| Area | Census 2000 | 7/1/2008 | Absolute Change | Relative Change |
| Colorado | 4,301,261 | 4,939,456 | 638,195 | 14.84% |
|---|---|---|---|---|
| Aguilar town | 593 | 570 | -23 | -3.88% |
| Akron town | 1,711 | 1,651 | -60 | -3.51% |
| Alamosa city | 7,960 | 8,745 | 785 | 9.86% |
| Alma town | 179 | 172 | -7 | -3.91% |
| Antonito town | 873 | 788 | -85 | -9.74% |
| Arriba town | 244 | 209 | -35 | -14.34% |
| Arvada city | 102,153 | 107,361 | 5,208 | 5.10% |
| Aspen city | 5,914 | 5,902 | -12 | -0.20% |
| Ault town | 1,432 | 1,442 | 10 | 0.70% |
| Aurora city | 276,393 | 319,057 | 42,664 | 15.44% |
| Avon town | 5,561 | 6,578 | 1,017 | 18.29% |
| Basalt town | 2,681 | 3,244 | 563 | 21.00% |
| Bayfield town | 1,549 | 2,024 | 475 | 30.66% |
| Bennett town | 2,021 | 2,595 | 574 | 28.40% |
| Berthoud town | 4,839 | 5,429 | 590 | 12.19% |
| Bethune town | 225 | 209 | -16 | -7.11% |
| Black Hawk city | 118 | 105 | -13 | -11.02% |
| Blanca town | 391 | 342 | -49 | -12.53% |
| Blue River town | 685 | 954 | 269 | 39.27% |
| Bonanza town | 14 | 14 | 0 | 0.00% |
| Boone town | 323 | 335 | 12 | 3.72% |
| Boulder city | 94,673 | 94,171 | -502 | -0.53% |
| Bow Mar town | 847 | 811 | -36 | -4.25% |
| Branson town | 77 | 77 | 0 | 0.00% |
| Breckenridge town | 2,408 | 3,420 | 1,012 | 42.03% |
| Brighton city | 20,905 | 31,380 | 10,475 | 50.11% |
| Brookside town | 219 | 212 | -7 | -3.20% |
| Broomfield city | 38,272 | 54,858 | 16,586 | 43.34% |
| Brush city | 5,117 | 5,332 | 215 | 4.20% |
| Buena Vista town | 2,195 | 2,134 | -61 | -2.78% |
| Burlington city | 3,678 | 3,875 | 197 | 5.36% |
| Ca±on City city | 15,431 | 15,889 | 458 | 2.97% |
| Calhan town | 896 | 868 | -28 | -3.12% |
| Campo town | 150 | 127 | -23 | -15.33% |
| Carbondale town | 5,196 | 6,266 | 1,070 | 20.59% |
| Castle Rock town | 20,224 | 44,369 | 24,145 | 119.39% |
| Cedaredge town | 1,854 | 2,252 | 398 | 21.47% |
| Center town | 2,392 | 2,389 | -3 | -0.13% |
| Central City city | 515 | 566 | 51 | 9.90% |
| Cheraw town | 211 | 201 | -10 | -4.74% |
| Cherry Hills Village city | 5,958 | 6,355 | 397 | 6.66% |
| Cheyenne Wells town | 1,010 | 786 | -224 | -22.18% |
| Coal Creek town | 303 | 355 | 52 | 17.16% |
| Cokedale town | 139 | 134 | -5 | -3.60% |
| Collbran town | 388 | 426 | 38 | 9.79% |
| Colorado Springs city | 360,890 | 380,307 | 19,417 | 5.38% |
| Columbine Valley town | 1,132 | 1,320 | 188 | 16.61% |
| Commerce City city | 20,991 | 42,473 | 21,482 | 102.34% |
| Cortez city | 7,977 | 8,609 | 632 | 7.92% |
| Craig city | 9,189 | 9,241 | 52 | 0.57% |
| Crawford town | 366 | 392 | 26 | 7.10% |
