Colorado Census Data

  1. Colorado Cities & Towns: Absolute & Relative Change (%) from 2000 to 2009
  2. Colorado Cities & Towns: Population Estimates From 2000 to 2009
  3. Colorado Quick Facts: People, Business & Geography (U.S. Census Bureau)
  4. 2010 Census: Colorado Profile (PDF)

Census Data for Colorado Counties

(Links below lead to Quick Facts for Colorado Counties: People, Business & Geography at U.S. Census Bureau.)

Area 7/1/2009 7/1/2008 7/1/2007 7/1/2006 7/1/2005 7/1/2004 7/1/2003 7/1/2002 7/1/2001 7/1/2000 Census 2000
Colorado 5,024,748 4,935,213 4,842,259 4,753,044 4,660,780 4,599,681 4,548,775 4,504,265 4,433,068 4,328,070 4,301,261
Adams County 440,994 429,597 419,607 409,532 397,463 386,663 378,785 371,781 360,348 350,961 363,857
Alamosa County 15,424 15,441 15,297 15,288 15,317 15,293 15,125 15,168 14,991 14,964 14,966
Arapahoe County 565,360 554,372 543,414 532,347 525,293 519,785 514,406 509,598 502,810 491,701 487,967
Archuleta County 12,430 12,497 12,479 12,096 11,623 11,374 11,167 10,951 10,492 10,038 9,898
Baca County 3,723 3,782 3,840 3,912 3,979 4,050 4,106 4,331 4,468 4,501 4,517
Bent County 6,560 6,058 5,785 6,070 6,169 6,195 6,144 5,903 5,763 5,968 5,998
Boulder County 303,482 300,452 295,691 291,449 286,545 284,815 282,126 281,941 278,981 271,669 291,288
Broomfield County 55,990 54,813 53,664 51,454 48,490 46,591 45,098 42,522 41,436 39,563 0
Chaffee County 17,156 17,000 16,858 16,626 16,710 16,725 16,678 16,668 16,388 16,315 16,242
Cheyenne County 1,746 1,779 1,781 1,833 1,875 1,932 1,986 2,100 2,173 2,218 2,231
Clear Creek County 8,706 8,910 8,933 8,869 9,011 9,048 9,335 9,492 9,400 9,310 9,322
Conejos County 7,844 7,980 8,006 8,083 8,190 8,235 8,220 8,299 8,320 8,398 8,400
Costilla County 3,148 3,246 3,303 3,341 3,370 3,497 3,522 3,557 3,576 3,668 3,663
Crowley County 6,403 6,498 6,471 6,242 5,939 5,920 5,627 5,792 5,681 5,533 5,518
Custer County 4,000 3,944 3,964 3,863 3,879 3,821 3,794 3,667 3,636 3,514 3,503
Delta County 31,322 30,834 30,219 29,899 29,491 29,402 28,988 28,764 28,147 27,916 27,834
Denver County 610,345 593,086 578,789 568,692 561,323 558,506 558,351 561,072 564,411 556,094 554,636
Dolores County 1,940 1,954 1,889 1,892 1,803 1,797 1,802 1,842 1,835 1,846 1,844
Douglas County 288,225 281,138 271,955 259,881 246,058 234,810 221,978 210,037 197,344 180,311 175,766
Eagle County 53,653 52,019 50,568 49,112 47,719 46,317 45,312 44,477 43,381 41,987 41,659
El Paso County 604,542 595,359 585,518 579,710 567,103 558,680 551,129 544,815 535,549 519,463 516,929
Elbert County 23,287 22,938 22,684 22,648 22,374 22,139 21,953 21,779 21,167 20,099 19,872
Fremont County 47,815 47,677 47,340 47,203 46,930 46,858 47,108 47,197 46,747 46,277 46,145
Garfield County 56,298 54,838 52,965 51,111 49,177 47,881 47,388 46,793 45,579 44,259 43,791
Gilpin County 5,604 5,238 5,070 5,034 4,939 4,861 4,867 4,859 4,833 4,816 4,757
Grand County 13,911 13,775 13,575 13,373 13,114 13,186 13,017 12,959 12,645 12,490 12,442
Gunnison County 15,350 15,222 14,988 14,656 14,403 14,315 14,254 14,314 14,194 14,006 13,956
Hinsdale County 821 818 834 816 792 809 777 797 815 790 790
