Ranking of Colorado Counties By Population Density from Census 2020
According to the data from the US 2020 Census, as at April 2020, among all Colorado counties, Denver County had the highest population density per square mile (4.67K people per sqr mile), followed by Broomfield County (2.25K people per sqr mile), and Arapahoe County (821.03 people per sqr mile).
On the other hand, Hinsdale County had the lowest population density (0.71 people per sqr mile), followed by Kiowa County (0.82 people per sqr mile), and Jackson County (0.86 people per sqr mile).
The chart below shows the top 10 counties with high population density, and the table below shows the ranking of all Colorado counties.
You can also see similar ranking of counties information for other states as well as for all counties in the United States.
| Rank | County | Population Density |
|---|---|---|
| 1 | Denver County | 4674.31 |
| 2 | Broomfield County | 2248.00 |
| 3 | Arapahoe County | 821.03 |
| 4 | Jefferson County | 762.59 |
| 5 | Boulder County | 455.35 |
| 6 | Adams County | 445.32 |
| 7 | Douglas County | 426.04 |
| 8 | El Paso County | 343.49 |
| 9 | Larimer County | 138.33 |
| 10 | Weld County | 82.56 |
| 11 | Pueblo County | 70.46 |
| 12 | Summit County | 51.05 |
| 13 | Mesa County | 46.78 |
| 14 | Teller County | 44.36 |
| 15 | Gilpin County | 38.71 |
| 16 | Eagle County | 33.09 |
| 17 | La Plata County | 32.93 |
| 18 | Fremont County | 31.91 |
| 19 | Delta County | 27.31 |
| 20 | Clear Creek County | 23.79 |
| 21 | Morgan County | 22.73 |
| 22 | Alamosa County | 22.66 |
| 23 | Garfield County | 20.93 |
| 24 | Lake County | 19.73 |
| 25 | Chaffee County | 19.22 |
| 26 | Montrose County | 19.05 |
| 27 | Pitkin County | 17.88 |
| 28 | Otero County | 14.81 |
| 29 | Elbert County | 14.08 |
| 30 | Montezuma County | 12.74 |
| 31 | Rio Grande County | 12.65 |
| 32 | Logan County | 11.71 |
| 33 | Routt County | 10.51 |
| 34 | Archuleta County | 9.90 |
| 35 | Ouray County | 9.02 |
| 36 | Grand County | 8.51 |
| 37 | Park County | 7.93 |
| 38 | Crowley County | 7.52 |
| 39 | Prowers County | 7.32 |
| 40 | Phillips County | 6.59 |
| 41 | Custer County | 6.37 |
| 42 | San Miguel County | 6.27 |
| 43 | Conejos County | 5.80 |
| 44 | Gunnison County | 5.22 |
| 45 | Sedgwick County | 4.39 |
| 46 | Huerfano County | 4.29 |
| 47 | Yuma County | 4.22 |
| 48 | Bent County | 3.74 |
| 49 | Kit Carson County | 3.28 |
| 50 | Las Animas County | 3.05 |
| 51 | Costilla County | 2.85 |
| 52 | Moffat County | 2.80 |
| 53 | Lincoln County | 2.20 |
| 54 | Dolores County | 2.18 |
| 55 | Rio Blanco County | 2.03 |
| 56 | Saguache County | 2.01 |
| 57 | Washington County | 1.91 |
| 58 | San Juan County | 1.82 |
| 59 | Baca County | 1.37 |
| 60 | Mineral County | 0.99 |
| 61 | Cheyenne County | 0.98 |
| 62 | Jackson County | 0.86 |
| 63 | Kiowa County | 0.82 |
| 64 | Hinsdale County | 0.71 |