| Creede town | 377 | 421 | 44 | 11.67% |
| Crested Butte town | 1,529 | 1,651 | 122 | 7.98% |
| Crestone town | 73 | 107 | 34 | 46.58% |
| Cripple Creek city | 1,115 | 1,012 | -103 | -9.24% |
| Crook town | 128 | 124 | -4 | -3.12% |
| Crowley town | 187 | 165 | -22 | -11.76% |
| Dacono city | 3,015 | 4,052 | 1,037 | 34.39% |
| De Beque town | 451 | 522 | 71 | 15.74% |
| Deer Trail town | 598 | 577 | -21 | -3.51% |
| Del Norte town | 1,705 | 1,603 | -102 | -5.98% |
| Delta city | 6,400 | 9,020 | 2,620 | 40.94% |
| Denver city | 554,636 | 598,707 | 44,071 | 7.95% |
| Dillon town | 802 | 808 | 6 | 0.75% |
| Dinosaur town | 319 | 335 | 16 | 5.02% |
| Dolores town | 857 | 920 | 63 | 7.35% |
| Dove Creek town | 698 | 745 | 47 | 6.73% |
| Durango city | 13,922 | 16,416 | 2,494 | 17.91% |
| Eads town | 747 | 606 | -141 | -18.88% |
| Eagle town | 3,032 | 5,897 | 2,865 | 94.49% |
| Eaton town | 2,690 | 4,213 | 1,523 | 56.62% |
| Eckley town | 278 | 265 | -13 | -4.68% |
| Edgewater city | 5,445 | 5,136 | -309 | -5.67% |
| Elizabeth town | 1,434 | 1,436 | 2 | 0.14% |
| Empire town | 355 | 324 | -31 | -8.73% |
| Englewood city | 31,727 | 32,669 | 942 | 2.97% |
| Erie town | 6,291 | 16,432 | 10,141 | 161.20% |
| Estes Park town | 5,413 | 6,432 | 1,019 | 18.83% |
| Evans city | 9,514 | 18,842 | 9,328 | 98.04% |
| Fairplay town | 610 | 658 | 48 | 7.87% |
| Federal Heights city | 12,065 | 11,732 | -333 | -2.76% |
| Firestone town | 1,908 | 8,117 | 6,209 | 325.42% |
| Flagler town | 612 | 567 | -45 | -7.35% |
| Fleming town | 426 | 434 | 8 | 1.88% |
| Florence city | 3,653 | 3,625 | -28 | -0.77% |
| Fort Collins city | 118,652 | 136,509 | 17,857 | 15.05% |
| Fort Lupton city | 6,787 | 7,620 | 833 | 12.27% |
| Fort Morgan city | 11,034 | 10,539 | -495 | -4.49% |
| Fountain city | 15,197 | 19,669 | 4,472 | 29.43% |
| Fowler town | 1,206 | 1,094 | -112 | -9.29% |
| Foxfield town | 746 | 925 | 179 | 23.99% |
| Fraser town | 910 | 927 | 17 | 1.87% |
| Frederick town | 2,467 | 8,127 | 5,660 | 229.43% |
| Frisco town | 2,443 | 2,696 | 253 | 10.36% |
| Fruita city | 6,478 | 7,418 | 940 | 14.51% |
| Garden City town | 357 | 337 | -20 | -5.60% |
| Genoa town | 211 | 180 | -31 | -14.69% |
| Georgetown town | 1,088 | 1,027 | -61 | -5.61% |
| Gilcrest town | 1,162 | 1,151 | -11 | -0.95% |
| Glendale city | 4,547 | 4,798 | 251 | 5.52% |
| Glenwood Springs city | 7,736 | 9,053 | 1,317 | 17.02% |
| Golden city | 17,159 | 17,321 | 162 | 0.94% |
| Granada town | 640 | 580 | -60 | -9.37% |
| Granby town | 1,525 | 1,662 | 137 | 8.98% |
| Grand Junction city | 41,986 | 49,688 | 7,702 | 18.34% |
