USA: Colorado
Counties
The population of all counties in Colorado by census years.
| Name | Status | Population Census 1990-04-01 | Population Census 2000-04-01 | Population Census 2010-04-01 | |
|---|---|---|---|---|---|
| Adams | County | 265,038 | 348,076 | 441,603 | → |
| Alamosa | County | 13,617 | 14,965 | 15,445 | → |
| Arapahoe | County | 391,572 | 488,829 | 572,003 | → |
| Archuleta | County | 5,345 | 9,894 | 12,084 | → |
| Baca | County | 4,556 | 4,517 | 3,788 | → |
| Bent | County | 5,048 | 5,996 | 6,499 | → |
| Boulder | County | 225,339 | 269,784 | 294,567 | → |
| Broomfield (← Adams, Boulder, Jefferson & Weld) | County | ... | 39,202 | 55,889 | → |
| Chaffee | County | 12,684 | 16,250 | 17,809 | → |
| Cheyenne | County | 2,397 | 2,229 | 1,836 | → |
| Clear Creek | County | 7,619 | 9,263 | 9,088 | → |
| Conejos | County | 7,453 | 8,400 | 8,256 | → |
| Costilla | County | 3,190 | 3,661 | 3,524 | → |
| Crowley | County | 3,946 | 5,514 | 5,823 | → |
| Custer | County | 1,926 | 3,508 | 4,255 | → |
| Delta | County | 20,980 | 27,824 | 30,952 | → |
| Denver | County | 467,549 | 553,805 | 600,158 | → |
| Dolores | County | 1,504 | 1,844 | 2,064 | → |
| Douglas | County | 60,391 | 175,732 | 285,465 | → |
| Eagle | County | 21,928 | 41,623 | 52,197 | → |
| El Paso | County | 397,014 | 516,934 | 622,263 | → |
| Elbert | County | 9,646 | 19,855 | 23,086 | → |
| Fremont | County | 32,273 | 46,140 | 46,824 | → |
| Garfield | County | 29,974 | 43,786 | 56,389 | → |
| Gilpin | County | 3,070 | 4,746 | 5,441 | → |
| Grand | County | 7,966 | 12,433 | 14,843 | → |
| Gunnison | County | 10,273 | 14,000 | 15,324 | → |
| Hinsdale | County | 467 | 792 | 843 | → |
| Huerfano | County | 6,009 | 7,859 | 6,711 | → |
| Jackson | County | 1,605 | 1,577 | 1,394 | → |
| Jefferson | County | 438,430 | 525,449 | 534,543 | → |
| Kiowa | County | 1,688 | 1,622 | 1,398 | → |
| Kit Carson | County | 7,140 | 8,013 | 8,270 | → |
| La Plata | County | 32,284 | 43,957 | 51,334 | → |
| Lake | County | 6,007 | 7,814 | 7,310 | → |
| Larimer | County | 186,136 | 251,489 | 299,630 | → |
| Las Animas | County | 13,765 | 15,212 | 15,507 | → |
| Lincoln | County | 4,529 | 6,089 | 5,467 | → |
| Logan | County | 17,567 | 20,566 | 22,709 | → |
| Mesa | County | 93,145 | 116,939 | 146,723 | → |
| Mineral | County | 558 | 831 | 712 | → |
| Moffat | County | 11,357 | 13,178 | 13,795 | → |
| Montezuma | County | 18,672 | 23,822 | 25,535 | → |
| Montrose | County | 24,423 | 33,438 | 41,276 | → |
| Morgan | County | 21,939 | 27,172 | 28,159 | → |
| Otero | County | 20,185 | 20,311 | 18,831 | → |
| Ouray | County | 2,295 | 3,747 | 4,436 | → |
| Park | County | 7,174 | 14,519 | 16,206 | → |
| Phillips | County | 4,189 | 4,485 | 4,442 | → |
| Pitkin | County | 12,661 | 14,889 | 17,148 | → |
| Prowers | County | 13,347 | 14,483 | 12,551 | → |
| Pueblo | County | 123,051 | 141,490 | 159,063 | → |
| Rio Blanco | County | 6,051 | 5,992 | 6,666 | → |
| Rio Grande | County | 10,770 | 12,425 | 11,982 | → |
| Routt | County | 14,088 | 19,679 | 23,509 | → |
| Saguache | County | 4,619 | 5,904 | 6,108 | → |
| San Juan | County | 745 | 558 | 699 | → |
| San Miguel | County | 3,653 | 6,593 | 7,359 | → |
| Sedgwick | County | 2,690 | 2,747 | 2,379 | → |
| Summit | County | 12,881 | 23,560 | 27,994 | → |
| Teller | County | 12,468 | 20,541 | 23,350 | → |
| Washington | County | 4,812 | 4,922 | 4,814 | → |
| Weld | County | 131,821 | 180,766 | 252,825 | → |
| Yuma | County | 8,954 | 9,846 | 10,043 | → |
| Colorado | State | 3,294,473 | 4,302,086 | 5,029,196 |
Contents: Places
The population of all places in Colorado by census years.