Huerfano County 7,558 7,765 7,705 7,774 7,763 7,714 7,934 7,921 7,869 7,823 7,862
Jackson County 1,369 1,340 1,369 1,383 1,422 1,463 1,494 1,521 1,522 1,576 1,577
Jefferson County 536,922 533,295 528,396 524,507 522,007 522,889 526,426 529,191 529,690 526,471 527,056
Kiowa County 1,238 1,272 1,305 1,360 1,385 1,394 1,452 1,485 1,534 1,614 1,622
Kit Carson County 8,402 8,128 7,871 7,948 8,010 8,098 8,072 8,203 7,974 7,978 8,011
La Plata County 51,464 50,633 49,668 48,834 47,792 46,905 46,258 45,979 45,103 44,221 43,941
Lake County 8,046 7,999 7,854 7,666 7,653 7,697 7,691 7,819 7,839 7,832 7,812
Larimer County 298,382 292,889 286,927 281,215 275,477 271,830 268,671 265,659 260,746 253,152 251,494
Las Animas County 16,020 15,901 15,815 15,725 15,608 15,588 15,720 15,443 15,119 15,276 15,207
Lincoln County 5,169 5,208 5,247 5,329 5,471 5,612 5,786 5,857 5,866 6,064 6,087
Logan County 20,772 20,718 20,908 20,895 20,849 21,122 21,286 21,229 21,271 20,647 20,504
Mesa County 146,093 141,905 138,289 133,651 129,457 127,095 124,510 122,131 119,287 117,488 116,255
Mineral County 912 950 963 916 923 939 894 857 821 837 831
Moffat County 13,980 13,822 13,555 13,298 13,122 13,335 13,245 13,304 13,145 13,166 13,184
Montezuma County 25,368 25,150 25,108 24,907 24,468 24,429 24,239 23,943 23,707 23,863 23,830
Montrose County 41,412 40,484 39,452 38,098 37,069 36,192 35,674 35,108 34,342 33,600 33,432
Morgan County 27,850 27,540 27,552 27,639 27,567 27,607 27,634 27,499 27,281 27,256 27,171
Otero County 18,670 18,639 18,706 18,967 19,184 19,389 19,546 19,673 20,008 20,248 20,311
Ouray County 4,602 4,588 4,400 4,219 4,160 4,086 3,941 3,914 3,808 3,776 3,742
Park County 16,762 16,997 16,964 16,656 16,560 16,420 16,242 15,919 15,346 14,696 14,523
Phillips County 4,472 4,448 4,469 4,482 4,524 4,522 4,449 4,521 4,470 4,455 4,480
Pitkin County 16,043 15,616 15,099 14,905 14,905 14,834 14,923 14,909 14,909 14,790 14,872
Prowers County 12,982 12,989 13,006 13,370 13,684 13,784 13,992 14,170 14,251 14,444 14,483
Pueblo County 157,224 156,009 154,348 151,814 149,677 148,578 147,931 146,735 144,130 141,839 141,472
Rio Blanco County 6,534 6,318 6,198 6,033 5,832 5,918 5,859 5,909 5,846 5,979 5,986
Rio Grande County 11,581 11,632 11,621 11,839 12,043 12,193 12,192 12,157 12,172 12,429 12,413
Routt County 23,469 22,965 22,340 21,722 21,282 21,077 20,833 20,446 20,214 19,828 19,690
Saguache County 7,097 7,018 6,864 6,842 6,822 6,798 6,590 6,442 6,155 5,978 5,917
San Juan County 555 571 574 574 565 580 572 568 567 559 558
San Miguel County 7,558 7,527 7,459 7,186 7,193 7,115 7,121 7,156 6,885 6,616 6,594
Sedgwick County 2,326 2,348 2,330 2,416 2,471 2,512 2,620 2,673 2,650 2,743 2,747
Summit County 27,239 26,724 26,234 25,745 25,287 25,177 25,313 24,966 24,715 23,701 23,548
Teller County 21,685 21,616 21,749 21,440 21,282 21,130 21,270 21,276 21,055 20,648 20,555
Washington County 4,420 4,472 4,597 4,666 4,718 4,777 4,890 4,943 4,816 4,942 4,926
Weld County 254,759 248,852 242,250 234,387 225,856 217,706 210,635 203,570 193,060 183,045 180,936
Yuma County 9,734 9,620 9,580 9,604 9,613 9,671 9,827 9,694 9,785 9,815 9,841

Source: Population Division, U.S. Census Bureau