| Grand Lake town | 447 | 433 | -14 | -3.13% |
| Greeley city | 76,930 | 91,492 | 14,562 | 18.93% |
| Green Mountain Falls town | 773 | 803 | 30 | 3.88% |
| Greenwood Village city | 11,035 | 14,230 | 3,195 | 28.95% |
| Grover town | 153 | 154 | 1 | 0.65% |
| Gunnison city | 5,409 | 5,461 | 52 | 0.96% |
| Gypsum town | 3,654 | 6,052 | 2,398 | 65.63% |
| Hartman town | 111 | 102 | -9 | -8.11% |
| Haswell town | 84 | 70 | -14 | -16.67% |
| Haxtun town | 982 | 964 | -18 | -1.83% |
| Hayden town | 1,634 | 1,579 | -55 | -3.37% |
| Hillrose town | 254 | 270 | 16 | 6.30% |
| Holly town | 1,048 | 961 | -87 | -8.30% |
| Holyoke city | 2,261 | 2,223 | -38 | -1.68% |
| Hooper town | 123 | 124 | 1 | 0.81% |
| Hot Sulphur Springs town | 521 | 512 | -9 | -1.73% |
| Hotchkiss town | 968 | 1,084 | 116 | 11.98% |
| Hudson town | 1,565 | 1,617 | 52 | 3.32% |
| Hugo town | 885 | 742 | -143 | -16.16% |
| Idaho Springs city | 1,889 | 1,736 | -153 | -8.10% |
| Ignacio town | 669 | 767 | 98 | 14.65% |
| Iliff town | 213 | 216 | 3 | 1.41% |
| Jamestown town | 205 | 213 | 8 | 3.90% |
| Johnstown town | 3,827 | 9,309 | 5,482 | 143.25% |
| Julesburg town | 1,467 | 1,252 | -215 | -14.66% |
| Keenesburg town | 855 | 1,177 | 322 | 37.66% |
| Kersey town | 1,389 | 1,460 | 71 | 5.11% |
| Kim town | 65 | 65 | 0 | 0.00% |
| Kiowa town | 581 | 596 | 15 | 2.58% |
| Kit Carson town | 253 | 202 | -51 | -20.16% |
| Kremmling town | 1,578 | 1,528 | -50 | -3.17% |
| La Jara town | 877 | 792 | -85 | -9.69% |
| La Junta city | 7,568 | 7,046 | -522 | -6.90% |
| La Salle town | 1,849 | 1,986 | 137 | 7.41% |
| La Veta town | 924 | 882 | -42 | -4.55% |
| Lafayette city | 23,197 | 25,065 | 1,868 | 8.05% |
| Lake City town | 375 | 385 | 10 | 2.67% |
| Lakeside town | 20 | 19 | -1 | -5.00% |
| Lakewood city | 144,126 | 140,989 | -3,137 | -2.18% |
| Lamar city | 8,869 | 7,953 | -916 | -10.33% |
| Larkspur town | 234 | 328 | 94 | 40.17% |
| Las Animas city | 2,758 | 2,345 | -413 | -14.97% |
| Leadville city | 2,821 | 2,743 | -78 | -2.76% |
| Limon town | 2,071 | 1,750 | -321 | -15.50% |
| Littleton city | 40,340 | 40,777 | 437 | 1.08% |
| Lochbuie town | 2,049 | 4,800 | 2,751 | 134.26% |
| Log Lane Village town | 1,006 | 973 | -33 | -3.28% |
| Lone Tree city | 4,873 | 9,348 | 4,475 | 91.83% |
| Longmont city | 71,093 | 85,928 | 14,835 | 20.87% |
| Louisville city | 18,937 | 19,133 | 196 | 1.04% |
| Loveland city | 50,608 | 65,587 | 14,979 | 29.60% |
| Lyons town | 1,585 | 2,035 | 450 | 28.39% |
| Manassa town | 1,042 | 945 | -97 | -9.31% |
| Mancos town | 1,119 | 1,261 | 142 | 12.69% |