icon links to further information about a selected place including its population structure (gender, age groups, age distribution, »race«, ethnicity).| Name | Status | County | Population Census 1990-04-01 | Population Census 2000-04-01 | Population Census 2010-04-01 | |
|---|---|---|---|---|---|---|
| Acres Green | Census-Designated Place | Douglas | ... | 3,205 | 3,007 | → |
| Aetna Estates | Census-Designated Place | Arapahoe | ... | ... | 834 | → |
| Aguilar | Town | Las Animas | 527 | 600 | 538 | → |
| Air Force Academy | Census-Designated Place | El Paso | 9,062 | 7,526 | 6,680 | → |
| Akron | Town | Washington | 1,621 | 1,736 | 1,702 | → |
| Alamosa | City | Alamosa | ... | 8,456 | 8,780 | → |
| Alamosa East | Census-Designated Place | Alamosa | 1,389 | 1,528 | 1,458 | → |
| Allenspark | Census-Designated Place | Boulder | ... | ... | 528 | → |
| Alma | Town | Park | ... | 205 | 270 | → |
| Alpine | Census-Designated Place | Rio Grande | ... | ... | 174 | → |
| Altona | Census-Designated Place | Boulder | ... | ... | 501 | → |
| Amherst | Census-Designated Place | Phillips | ... | ... | 58 | → |
| Antonito | Town | Conejos | ... | 910 | 781 | → |
| Applewood | Census-Designated Place | Jefferson | ... | ... | 7,160 | → |
| Arboles | Census-Designated Place | Archuleta | ... | 232 | 280 | → |
| Aristocrat Ranchettes | Census-Designated Place | Weld | ... | 1,254 | 1,344 | → |
| Arriba | Town | Lincoln | 218 | 244 | 193 | → |
| Arvada | City | Jefferson / Adams | 89,786 | 102,383 | 106,433 | → |
| Aspen | City | Pitkin | 5,181 | 6,054 | 6,658 | → |
| Aspen Park | Census-Designated Place | Jefferson | ... | ... | 882 | → |
| Atwood | Census-Designated Place | Logan | ... | ... | 133 | → |
| Ault | Town | Weld | 946 | 1,451 | 1,519 | → |
| Aurora | City | Douglas / Adams / Arapahoe | 221,855 | 275,687 | 325,078 | → |
| Avon | Town | Eagle | 1,783 | 5,516 | 6,447 | → |
| Avondale | Census-Designated Place | Pueblo | ... | ... | 674 | → |
| Bark Ranch | Census-Designated Place | Boulder | ... | ... | 213 | → |
| Basalt | Town | Pitkin / Eagle | 1,282 | 2,884 | 3,857 | → |
| Battlement Mesa | Census-Designated Place | Garfield | ... | ... | 4,471 | → |
| Bayfield | Town | La Plata | 1,106 | 1,596 | 2,333 | → |
| Bennett | Town | Adams / Arapahoe | 1,769 | 2,057 | 2,308 | → |
| Berkley | Census-Designated Place | Adams | ... | ... | 11,207 | → |
| Berthoud | Town | Weld / Larimer | 3,087 | 4,944 | 5,105 | → |
| Bethune | Town | Kit Carson | 178 | 221 | 237 | → |
| Beulah Valley | Census-Designated Place | Pueblo | ... | ... | 556 | → |
| Black Forest | Census-Designated Place | El Paso | ... | ... | 13,116 | → |
| Black Hawk | City | Gilpin | ... | 137 | 118 | → |
| Blanca | Town | Costilla | 272 | 394 | 385 | → |
| Blende | Census-Designated Place | Pueblo | ... | ... | 878 | → |
| Blue River | Town | Summit | 438 | 703 | 849 | → |
| Blue Sky | Census-Designated Place | Morgan | ... | ... | 24 | → |
| Bonanza | Town | Saguache | ... | 10 | 16 | → |
| Bonanza Mountain Estates | Census-Designated Place | Boulder | ... | ... | 128 | → |
| Boone | Town | Pueblo | ... | 391 | 339 | → |
| Boulder | City | Boulder | 86,098 | 94,213 | 97,385 | → |
| Bow Mar | Town | Jefferson / Arapahoe | 853 | 847 | 866 | → |
| Brandon | Census-Designated Place | Kiowa | ... | ... | 21 | → |
| Branson | Town | Las Animas | 58 | 77 | 74 | → |
| Breckenridge | Town | Summit | ... | 2,855 | 4,540 | → |
| Brick Center | Census-Designated Place | Arapahoe | ... | ... | 107 | → |
| Brighton | City | Weld / Adams | 14,292 | 21,044 | 33,352 | → |
| Brookside | Town | Fremont | 221 | 217 | 233 | → |
| Broomfield | City | Broomfield | 24,966 | 39,202 | 55,889 | → |
| Brush | City | Morgan | 4,136 | 5,158 | 5,463 | → |
| Buena Vista | Town | Chaffee | 1,779 | 2,225 | 2,617 | → |
| Burlington | City | Kit Carson | 2,860 | 3,738 | 4,254 | → |
| Byers | Census-Designated Place | Arapahoe | ... | ... | 1,160 | → |
| Calhan | Town | El Paso | 530 | 891 | 780 | → |
| Campo | Town | Baca | 129 | 147 | 109 | → |
| Cañon City | City | Fremont | ... | 17,190 | 16,400 | → |
| Capulin | Census-Designated Place | Conejos | ... | ... | 200 | → |
