| Rank |
County |
Percentage with High School Diploma |
| 1 |
Mineral County, Colorado
|
97.6%
|
| 2 |
Douglas County, Colorado
|
97.5%
|
| 3 |
Routt County, Colorado
|
97.3%
|
| 4 |
Ouray County, Colorado
|
96.9%
|
| 5 |
Elbert County, Colorado
|
96.8%
|
| 6 |
Clear Creek County, Colorado
|
96.5%
|
| 7 |
San Miguel County, Colorado
|
95.7%
|
| 8 |
Pitkin County, Colorado
|
95.5%
|
| 9 |
Hinsdale County, Colorado
|
95.1%
|
| 10 |
Broomfield County, Colorado
|
94.9%
|
| 11 |
Park County, Colorado
|
94.8%
|
| 12 |
Summit County, Colorado
|
94.7%
|
| 13 |
Custer County, Colorado
|
94.4%
|
| 14 |
Grand County, Colorado
|
94.3%
|
| 15 |
Gilpin County, Colorado
|
94.1%
|
| 16 |
Teller County, Colorado
|
94.1%
|
| 17 |
La Plata County, Colorado
|
93.9%
|
| 18 |
Larimer County, Colorado
|
93.9%
|
| 19 |
Boulder County, Colorado
|
93.7%
|
| 20 |
Rio Blanco County, Colorado
|
93.3%
|
| 21 |
Jefferson County, Colorado
|
93.2%
|
| 22 |
El Paso County, Colorado
|
92.8%
|
| 23 |
Gunnison County, Colorado
|
92.7%
|
| 24 |
Archuleta County, Colorado
|
92.1%
|
| 25 |
Kiowa County, Colorado
|
91.2%
|
| 26 |
Chaffee County, Colorado
|
90.7%
|
| 27 |
San Juan County, Colorado
|
90.6%
|
| 28 |
Arapahoe County, Colorado
|
90.6%
|
| 29 |
Jackson County, Colorado
|
90.1%
|
| 30 |
Mesa County, Colorado
|
89.8%
|
| 31 |
Montezuma County, Colorado
|
89.2%
|
| 32 |
Dolores County, Colorado
|
88.1%
|
| 33 |
Eagle County, Colorado
|
87.8%
|
| 34 |
Logan County, Colorado
|
87.5%
|
| 35 |
Alamosa County, Colorado
|
87.1%
|
| 36 |
Delta County, Colorado
|
87.0%
|
| 37 |
Washington County, Colorado
|
87.0%
|
| 38 |
Moffat County, Colorado
|
86.5%
|
| 39 |
Yuma County, Colorado
|
86.4%
|
| 40 |
Phillips County, Colorado
|
85.8%
|
| 41 |
Baca County, Colorado
|
85.7%
|
| 42 |
Pueblo County, Colorado
|
85.7%
|
| 43 |
Garfield County, Colorado
|
85.3%
|
| 44 |
Sedgwick County, Colorado
|
85.2%
|
| 45 |
Weld County, Colorado
|
85.2%
|
| 46 |
Rio Grande County, Colorado
|
85.2%
|
| 47 |
Denver County, Colorado
|
84.7%
|
| 48 |
Montrose County, Colorado
|
84.6%
|
| 49 |
Cheyenne County, Colorado
|
84.1%
|
| 50 |
Fremont County, Colorado
|
83.9%
|
| 51 |
Kit Carson County, Colorado
|
83.8%
|
| 52 |
Las Animas County, Colorado
|
83.5%
|
| 53 |
Huerfano County, Colorado
|
83.2%
|
| 54 |
Conejos County, Colorado
|
82.0%
|
| 55 |
Adams County, Colorado
|
81.5%
|
| 56 |
Prowers County, Colorado
|
80.9%
|
| 57 |
Lake County, Colorado
|
80.8%
|
| 58 |
Otero County, Colorado
|
80.6%
|
| 59 |
Lincoln County, Colorado
|
79.9%
|
| 60 |
Bent County, Colorado
|
78.4%
|
| 61 |
Morgan County, Colorado
|
78.1%
|
| 62 |
Saguache County, Colorado
|
77.3%
|
| 63 |
Costilla County, Colorado
|
75.8%
|
| 64 |
Crowley County, Colorado
|
68.9%
|