| Manitou Springs city | 4,980 | 5,161 | 181 | 3.63% |
| Manzanola town | 525 | 472 | -53 | -10.10% |
| Marble town | 105 | 104 | -1 | -0.95% |
| Mead town | 2,017 | 3,408 | 1,391 | 68.96% |
| Meeker town | 2,242 | 2,387 | 145 | 6.47% |
| Merino town | 246 | 270 | 24 | 9.76% |
| Milliken town | 2,888 | 6,159 | 3,271 | 113.26% |
| Minturn town | 1,068 | 1,185 | 117 | 10.96% |
| Moffat town | 114 | 126 | 12 | 10.53% |
| Monte Vista city | 4,529 | 4,009 | -520 | -11.48% |
| Montezuma town | 42 | 43 | 1 | 2.38% |
| Montrose city | 12,344 | 17,989 | 5,645 | 45.73% |
| Monument town | 1,971 | 2,588 | 617 | 31.30% |
| Morrison town | 430 | 415 | -15 | -3.49% |
| Mount Crested Butte town | 707 | 848 | 141 | 19.94% |
| Mountain View town | 569 | 520 | -49 | -8.61% |
| Mountain Village town | 978 | 1,370 | 392 | 40.08% |
| Naturita town | 635 | 655 | 20 | 3.15% |
| Nederland town | 1,394 | 1,369 | -25 | -1.79% |
| New Castle town | 1,984 | 3,796 | 1,812 | 91.33% |
| Northglenn city | 31,575 | 33,697 | 2,122 | 6.72% |
| Norwood town | 438 | 462 | 24 | 5.48% |
| Nucla town | 734 | 732 | -2 | -0.27% |
| Nunn town | 471 | 541 | 70 | 14.86% |
| Oak Creek town | 849 | 813 | -36 | -4.24% |
| Olathe town | 1,573 | 1,742 | 169 | 10.74% |
| Olney Springs town | 389 | 344 | -45 | -11.57% |
| Ophir town | 113 | 132 | 19 | 16.81% |
| Orchard City town | 2,880 | 3,203 | 323 | 11.22% |
| Ordway town | 1,248 | 1,098 | -150 | -12.02% |
| Otis town | 534 | 470 | -64 | -11.99% |
| Ouray city | 813 | 932 | 119 | 14.64% |
| Ovid town | 330 | 291 | -39 | -11.82% |
| Pagosa Springs town | 1,591 | 1,744 | 153 | 9.62% |
| Palisade town | 2,579 | 2,840 | 261 | 10.12% |
| Palmer Lake town | 2,179 | 2,326 | 147 | 6.75% |
| Paoli town | 42 | 41 | -1 | -2.38% |
| Paonia town | 1,497 | 1,633 | 136 | 9.08% |
| Parachute town | 1,006 | 1,290 | 284 | 28.23% |
| Parker town | 23,558 | 43,767 | 20,209 | 85.78% |
| Peetz town | 227 | 244 | 17 | 7.49% |
| Pierce town | 884 | 877 | -7 | -0.79% |
| Pitkin town | 124 | 117 | -7 | -5.65% |
| Platteville town | 2,370 | 2,634 | 264 | 11.14% |
| Poncha Springs town | 466 | 456 | -10 | -2.15% |
| Pritchett town | 137 | 116 | -21 | -15.33% |
| Pueblo city | 102,121 | 104,951 | 2,830 | 2.77% |
| Ramah town | 117 | 120 | 3 | 2.56% |
| Rangely town | 2,096 | 2,138 | 42 | 2.00% |
| Raymer town | 91 | 91 | 0 | 0.00% |
| Red Cliff town | 289 | 323 | 34 | 11.76% |
| Rico town | 205 | 258 | 53 | 25.85% |
| Ridgway town | 713 | 806 | 93 | 13.04% |
| Rifle city | 6,784 | 9,202 | 2,418 | 35.64% |
| Rockvale town | 426 | 436 | 10 | 2.35% |
| Rocky Ford city | 4,286 | 3,950 | -336 | -7.84% |
