 | Chaves County | 6,067 | 8 | 6,075 |
| 5 | Rio Arriba County | 5,861 | 35 | 5,896 |
| 6 | San Juan County | 5,517 | 21 | 5,538 |
| 7 | McKinley County | 5,451 | 5 | 5,456 |
| 8 | Lincoln County | 4,831 | 0 | 4,831 |
| 9 | San Miguel County | 4,722 | 20 | 4,741 |
| 10 | Cibola County | 4,540 | 2 | 4,542 |
| 11 | Lea County | 4,392 | 3 | 4,395 |
| 12 | Sierra County | 4,181 | 57 | 4,238 |
| 13 | Eddy County | 4,176 | 22 | 4,198 |
| 14 | Grant County | 3,961 | 6 | 3,967 |
| 15 | Union County | 3,825 | 6 | 3,831 |
| 16 | Dona Ana County | 3,808 | 7 | 3,815 |
| 17 | Colfax County | 3,758 | 10 | 3,768 |
| 18 | Sandoval County | 3,710 | 4 | 3,714 |
| 19 | Hidalgo County | 3,439 | 9 | 3,448 |
| 20 | Torrance County | 3,345 | 1 | 3,346 |
| 21 | Guadalupe County | 3,030 | 1 | 3,031 |
| 22 | Luna County | 2,965 | 0 | 2,965 |
| 23 | Quay County | 2,874 | 7 | 2,881 |
| 24 | Roosevelt County | 2,446 | 7 | 2,453 |
| 25 | DeBaca County | 2,323 | 11 | 2,334 |
| 26 | Taos County | 2,202 | 1 | 2,204 |
| 27 | Harding County | 2,125 | 0 | 2,126 |
| 28 | Mora County | 1,926 | 2 | 1,929 |
| 29 | Santa Fe County | 1,910 | 1 | 1,911 |
| 30 | Curry County | 1,406 | 3 | 1,409 |
| 31 | Bernalillo County | 1,161 | 6 | 1,167 |
| 32 | Valencia County | 1,067 | 1 | 1,068 |
| 33 | Los Alamos County | 109 | 0 | 109 |