| Carbondale | Town | Garfield | 3,090 | 5,242 | 6,427 | → |
| Cascade-Chipita Park | Census-Designated Place | El Paso | 1,479 | 1,709 | 1,655 | → |
| Castle Pines | Census-Designated Place | Douglas | ... | ... | 3,614 | → |
| Castle Pines North | City | Douglas | ... | 3,587 | 10,360 | → |
| Castle Rock | Town | Douglas | 8,244 | 20,302 | 48,231 | → |
| Cathedral | Census-Designated Place | Hinsdale | ... | ... | 14 | → |
| Catherine | Census-Designated Place | Garfield | ... | ... | 228 | → |
| Cattle Creek | Census-Designated Place | Garfield | ... | ... | 641 | → |
| Cedaredge | Town | Delta | 1,413 | 1,945 | 2,253 | → |
| Centennial | City | Arapahoe | ... | 102,586 | 100,377 | → |
| Center | Town | Rio Grande / Saguache | 1,947 | 2,440 | 2,230 | → |
| Central City | City | Gilpin / Clear Creek | 335 | 527 | 663 | → |
| Chacra | Census-Designated Place | Garfield | ... | ... | 329 | → |
| Cheraw | Town | Otero | 271 | 209 | 252 | → |
| Cherry Creek | Census-Designated Place | Arapahoe | ... | ... | 11,120 | → |
| Cherry Hills Village | City | Arapahoe | 5,279 | 5,962 | 5,987 | → |
| Cheyenne Wells | Town | Cheyenne | 1,128 | 1,012 | 846 | → |
| Cimarron Hills | Census-Designated Place | El Paso | 11,160 | 15,194 | 16,161 | → |
| City of Creede | Town | Mineral | ... | 365 | 290 | → |
| Clifton | Census-Designated Place | Mesa | ... | ... | 19,889 | → |
| Coal Creek | Census-Designated Place | Gilpin / Boulder / Jefferson | ... | 2,323 | 2,400 | → |
| Coal Creek | Town | Fremont | 156 | 289 | 343 | → |
| Coaldale | Census-Designated Place | Fremont | ... | ... | 255 | → |
| Cokedale | Town | Las Animas | ... | 169 | 129 | → |
| Collbran | Town | Mesa | ... | 495 | 708 | → |
| Colona | Census-Designated Place | Ouray | ... | ... | 30 | → |
| Colorado City | Census-Designated Place | Pueblo | ... | ... | 2,193 | → |
| Colorado Springs | City | El Paso | 283,112 | 360,329 | 416,427 | → |
| Columbine | Census-Designated Place | Jefferson / Arapahoe | 23,969 | 24,095 | 24,280 | → |
| Columbine Valley | Town | Arapahoe | 1,086 | 1,145 | 1,256 | → |
| Comanche Creek | Census-Designated Place | Arapahoe | ... | ... | 369 | → |
| Commerce City | City | Adams | 16,771 | 20,921 | 45,913 | → |
| Conejos | Census-Designated Place | Conejos | ... | ... | 58 | → |
| Copper Mountain | Census-Designated Place | Summit | ... | ... | 385 | → |
| Cortez | City | Montezuma | 7,360 | 7,997 | 8,482 | → |
| Cotopaxi | Census-Designated Place | Fremont | ... | ... | 47 | → |
| Craig | City | Moffat | 8,107 | 9,245 | 9,464 | → |
| Crawford | Town | Delta | 199 | 368 | 431 | → |
| Crested Butte | Town | Gunnison | 865 | 1,541 | 1,487 | → |
| Crestone | Town | Saguache | ... | 121 | 127 | → |
| Cripple Creek | City | Teller | 580 | 1,178 | 1,189 | → |
| Crisman | Census-Designated Place | Boulder | ... | ... | 186 | → |
| Crook | Town | Logan | 159 | 133 | 110 | → |
| Crowley | Town | Crowley | 227 | 187 | 176 | → |
| Dacono | City | Weld | 2,259 | 3,120 | 4,152 | → |
| Dakota Ridge | Census-Designated Place | Jefferson | ... | ... | 32,005 | → |
| De Beque | Town | Mesa | ... | 525 | 504 | → |
| Deer Trail | Town | Arapahoe | 472 | 602 | 546 | → |
| Del Norte | Town | Rio Grande | ... | 1,909 | 1,686 | → |
| Delta | City | Delta | ... | 7,967 | 8,915 | → |
| Denver | City | Denver | 467,549 | 553,805 | 600,158 | → |
| Derby | Census-Designated Place | Adams | ... | ... | 7,685 | → |
| Dillon | Town | Summit | 553 | 825 | 904 | → |
| Dinosaur | Town | Moffat | 321 | 314 | 339 | → |
| Divide | Census-Designated Place | Teller | ... | ... | 127 | → |
| Dolores | Town | Montezuma | 866 | 917 | 936 | → |
| Dotsero | Census-Designated Place | Eagle | ... | ... | 705 | → |
| Dove Creek | Town | Dolores | 652 | 718 | 735 | → |
| Dove Valley | Census-Designated Place | Arapahoe | ... | ... | 5,243 | → |
| Downieville-Lawson-Dumont | Census-Designated Place | Clear Creek | ... | ... | 594 | → |
| Durango | City | La Plata | ... | 14,518 | 16,887 | → |
| Eads | Town | Kiowa | 784 | 747 | 609 | → |
| Eagle | Town | Eagle | 1,646 | 3,105 | 6,508 | → |
| East Pleasant View | Census-Designated Place | Jefferson | ... | ... | 356 | → |
| Eaton | Town | Weld | 2,044 | 2,783 | 4,365 | → |
