County Population Area Biden Adams 442 1182 57.5 Arapahoe 572 804 62.3 Archuleta 12 1355 41.3 Baca 4 2558 14.3 Bent 6 1541 35 Boulder 295 740 83.5 Broomfield 56 34 64.6 Chaffee 18 1014 52.6 Cheyenne 2 1782 11.5 ClearCreek 9 397 56.7 Conejos 8 1290 45.8 Costilla 4 1229 64.8 Crowley 6 800 24.7 Custer 4 739 37.4 Delta 31 1149 31.3 Denver 600 156 83 Dolores 2 1077 22.5 Douglas 285 842 46 Eagle 52 1701 64.5 Elbert 23 1849 24.7 ElPaso 622 2129 44.8 Fremont 47 1533 32.5 Garfield 56 2958 52.5 Gilpin 5 150 58.7 Grand 15 1869 53.7 Gunnison 15 3259 64.8 Huerfano 7 1592 47.2 Jackson 1 1620 19.8 Jefferson 535 773 59.1 Kiowa 1 1786 10.9 KitCarson 8 2162 17 Lake 7 384 58.2 LaPlata 51 1700 58.6 Larimer 300 2632 57.7 LasAnimas 16 4773 44.7 Lincoln 5 2585 17.8 Logan 23 1845 22 Mesa 147 3346 36 Mineral 1 878 42 Moffat 14 4756 16.9 Montezuma 26 2036 41.3 Montrose 41 2246 34 Morgan 28 1294 28.2 Otero 19 1268 38.5 Ouray 4 542 59.5 Park 16 2209 42.4 Phillips 4 688 19.4 Pitkin 17 970 80 Prowers 13 1645 26.2 Pueblo 159 2397 51.6 RioBlanco 7 3226 15.7 RioGrande 12 913 39.6 Routt 24 2362 64.7 Saguache 6 3168 56.5 SanJuan 699 389 60.9 SanMiguel 7 1291 78.7 Sedgwick 2 549 20.6 Summit 28 619 70.2 Teller 23 559 35.4 Weld 253 4014 41.3 Yuma 10 2370 16.4