Colorado public school districts ranked by the highest county-wide student-to-teacher ratio. Counties need at least 3 schools and 1,000 students to qualify.
| # | County | State | Ratio |
|---|---|---|---|
| 1 | Pueblo County | CO | 19.4:1 |
| 2 | Adams County | CO | 18.1:1 |
| 3 | Arapahoe County | CO | 17.8:1 |
| 4 | Broomfield County | CO | 17.7:1 |
| 5 | Douglas County | CO | 17.7:1 |
| 6 | Weld County | CO | 17.6:1 |
| 7 | Boulder County | CO | 17.0:1 |
| 8 | Montrose County | CO | 16.9:1 |
| 9 | Delta County | CO | 16.8:1 |
| 10 | Jefferson County | CO | 16.8:1 |
| 11 | Mesa County | CO | 16.3:1 |
| 12 | Larimer County | CO | 15.9:1 |
| 13 | El Paso County | CO | 15.7:1 |
| 14 | Garfield County | CO | 15.7:1 |
| 15 | Morgan County | CO | 15.5:1 |
| 16 | Denver County | CO | 15.1:1 |
| 17 | Fremont County | CO | 15.1:1 |
| 18 | Gunnison County | CO | 14.8:1 |
| 19 | Teller County | CO | 14.7:1 |
| 20 | Montezuma County | CO | 14.5:1 |
| 21 | Logan County | CO | 14.4:1 |
| 22 | Park County | CO | 14.4:1 |
| 23 | Las Animas County | CO | 14.3:1 |
| 24 | Archuleta County | CO | 14.1:1 |
| 25 | Alamosa County | CO | 14.0:1 |
| 26 | Elbert County | CO | 14.0:1 |
| 27 | Conejos County | CO | 13.8:1 |
| 28 | Moffat County | CO | 13.5:1 |
| 29 | Prowers County | CO | 13.5:1 |
| 30 | Rio Blanco County | CO | 13.4:1 |
| 31 | Chaffee County | CO | 13.1:1 |
| 32 | Pitkin County | CO | 13.1:1 |
| 33 | Summit County | CO | 13.1:1 |
| 34 | Routt County | CO | 12.9:1 |
| 35 | Yuma County | CO | 12.9:1 |
| 36 | Eagle County | CO | 12.7:1 |
| 37 | La Plata County | CO | 12.7:1 |
| 38 | Grand County | CO | 12.5:1 |
| 39 | Kit Carson County | CO | 12.5:1 |
| 40 | Otero County | CO | 12.5:1 |
| 41 | Rio Grande County | CO | 11.8:1 |