| Eckley | Town | Yuma | ... | 288 | 257 | → |
| Edgewater | City | Jefferson | 4,606 | 5,433 | 5,170 | → |
| Edwards | Census-Designated Place | Eagle | ... | ... | 10,266 | → |
| El Jebel | Census-Designated Place | Eagle | ... | ... | 3,801 | → |
| El Moro | Census-Designated Place | Las Animas | ... | ... | 221 | → |
| Elbert | Census-Designated Place | Elbert | ... | ... | 230 | → |
| Eldora | Census-Designated Place | Boulder | ... | 170 | 142 | → |
| Eldorado Springs | Census-Designated Place | Boulder | ... | ... | 585 | → |
| Elizabeth | Town | Elbert | ... | 1,485 | 1,358 | → |
| Ellicott | Census-Designated Place | El Paso | ... | ... | 1,131 | → |
| Empire | Town | Clear Creek | 413 | 348 | 282 | → |
| Englewood | City | Arapahoe | 29,905 | 31,943 | 30,255 | → |
| Erie | Town | Weld / Boulder | 1,263 | 6,420 | 18,135 | → |
| Estes Park | Town | Larimer | 3,305 | 5,605 | 5,858 | → |
| Evans | City | Weld | ... | 9,805 | 18,537 | → |
| Evergreen | Census-Designated Place | Jefferson | ... | 9,216 | 9,038 | → |
| Fairmount | Census-Designated Place | Jefferson | ... | ... | 7,559 | → |
| Fairplay | Town | Park | 388 | 598 | 679 | → |
| Federal Heights | City | Adams | 9,341 | 12,062 | 11,467 | → |
| Firestone | Town | Weld | ... | 2,359 | 10,147 | → |
| Flagler | Town | Kit Carson | 547 | 619 | 561 | → |
| Fleming | Town | Logan | 350 | 426 | 408 | → |
| Florence | City | Fremont | 3,030 | 3,772 | 3,881 | → |
| Florissant | Census-Designated Place | Teller | ... | ... | 104 | → |
| Floyd Hill | Census-Designated Place | Clear Creek | ... | ... | 998 | → |
| Fort Carson | Census-Designated Place | El Paso | ... | ... | 13,813 | → |
| Fort Collins | City | Larimer | 88,899 | 121,591 | 143,986 | → |
| Fort Garland | Census-Designated Place | Costilla | ... | ... | 433 | → |
| Fort Lupton | City | Weld | ... | 6,989 | 7,377 | → |
| Fort Morgan | City | Morgan | 9,174 | 11,081 | 11,315 | → |
| Fountain | City | El Paso | 11,051 | 15,235 | 25,846 | → |
| Fowler | Town | Otero | 1,176 | 1,228 | 1,182 | → |
| Foxfield | Town | Arapahoe | ... | 718 | 685 | → |
| Franktown | Census-Designated Place | Douglas | ... | ... | 395 | → |
| Fraser | Town | Grand | ... | 987 | 1,224 | → |
| Frederick | Town | Weld | ... | 2,722 | 8,679 | → |
| Frisco | Town | Summit | 1,619 | 2,547 | 2,683 | → |
| Fruita | City | Mesa | ... | 6,728 | 12,646 | → |
| Fruitvale | Census-Designated Place | Mesa | ... | ... | 7,675 | → |
| Fulford | Census-Designated Place | Eagle | ... | ... | 2 | → |
| Garden City | Town | Weld | 174 | 351 | 234 | → |
| Garfield | Census-Designated Place | Chaffee | ... | ... | 15 | → |
| Genesee | Census-Designated Place | Jefferson | 2,737 | 3,699 | 3,609 | → |
| Genoa | Town | Lincoln | 167 | 211 | 139 | → |
| Georgetown | Town | Clear Creek | 891 | 1,114 | 1,034 | → |
| Gerrard | Census-Designated Place | Rio Grande | ... | ... | 278 | → |
| Gilcrest | Town | Weld | 775 | 1,154 | 1,034 | → |
| Glendale | City | Arapahoe | ... | 4,302 | 4,184 | → |
| Glendale | Census-Designated Place | Boulder | ... | ... | 69 | → |
| Gleneagle | Census-Designated Place | El Paso | ... | 4,246 | 6,611 | → |
| Glenwood Springs | City | Garfield | 6,576 | 7,976 | 9,614 | → |
| Gold Hill | Census-Designated Place | Boulder | ... | 210 | 230 | → |
| Golden | City | Jefferson | 12,914 | 17,147 | 18,867 | → |
| Goldfield | Census-Designated Place | Teller | ... | ... | 49 | → |
| Granada | Town | Prowers | 520 | 647 | 517 | → |
| Granby | Town | Grand | ... | 1,752 | 1,864 | → |
| Grand Junction | City | Mesa | ... | 44,219 | 58,566 | → |
| Grand Lake | Town | Grand | 267 | 446 | 471 | → |
| Grand View Estates | Census-Designated Place | Douglas | ... | ... | 528 | → |
| Greeley | City | Weld | 60,489 | 78,068 | 92,889 | → |
| Green Mountain Falls | Town | Teller / El Paso | ... | 779 | 640 | → |
| Greenwood Village | City | Arapahoe | ... | 11,297 | 13,925 | → |
| Grover | Town | Weld | 135 | 154 | 137 | → |
| Guffey | Census-Designated Place | Park | ... | ... | 98 | → |
| Gunbarrel | Census-Designated Place | Boulder | 9,388 | 9,435 | 9,263 | → |
| Gunnison | City | Gunnison | 4,621 | 5,446 | 5,854 | → |
