Member
Population
Miles
Size
ColoradoColorado has 64 Counties.
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Colorado Data Sets Colorado Links |
Colorado Counties, Inc. 800 Grant Street, Suite 500 Denver, CO 80203 Phone: (303)861-4076 Fax: (303)861-2818 http://www.ccionline.org
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| County | NACo Member |
2010 Population |
Square Miles |
County Seat | Board Size |
Founded |
|---|---|---|---|---|---|---|
| Adams | |
441,603 | 1,168 | Brighton | 3 | 1901 |
| Alamosa | |
15,445 | 723 | Alamosa | 3 | 1913 |
| Arapahoe | |
572,003 | 798 | Littleton | 5 | 1861 |
| Archuleta | |
12,084 | 1,350 | Pagosa Springs | 3 | 1885 |
| Baca | |
3,788 | 2,555 | Springfield | 3 | 1889 |
| Bent | |
6,499 | 1,513 | Las Animas | 3 | 1870 |
| Boulder | |
294,567 | 726 | Boulder | 3 | 1861 |
| Broomfield | |
55,889 | 33 | Broomfield | 9 | 2001 |
| Chaffee | |
17,809 | 1,013 | Salida | 3 | 1861 |
| Cheyenne | 1,836 | 1,778 | Cheyenne Wells | 3 | 1889 | |
| Clear Creek | |
9,088 | 395 | Georgetown | 3 | 1861 |
| Conejos | |
8,256 | 1,287 | Conejos | 3 | 1861 |
| Costilla | |
3,524 | 1,227 | San Luis | 3 | 1861 |
| Crowley | |
5,823 | 787 | Ordway | 3 | 1911 |
| Custer | |
4,255 | 739 | Westcliffe | 3 | 1877 |
| Delta | |
30,952 | 1,142 | Delta | 3 | 1883 |
| Denver * | |
600,158 | 153 | Denver | 13 | 1901 |
| Dolores | |
2,064 | 1,067 | Dove Creek | 3 | 1881 |
| Douglas | |
285,465 | 840 | Castle Rock | 3 | 1861 |
| Eagle | |
52,197 | 1,685 | Eagle | 3 | 1883 |
| El Paso | |
622,263 | 2,127 | Colorado Springs | 5 | 1861 |
| Elbert | 23,086 | 1,851 | Kiowa | 3 | 1874 | |
| Fremont | |
46,824 | 1,533 | Canon City | 3 | 1861 |
| Garfield | |
56,389 | 2,948 | Glenwood Springs | 3 | 1883 |
| Gilpin | |
5,441 | 150 | Central City | 3 | 1861 |
| Grand | |
14,843 | 1,846 | Hot Sulphur Springs | 3 | 1874 |
| Gunnison | |
15,324 | 3,239 | Gunnison | 3 | 1877 |
| Hinsdale | |
843 | 1,117 | Lake City | 3 | 1874 |
| Huerfano | |
6,711 | 1,591 | Walsenburg | 3 | 1861 |
| Jackson | |
1,394 | 1,614 | Walden | 3 | 1909 |
| Jefferson | |
534,543 | 764 | Golden | 3 | 1861 |
| Kiowa | |
1,398 | 1,768 | Eads | 3 | 1889 |
| Kit Carson | |
8,270 | 2,161 | Burlington | 3 | 1889 |
| La Plata | |
51,334 | 1,692 | Durango | 3 | 1874 |
| Lake | 7,310 | 377 | Leadville | 3 | 1861 | |
| Larimer | |
299,630 | 2,596 | Fort Collins | 3 | 1861 |
| Las Animas | |
15,507 | 4,773 | Trinidad | 3 | 1866 |
| Lincoln | |
5,467 | 2,578 | Hugo | 3 | 1889 |
| Logan | 22,709 | 1,839 | Sterling | 3 | 1887 | |
| Mesa | |
146,723 | 3,329 | Grand Junction | 3 | 1883 |
| Mineral | |
712 | 876 | Creede | 3 | 1893 |
| Moffat | |
13,795 | 4,743 | Craig | 3 | 1911 |
| Montezuma | |
25,535 | 2,030 | Cortez | 3 | 1889 |
| Montrose | |
41,276 | 2,241 | Montrose | 3 | 1883 |
| Morgan | |
28,159 | 1,280 | Fort Morgan | 3 | 1889 |
| Otero | |
18,831 | 1,262 | La Junta | 3 | 1889 |
| Ouray | |
4,436 | 542 | Ouray | 3 | 1877 |
| Park | |
16,206 | 2,194 | Fairplay | 3 | 1861 |
| Phillips | |
4,442 | 688 | Holyoke | 3 | 1889 |
| Pitkin | |
17,148 | 971 | Aspen | 5 | 1881 |
| Prowers | |
12,551 | 1,638 | Lamar | 3 | 1889 |
| Pueblo | |
159,063 | 2,386 | Pueblo | 3 | 1866 |
| Rio Blanco | |
6,666 | 3,221 | Meeker | 3 | 1889 |
| Rio Grande | |
11,982 | 912 | Del Norte | 3 | 1874 |
| Routt | |
23,509 | 2,362 | Steamboat Springs | 3 | 1877 |
| Saguache | |
6,108 | 3,169 | Saguache | 3 | 1866 |
| San Juan | |
699 | 387 | Silverton | 3 | 1876 |
| San Miguel | |
7,359 | 1,287 | Telluride | 3 | 1861 |
| Sedgwick | |
2,379 | 548 | Julesburg | 3 | 1889 |
| Summit | |
27,994 | 608 | Breckenridge | 3 | 1861 |
| Teller | |
23,350 | 557 | Cripple Creek | 3 | 1899 |
| Washington | |
4,814 | 2,518 | Akron | 3 | 1887 |
| Weld | |
252,825 | 3,987 | Greeley | 5 | 1861 |
| Yuma | |
10,043 | 2,364 | Wray | 3 | 1889 |