| Rank |
County |
Land Area |
| 1 |
Las Animas County, Colorado
|
4,772.7
|
| 2 |
Moffat County, Colorado
|
4,743.3
|
| 3 |
Weld County, Colorado
|
3,987.2
|
| 4 |
Mesa County, Colorado
|
3,329.0
|
| 5 |
Gunnison County, Colorado
|
3,239.1
|
| 6 |
Rio Blanco County, Colorado
|
3,220.9
|
| 7 |
Saguache County, Colorado
|
3,168.5
|
| 8 |
Garfield County, Colorado
|
2,947.6
|
| 9 |
Larimer County, Colorado
|
2,596
|
| 10 |
Lincoln County, Colorado
|
2,577.6
|
| 11 |
Baca County, Colorado
|
2,555.0
|
| 12 |
Washington County, Colorado
|
2,518.0
|
| 13 |
Pueblo County, Colorado
|
2,386.1
|
| 14 |
Yuma County, Colorado
|
2,364.4
|
| 15 |
Routt County, Colorado
|
2,362.0
|
| 16 |
Montrose County, Colorado
|
2,240.7
|
| 17 |
Park County, Colorado
|
2,193.8
|
| 18 |
Kit Carson County, Colorado
|
2,160.8
|
| 19 |
El Paso County, Colorado
|
2,126.8
|
| 20 |
Montezuma County, Colorado
|
2,029.5
|
| 21 |
Elbert County, Colorado
|
1,850.8
|
| 22 |
Grand County, Colorado
|
1,846.3
|
| 23 |
Logan County, Colorado
|
1,838.5
|
| 24 |
Cheyenne County, Colorado
|
1,778.3
|
| 25 |
Kiowa County, Colorado
|
1,767.8
|
| 26 |
La Plata County, Colorado
|
1,692.1
|
| 27 |
Eagle County, Colorado
|
1,684.5
|
| 28 |
Prowers County, Colorado
|
1,638.4
|
| 29 |
Jackson County, Colorado
|
1,613.7
|
| 30 |
Huerfano County, Colorado
|
1,591
|
| 31 |
Fremont County, Colorado
|
1,533.1
|
| 32 |
Bent County, Colorado
|
1,512.9
|
| 33 |
Archuleta County, Colorado
|
1,350.2
|
| 34 |
Conejos County, Colorado
|
1,287.4
|
| 35 |
San Miguel County, Colorado
|
1,286.6
|
| 36 |
Morgan County, Colorado
|
1,280.4
|
| 37 |
Otero County, Colorado
|
1,262.0
|
| 38 |
Costilla County, Colorado
|
1,227.0
|
| 39 |
Adams County, Colorado
|
1,167.7
|
| 40 |
Delta County, Colorado
|
1,142.0
|
| 41 |
Hinsdale County, Colorado
|
1,117.2
|
| 42 |
Dolores County, Colorado
|
1,067.0
|
| 43 |
Chaffee County, Colorado
|
1,013.4
|
| 44 |
Pitkin County, Colorado
|
970.7
|
| 45 |
Rio Grande County, Colorado
|
912.0
|
| 46 |
Mineral County, Colorado
|
875.7
|
| 47 |
Douglas County, Colorado
|
840.2
|
| 48 |
Arapahoe County, Colorado
|
798.1
|
| 49 |
Crowley County, Colorado
|
787.4
|
| 50 |
Jefferson County, Colorado
|
764.2
|
| 51 |
Custer County, Colorado
|
738.6
|
| 52 |
Boulder County, Colorado
|
726.3
|
| 53 |
Alamosa County, Colorado
|
722.6
|
| 54 |
Phillips County, Colorado
|
687.9
|
| 55 |
Summit County, Colorado
|
608.4
|
| 56 |
Teller County, Colorado
|
557.1
|
| 57 |
Sedgwick County, Colorado
|
548.0
|
| 58 |
Ouray County, Colorado
|
541.6
|
| 59 |
Clear Creek County, Colorado
|
395.2
|
| 60 |
San Juan County, Colorado
|
387.5
|
| 61 |
Lake County, Colorado
|
376.9
|
| 62 |
Denver County, Colorado
|
153
|
| 63 |
Gilpin County, Colorado
|
149.9
|
| 64 |
Broomfield County, Colorado
|
33.0
|