| Gypsum | Town | Eagle | ... | 3,835 | 6,477 | → |
| Hartman | Town | Prowers | 110 | 111 | 81 | → |
| Hasty | Census-Designated Place | Bent | ... | ... | 144 | → |
| Haswell | Town | Kiowa | 61 | 84 | 68 | → |
| Haxtun | Town | Phillips | 968 | 990 | 946 | → |
| Hayden | Town | Routt | 1,445 | 1,664 | 1,810 | → |
| Heeney | Census-Designated Place | Summit | ... | ... | 76 | → |
| Hidden Lake | Census-Designated Place | Boulder | ... | ... | 31 | → |
| Highlands Ranch | Census-Designated Place | Douglas | ... | 70,931 | 96,713 | → |
| Hillrose | Town | Morgan | 169 | 256 | 264 | → |
| Hoehne | Census-Designated Place | Las Animas | ... | ... | 111 | → |
| Holly | Town | Prowers | 908 | 1,047 | 802 | → |
| Holly Hills | Census-Designated Place | Arapahoe | ... | ... | 2,521 | → |
| Holyoke | City | Phillips | 1,934 | 2,268 | 2,313 | → |
| Hooper | Town | Alamosa | 112 | 123 | 103 | → |
| Hot Sulphur Springs | Town | Grand | 344 | 518 | 663 | → |
| Hotchkiss | Town | Delta | ... | 1,098 | 944 | → |
| Howard | Census-Designated Place | Fremont | ... | ... | 723 | → |
| Hudson | Town | Weld | 961 | 1,704 | 2,356 | → |
| Hugo | Town | Lincoln | 623 | 864 | 730 | → |
| Idaho Springs | City | Clear Creek | ... | 1,978 | 1,717 | → |
| Idalia | Census-Designated Place | Yuma | ... | ... | 88 | → |
| Idledale | Census-Designated Place | Jefferson | ... | ... | 252 | → |
| Ignacio | Town | La Plata | ... | 803 | 697 | → |
| Iliff | Town | Logan | 174 | 213 | 266 | → |
| Indian Hills | Census-Designated Place | Jefferson | ... | 1,197 | 1,280 | → |
| Inverness | Census-Designated Place | Arapahoe | ... | ... | 1,532 | → |
| Jackson Lake | Census-Designated Place | Morgan | ... | ... | 154 | → |
| Jamestown | Town | Boulder | ... | 269 | 274 | → |
| Jansen | Census-Designated Place | Las Animas | ... | ... | 112 | → |
| Joes | Census-Designated Place | Yuma | ... | ... | 80 | → |
| Johnson Village | Census-Designated Place | Chaffee | ... | ... | 246 | → |
| Johnstown | Town | Weld / Larimer | ... | 4,430 | 9,887 | → |
| Julesburg | Town | Sedgwick | 1,279 | 1,473 | 1,225 | → |
| Keenesburg | Town | Weld | 549 | 893 | 1,127 | → |
| Ken Caryl | Census-Designated Place | Jefferson | 24,391 | 30,887 | 32,438 | → |
| Kersey | Town | Weld | ... | 1,500 | 1,454 | → |
| Keystone | Census-Designated Place | Summit | ... | 825 | 1,079 | → |
| Kim | Town | Las Animas | ... | 79 | 74 | → |
| Kiowa | Town | Elbert | 300 | 627 | 723 | → |
| Kirk | Census-Designated Place | Yuma | ... | ... | 59 | → |
| Kit Carson | Town | Cheyenne | 324 | 265 | 233 | → |
| Kittredge | Census-Designated Place | Jefferson | ... | 954 | 1,304 | → |
| Kremmling | Town | Grand | ... | 1,467 | 1,444 | → |
| La Jara | Town | Conejos | 793 | 869 | 818 | → |
| La Junta | City | Otero | 7,708 | 7,595 | 7,077 | → |
| La Junta Gardens | Census-Designated Place | Otero | ... | ... | 153 | → |
| La Salle | Town | Weld | 1,874 | 1,865 | 1,955 | → |
| La Veta | Town | Huerfano | 733 | 924 | 800 | → |
| Lafayette | City | Boulder | 14,866 | 23,145 | 24,453 | → |
| Laird | Census-Designated Place | Yuma | ... | ... | 47 | → |
| Lake City | Town | Hinsdale | 241 | 380 | 408 | → |
| Lakeside | Town | Jefferson | 11 | 20 | 8 | → |
| Lakewood | City | Jefferson | 126,156 | 143,945 | 142,980 | → |
| Lamar | City | Prowers | 8,392 | 8,907 | 7,804 | → |
| Laporte | Census-Designated Place | Larimer | ... | 2,691 | 2,450 | → |
| Larkspur | Town | Douglas | ... | 260 | 183 | → |
| Las Animas | City | Bent | 2,520 | 2,797 | 2,410 | → |
| Lazy Acres | Census-Designated Place | Boulder | ... | ... | 920 | → |
| Leadville | City | Lake | 2,696 | 2,830 | 2,602 | → |
| Leadville North | Census-Designated Place | Lake | 1,757 | 1,942 | 1,794 | → |
| Lewis | Census-Designated Place | Montezuma | ... | ... | 302 | → |
| Leyner | Census-Designated Place | Boulder | ... | ... | 29 | → |
| Limon | Town | Lincoln | ... | 2,247 | 1,880 | → |
| Lincoln Park | Census-Designated Place | Fremont | 3,728 | 3,904 | 3,546 | → |
| Littleton | City | Douglas / Jefferson / Arapahoe | 33,789 | 40,178 | 41,737 | → |
| Lochbuie | Town | Weld / Adams | 1,168 | 2,115 | 4,726 | → |
| Log Lane Village | Town | Morgan | ... | 1,059 | 873 | → |