| Romeo town | 375 | 342 | -33 | -8.80% |
| Rye town | 202 | 201 | -1 | -0.50% |
| Saguache town | 578 | 581 | 3 | 0.52% |
| Salida city | 5,504 | 5,396 | -108 | -1.96% |
| San Luis town | 739 | 642 | -97 | -13.13% |
| Sanford town | 817 | 740 | -77 | -9.42% |
| Sawpit town | 25 | 24 | -1 | -4.00% |
| Sedgwick town | 191 | 163 | -28 | -14.66% |
| Seibert town | 180 | 165 | -15 | -8.33% |
| Severance town | 597 | 3,010 | 2,413 | 404.19% |
| Sheridan city | 5,600 | 5,412 | -188 | -3.36% |
| Sheridan Lake town | 66 | 56 | -10 | -15.15% |
| Silt town | 1,740 | 2,667 | 927 | 53.28% |
| Silver Cliff town | 512 | 578 | 66 | 12.89% |
| Silver Plume town | 203 | 184 | -19 | -9.36% |
| Silverthorne town | 3,196 | 3,980 | 784 | 24.53% |
| Silverton town | 531 | 524 | -7 | -1.32% |
| Simla town | 663 | 685 | 22 | 3.32% |
| Snowmass Village town | 1,822 | 1,911 | 89 | 4.88% |
| South Fork town | 604 | 533 | -71 | -11.75% |
| Springfield town | 1,562 | 1,291 | -271 | -17.35% |
| Starkville town | 128 | 128 | 0 | 0.00% |
| Steamboat Springs city | 9,815 | 9,592 | -223 | -2.27% |
| Sterling city | 11,360 | 12,800 | 1,440 | 12.68% |
| Stratton town | 669 | 606 | -63 | -9.42% |
| Sugar City town | 279 | 242 | -37 | -13.26% |
| Superior town | 9,011 | 10,549 | 1,538 | 17.07% |
| Swink town | 696 | 653 | -43 | -6.18% |
| Telluride town | 2,221 | 2,361 | 140 | 6.30% |
| Thornton city | 82,384 | 113,429 | 31,045 | 37.68% |
| Timnath town | 223 | 284 | 61 | 27.35% |
| Trinidad city | 9,078 | 9,125 | 47 | 0.52% |
| Two Buttes town | 67 | 57 | -10 | -14.93% |
| Vail town | 4,531 | 4,768 | 237 | 5.23% |
| Victor city | 445 | 406 | -39 | -8.76% |
| Vilas town | 110 | 94 | -16 | -14.55% |
| Vona town | 95 | 86 | -9 | -9.47% |
| Walden town | 734 | 586 | -148 | -20.16% |
| Walsenburg city | 4,182 | 3,830 | -352 | -8.42% |
| Walsh town | 723 | 637 | -86 | -11.89% |
| Ward town | 169 | 168 | -1 | -0.59% |
| Wellington town | 2,672 | 5,052 | 2,380 | 89.07% |
| Westcliffe town | 417 | 455 | 38 | 9.11% |
| Westminster city | 100,940 | 107,056 | 6,116 | 6.06% |
| Wheat Ridge city | 32,913 | 30,894 | -2,019 | -6.13% |
| Wiggins town | 838 | 945 | 107 | 12.77% |
| Wiley town | 483 | 446 | -37 | -7.66% |
| Williamsburg town | 714 | 758 | 44 | 6.16% |
| Windsor town | 9,896 | 18,058 | 8,162 | 82.48% |
| Winter Park town | 662 | 857 | 195 | 29.46% |
| Woodland Park city | 6,515 | 6,501 | -14 | -0.21% |
| Wray city | 2,187 | 2,109 | -78 | -3.57% |
| Yampa town | 443 | 425 | -18 | -4.06% |
| Yuma city | 3,285 | 3,263 | -22 | -0.67% |
Source: Population Division, U.S. Census Bureau