| Rank |
County |
Land Area |
| 1 |
Catron County, New Mexico
|
6,923.7
|
| 2 |
Socorro County, New Mexico
|
6,646.7
|
| 3 |
Otero County, New Mexico
|
6,613.2
|
| 4 |
Chaves County, New Mexico
|
6,065.3
|
| 5 |
Rio Arriba County, New Mexico
|
5,860.8
|
| 6 |
San Juan County, New Mexico
|
5,513.1
|
| 7 |
McKinley County, New Mexico
|
5,449.8
|
| 8 |
Lincoln County, New Mexico
|
4,831.1
|
| 9 |
San Miguel County, New Mexico
|
4,715.8
|
| 10 |
Cibola County, New Mexico
|
4,539.5
|
| 11 |
Lea County, New Mexico
|
4,390.9
|
| 12 |
Sierra County, New Mexico
|
4,179.0
|
| 13 |
Eddy County, New Mexico
|
4,175.7
|
| 14 |
Grant County, New Mexico
|
3,961.6
|
| 15 |
Union County, New Mexico
|
3,823.7
|
| 16 |
Dona Ana County, New Mexico
|
3,807.5
|
| 17 |
Colfax County, New Mexico
|
3,758.1
|
| 18 |
Sandoval County, New Mexico
|
3,710.7
|
| 19 |
Hidalgo County, New Mexico
|
3,436.9
|
| 20 |
Torrance County, New Mexico
|
3,344.8
|
| 21 |
Guadalupe County, New Mexico
|
3,030.5
|
| 22 |
Luna County, New Mexico
|
2,965.2
|
| 23 |
Quay County, New Mexico
|
2,874.3
|
| 24 |
Roosevelt County, New Mexico
|
2,447.4
|
| 25 |
De Baca County, New Mexico
|
2,322.6
|
| 26 |
Taos County, New Mexico
|
2,203.1
|
| 27 |
Harding County, New Mexico
|
2,125.4
|
| 28 |
Mora County, New Mexico
|
1,931.3
|
| 29 |
Santa Fe County, New Mexico
|
1,909.4
|
| 30 |
Curry County, New Mexico
|
1,404.8
|
| 31 |
Bernalillo County, New Mexico
|
1,160.8
|
| 32 |
Valencia County, New Mexico
|
1,066.2
|
| 33 |
Los Alamos County, New Mexico
|
109.2
|