| Loghill Village | Census-Designated Place | Ouray | ... | 311 | 521 | → |
| Loma | Census-Designated Place | Mesa | ... | ... | 1,293 | → |
| Lone Tree | City | Douglas | ... | 6,880 | 10,218 | → |
| Longmont | City | Weld / Boulder | 52,214 | 71,564 | 86,270 | → |
| Louisville | City | Boulder | 12,543 | 18,928 | 18,376 | → |
| Louviers | Census-Designated Place | Douglas | ... | ... | 269 | → |
| Loveland | City | Larimer | 37,511 | 51,368 | 66,859 | → |
| Lynn | Census-Designated Place | Las Animas | ... | ... | 12 | → |
| Lyons | Town | Boulder | 1,282 | 1,584 | 2,033 | → |
| Manassa | Town | Conejos | 1,042 | 1,039 | 991 | → |
| Mancos | Town | Montezuma | 839 | 1,207 | 1,336 | → |
| Manitou Springs | City | El Paso | 4,540 | 4,985 | 4,992 | → |
| Manzanola | Town | Otero | 451 | 515 | 434 | → |
| Marble | Town | Gunnison | 60 | 111 | 131 | → |
| Maybell | Census-Designated Place | Moffat | ... | ... | 72 | → |
| Maysville | Census-Designated Place | Chaffee | ... | ... | 135 | → |
| McCoy | Census-Designated Place | Eagle | ... | ... | 24 | → |
| Mead | Town | Weld | ... | 2,257 | 3,405 | → |
| Meeker | Town | Rio Blanco | 2,110 | 2,277 | 2,475 | → |
| Meridian | Census-Designated Place | Douglas | ... | ... | 2,970 | → |
| Merino | Town | Logan | ... | 236 | 284 | → |
| Midland | Census-Designated Place | Teller | ... | ... | 156 | → |
| Milliken | Town | Weld | 1,636 | 3,015 | 5,610 | → |
| Minturn | Town | Eagle | 1,086 | 1,065 | 1,027 | → |
| Moffat | Town | Saguache | 67 | 113 | 116 | → |
| Monte Vista | City | Rio Grande | ... | 4,687 | 4,444 | → |
| Montezuma | Town | Summit | 43 | 44 | 65 | → |
| Montrose | City | Montrose | ... | 13,179 | 19,132 | → |
| Monument | Town | El Paso | 1,047 | 1,926 | 5,530 | → |
| Morgan Heights | Census-Designated Place | Morgan | ... | ... | 266 | → |
| Morrison | Town | Jefferson | 517 | 440 | 428 | → |
| Mount Crested Butte | Town | Gunnison | 336 | 714 | 801 | → |
| Mountain Meadows | Census-Designated Place | Boulder | ... | ... | 274 | → |
| Mountain View | Town | Jefferson | 550 | 569 | 507 | → |
| Mountain Village | Town | San Miguel | 60 | 972 | 1,320 | → |
| Mulford | Census-Designated Place | Garfield | ... | ... | 174 | → |
| Naturita | Town | Montrose | 438 | 642 | 546 | → |
| Nederland | Town | Boulder | 1,106 | 1,377 | 1,445 | → |
| New Castle | Town | Garfield | 710 | 1,994 | 4,518 | → |
| Niwot | Census-Designated Place | Boulder | 2,666 | 4,160 | 4,006 | → |
| No Name | Census-Designated Place | Garfield | ... | ... | 123 | → |
| Norrie | Census-Designated Place | Pitkin | ... | ... | 7 | → |
| North La Junta | Census-Designated Place | Otero | ... | ... | 512 | → |
| North Washington | Census-Designated Place | Adams | ... | 549 | 484 | → |
| Northglenn | City | Weld / Adams | 27,287 | 31,609 | 35,789 | → |
| Norwood | Town | San Miguel | 420 | 446 | 518 | → |
| Nucla | Town | Montrose | 647 | 735 | 711 | → |
| Nunn | Town | Weld | 370 | 480 | 416 | → |
| Oak Creek | Town | Routt | 664 | 825 | 884 | → |
| Olathe | Town | Montrose | 1,242 | 1,617 | 1,849 | → |
| Olney Springs | Town | Crowley | 340 | 381 | 345 | → |
| Ophir | Town | San Miguel | ... | 125 | 159 | → |
| Orchard | Census-Designated Place | Morgan | ... | ... | 90 | → |
| Orchard City | Town | Delta | 2,140 | 2,867 | 3,119 | → |
| Orchard Mesa | Census-Designated Place | Mesa | ... | ... | 6,836 | → |
| Ordway | Town | Crowley | 1,033 | 1,257 | 1,080 | → |
| Otis | Town | Washington | 462 | 545 | 475 | → |
| Ouray | City | Ouray | 647 | 815 | 1,000 | → |
| Ovid | Town | Sedgwick | 333 | 330 | 318 | → |
| Padroni | Census-Designated Place | Logan | ... | 97 | 76 | → |
| Pagosa Springs | Town | Archuleta | 1,405 | 1,592 | 1,727 | → |
| Palisade | Town | Mesa | 1,943 | 2,537 | 2,692 | → |
| Palmer Lake | Town | El Paso | 1,477 | 2,168 | 2,420 | → |
| Paoli | Town | Phillips | 29 | 42 | 34 | → |
| Paonia | Town | Delta | 1,393 | 1,533 | 1,451 | → |
| Parachute | Town | Garfield | 661 | 1,014 | 1,085 | → |
| Paragon Estates | Census-Designated Place | Boulder | ... | ... | 928 | → |
| Parker | Town | Douglas | 5,625 | 23,384 | 45,297 | → |
| Parshall | Census-Designated Place | Grand | ... | ... | 47 | → |
| Peetz | Town | Logan | 169 | 228 | 238 | → |
| Penrose | Census-Designated Place | Fremont | ... | ... | 3,582 | → |
| Peoria | Census-Designated Place | Arapahoe | ... | ... | 163 | → |
| Perry Park | Census-Designated Place | Douglas | ... | ... | 1,646 | → |
| Peyton | Census-Designated Place | El Paso | ... | ... | 250 | → |
| Phippsburg | Census-Designated Place | Routt | ... | ... | 204 | → |
| Piedra | Census-Designated Place | Hinsdale | ... | ... | 28 | → |
| Pierce | Town | Weld | 822 | 899 | 834 | → |
| Pine Brook Hill | Census-Designated Place | Boulder | ... | ... | 983 | → |
| Pitkin | Town | Gunnison | 53 | 127 | 66 | → |
| Platteville | Town | Weld | 1,413 | 2,480 | 2,485 | → |
| Poncha Springs | Town | Chaffee | ... | 503 | 737 | → |
| Ponderosa Park | Census-Designated Place | Elbert | 1,640 | 3,112 | 3,232 | → |
| Portland | Census-Designated Place | Ouray | ... | ... | 135 | → |
| Pritchett | Town | Baca | 155 | 138 | 140 | → |
| Pueblo | City | Pueblo | 99,009 | 101,796 | 106,595 | → |
| Pueblo West | Census-Designated Place | Pueblo | ... | ... | 29,637 | → |
| Ramah | Town | El Paso | 108 | 121 | 123 | → |
| Rangely | Town | Rio Blanco | 2,372 | 2,092 | 2,365 | → |
| Raymer (New Raymer) | Town | Weld | 98 | 91 | 96 | → |
| Red Cliff | Town | Eagle | ... | 294 | 267 | → |
| Red Feather Lakes | Census-Designated Place | Larimer | ... | ... | 343 | → |
| Redlands | Census-Designated Place | Mesa | ... | ... | 8,685 | → |
| Redstone | Census-Designated Place | Pitkin | ... | ... | 130 | → |
| Redvale | Census-Designated Place | Montrose | ... | ... | 236 | → |
| Rico | Town | Dolores | 92 | 205 | 265 | → |
| Ridgway | Town | Ouray | ... | 755 | 924 | → |
| Rifle | City | Garfield | 5,432 | 7,014 | 9,172 | → |
| Rock Creek Park | Census-Designated Place | El Paso | ... | ... | 58 | → |
| Rockvale | Town | Fremont | 302 | 390 | 487 | → |
| Rocky Ford | City | Otero | 4,233 | 4,311 | 3,957 | → |
| Rollinsville | Census-Designated Place | Gilpin | ... | ... | 181 | → |
| Romeo | Town | Conejos | 337 | 375 | 404 | → |
| Roxborough Park | Census-Designated Place | Douglas | ... | ... | 9,099 | → |
| Rye | Town | Pueblo | 168 | 200 | 153 | → |
| Saddle Ridge | Census-Designated Place | Morgan | ... | ... | 56 | → |
| Saguache | Town | Saguache | 605 | 588 | 485 | → |
| Salida | City | Chaffee | 4,757 | 5,530 | 5,236 | → |
| Salt Creek | Census-Designated Place | Pueblo | ... | ... | 587 | → |
| San Acacio | Census-Designated Place | Costilla | ... | ... | 40 | → |
| San Luis | Town | Costilla | 808 | 737 | 629 | → |
| Sanford | Town | Conejos | 755 | 815 | 879 | → |
| Sawpit | Town | San Miguel | ... | 27 | 40 | → |
| Security-Widefield | Census-Designated Place | El Paso | ... | ... | 32,882 | → |
| Sedalia | Census-Designated Place | Douglas | ... | 211 | 206 | → |
| Sedgwick | Town | Sedgwick | 182 | 191 | 146 | → |
| Segundo | Census-Designated Place | Las Animas | ... | ... | 98 | → |
| Seibert | Town | Kit Carson | 171 | 178 | 181 | → |
| Seven Hills | Census-Designated Place | Boulder | ... | ... | 121 | → |
| Severance | Town | Weld | ... | 856 | 3,165 | → |
| Shaw Heights | Census-Designated Place | Adams | ... | ... | 5,116 | → |
| Sheridan | City | Arapahoe | 4,985 | 5,760 | 5,664 | → |
| Sheridan Lake | Town | Kiowa | ... | 56 | 88 | → |
| Sherrelwood | Census-Designated Place | Adams | 16,636 | 17,657 | 18,287 | → |
| Silt | Town | Garfield | 1,106 | 1,712 | 2,930 | → |
| Silver Cliff | Town | Custer | 319 | 537 | 587 | → |
| Silver Plume | Town | Clear Creek | 134 | 203 | 170 | → |
| Silverthorne | Town | Summit | 1,842 | 3,170 | 3,887 | → |
| Silverton | Town | San Juan | 716 | 529 | 637 | → |
| Simla | Town | Elbert | 499 | 658 | 618 | → |
| Smeltertown | Census-Designated Place | Chaffee | ... | ... | 120 | → |
| Snowmass Village | Town | Pitkin | 1,443 | 1,820 | 2,826 | → |
| Snyder | Census-Designated Place | Morgan | ... | ... | 132 | → |
| South Fork | Town | Rio Grande | ... | 532 | 386 | → |
| Southern Ute | Census-Designated Place | La Plata | ... | ... | 177 | → |
| Springfield | Town | Baca | 1,507 | 1,567 | 1,451 | → |
| St. Ann Highlands | Census-Designated Place | Boulder | ... | ... | 288 | → |
| St. Mary's | Census-Designated Place | Clear Creek | ... | ... | 283 | → |
| Starkville | Town | Las Animas | 104 | 127 | 59 | → |
| Steamboat Springs | City | Routt | 6,751 | 10,090 | 12,088 | → |
| Sterling | City | Logan | ... | 12,768 | 14,777 | → |
| Stonegate | Census-Designated Place | Douglas | ... | 6,284 | 8,962 | → |
| Stonewall Gap | Census-Designated Place | Las Animas | ... | ... | 67 | → |
| Strasburg | Census-Designated Place | Adams / Arapahoe | ... | ... | 2,447 | → |
| Stratmoor | Census-Designated Place | El Paso | 5,854 | 6,650 | 6,900 | → |
| Stratton | Town | Kit Carson | 670 | 679 | 658 | → |
| Sugar City | Town | Crowley | 252 | 279 | 258 | → |
| Sugarloaf | Census-Designated Place | Boulder | ... | ... | 261 | → |
| Sunshine | Census-Designated Place | Boulder | ... | ... | 230 | → |
| Superior | Town | Boulder / Jefferson | 276 | 9,061 | 12,483 | → |
| Swink | Town | Otero | 588 | 703 | 617 | → |
| Tabernash | Census-Designated Place | Grand | ... | ... | 417 | → |
| Tall Timber | Census-Designated Place | Boulder | ... | ... | 208 | → |
| Telluride | Town | San Miguel | ... | 2,369 | 2,325 | → |
| The Pinery | Census-Designated Place | Douglas | ... | ... | 10,517 | → |
| Thornton | City | Adams | 55,146 | 82,506 | 118,772 | → |
| Timnath | Town | Larimer | ... | 304 | 625 | → |
| Todd Creek | Census-Designated Place | Adams | ... | ... | 3,768 | → |
| Towaoc | Census-Designated Place | Montezuma | 700 | 1,097 | 1,087 | → |
| Towner | Census-Designated Place | Kiowa | ... | ... | 22 | → |
| Trail Side | Census-Designated Place | Morgan | ... | ... | 59 | → |
| Trinidad | City | Las Animas | 8,650 | 9,187 | 9,096 | → |
| Twin Lakes | Census-Designated Place | Adams | ... | 6,301 | 6,101 | → |
| Twin Lakes | Census-Designated Place | Lake | ... | ... | 171 | → |
| Two Buttes | Town | Baca | 63 | 67 | 43 | → |
| Upper Bear Creek | Census-Designated Place | Clear Creek | ... | ... | 1,059 | → |
| Vail | Town | Eagle | 3,740 | 4,690 | 5,305 | → |
| Valdez | Census-Designated Place | Las Animas | ... | ... | 47 | → |
| Valmont | Census-Designated Place | Boulder | ... | ... | 59 | → |
| Vernon | Census-Designated Place | Yuma | ... | ... | 29 | → |
| Victor | City | Teller | 270 | 442 | 397 | → |
| Vilas | Town | Baca | 105 | 107 | 114 | → |
| Vineland | Census-Designated Place | Pueblo | ... | ... | 251 | → |
| Vona | Town | Kit Carson | 95 | 95 | 106 | → |
| Walden | Town | Jackson | 857 | 733 | 608 | → |
| Walsenburg | City | Huerfano | 3,313 | 4,234 | 3,068 | → |
| Walsh | Town | Baca | 710 | 722 | 546 | → |
| Ward | Town | Boulder | 150 | 174 | 150 | → |
| Watkins | Census-Designated Place | Arapahoe / Adams | ... | ... | 653 | → |
| Welby | Census-Designated Place | Adams | 10,218 | 12,973 | 14,846 | → |
| Weldona | Census-Designated Place | Morgan | ... | ... | 139 | → |
| Wellington | Town | Larimer | 1,197 | 2,709 | 6,289 | → |
| West Pleasant View | Census-Designated Place | Jefferson | ... | 3,932 | 3,840 | → |
| Westcliffe | Town | Custer | 313 | 419 | 568 | → |
| Westcreek | Census-Designated Place | Douglas | ... | ... | 129 | → |
| Westminster | City | Jefferson / Adams | 74,176 | 100,674 | 106,114 | → |
| Weston | Census-Designated Place | Las Animas | ... | ... | 55 | → |
| Wheat Ridge | City | Jefferson | 29,420 | 32,765 | 30,166 | → |
| Wiggins | Town | Morgan | 522 | 851 | 893 | → |
| Wiley | Town | Prowers | 389 | 486 | 405 | → |
| Williamsburg | Town | Fremont | 253 | 732 | 662 | → |
| Windsor | Town | Weld / Larimer | 5,238 | 10,211 | 18,644 | → |
| Winter Park | Town | Grand | 528 | 680 | 999 | → |
| Wolcott | Census-Designated Place | Eagle | ... | ... | 15 | → |
| Woodland Park | City | Teller | ... | 6,709 | 7,200 | → |
| Woodmoor | Census-Designated Place | El Paso | 3,858 | 7,177 | 8,741 | → |
| Woody Creek | Census-Designated Place | Pitkin | ... | ... | 263 | → |
| Wray | City | Yuma | 2,023 | 2,213 | 2,342 | → |
| Yampa | Town | Routt | 297 | 454 | 429 | → |
| Yuma | City | Yuma | 2,684 | 3,290 | 3,524 | → |
Source: U.S. Census Bureau (web).
Explanation: 2000 and 2010 population of incorporated places in the boundaries of 2010.