(CO-2000-4) County Population Estimates for April 1, 2000 and Demographic Components of Population Change: April 1, 1990 Census to April 1, 2000 Estimate The 4/1/1990 Census figure shown in this table is the population estimates base. It is an update of the 4/1/1990 Census figure shown in previous Census Bureau reports and reflects the governmental unit boundaries legally effective as of January 1, 2000, including any post-1990 corrections and other changes due to annexations, new incorporations, or mergers. The 4/1/2000 Estimates were created without knowledge of the Census 2000 results. The 4/1/2000 Census figure is included in this table for comparative purposes. Source: Population Estimates Program, Population Division, U.S. Census Bureau, Washington, DC 20233 Contact: Statistical Information Staff, Population Division, U.S. Census Bureau (301-763-2422 or pop@census.gov) Internet Release Date: November 1, 2005 ------4/1/1990 Census to 4/1/2000 Estimate------ Net Net 4/1/2000 4/1/2000 4/1/1990 International Domestic FIPS State/County Code and Area Name Census Estimate Census Births Deaths Migration Migration 08 Colorado.......................... 4,301,261 4,116,635 3,294,473 561,829 246,503 74,088 427,066 08001 Adams County, CO.................. 363,857 338,949 265,038 50,171 17,595 5,908 35,383 08003 Alamosa County, CO................ 14,966 14,711 13,617 2,445 1,054 222 -481 08005 Arapahoe County, CO............... 487,967 488,272 391,572 63,638 22,397 8,952 46,219 08007 Archuleta County, CO.............. 9,898 9,944 5,345 785 381 56 4,096 08009 Baca County, CO................... 4,517 4,268 4,556 447 598 51 -179 08011 Bent County, CO................... 5,998 5,798 5,048 646 646 33 727 08013 Boulder County, CO................ 291,288 277,943 225,339 33,137 12,580 7,827 24,943 08015 Chaffee County, CO................ 16,242 15,944 12,684 1,291 1,417 58 3,350 08017 Cheyenne County, CO............... 2,231 2,227 2,397 303 226 36 -280 08019 Clear Creek County, CO............ 9,322 9,186 7,619 1,032 386 155 798 08021 Conejos County, CO................ 8,400 8,113 7,453 1,240 739 64 134 08023 Costilla County, CO............... 3,663 3,656 3,190 452 346 158 208 08025 Crowley County, CO................ 5,518 4,484 3,946 466 437 19 510 08027 Custer County, CO................. 3,503 3,673 1,926 304 159 12 1,578 08029 Delta County, CO.................. 27,834 27,434 20,980 2,960 2,936 279 6,213 08031 Denver County, CO................. 554,636 502,363 467,549 91,353 48,025 24,386 -32,202 08033 Dolores County, CO................ 1,844 1,893 1,504 171 134 2 348 08035 Douglas County, CO................ 175,766 169,227 60,391 19,361 2,678 1,584 88,968 08037 Eagle County, CO.................. 41,659 35,525 21,928 5,145 575 1,562 7,492 08039 Elbert County, CO................. 19,872 20,607 9,646 1,770 606 46 9,663 08041 El Paso County, CO................ 516,929 506,828 397,014 77,009 25,055 4,111 44,512 08043 Fremont County, CO................ 46,145 45,106 32,273 4,031 4,472 41 13,360 08045 Garfield County, CO............... 43,791 41,530 29,974 5,422 2,278 715 7,690 08047 Gilpin County, CO................. 4,757 4,547 3,070 403 148 25 1,190 08049 Grand County, CO.................. 12,442 10,604 7,966 1,126 397 84 1,839 08051 Gunnison County, CO............... 13,956 12,648 10,273 1,258 478 29 1,604 08053 Hinsdale County, CO............... 790 742 467 55 22 6 236 08055 Huerfano County, CO............... 7,862 6,697 6,009 627 873 25 915 08057 Jackson County, CO................ 1,577 1,561 1,605 175 123 39 -130 08059 Jefferson County, CO.............. 527,056 511,116 438,430 65,306 27,727 5,397 31,590 08061 Kiowa County, CO.................. 1,622 1,633 1,688 164 186 7 -34 08063 Kit Carson County, CO............. 8,011 7,387 7,140 889 694 61 15 08065 Lake County, CO................... 7,812 6,441 6,007 1,088 327 144 -447 08067 La Plata County, CO............... 43,941 41,655 32,284 4,375 2,255 180 7,138 08069 Larimer County, CO................ 251,494 239,487 186,136 28,206 12,393 2,503 35,603 08071 Las Animas County, CO............. 15,207 14,953 13,765 1,720 1,732 103 1,133 08073 Lincoln County, CO................ 6,087 5,632 4,529 578 587 9 1,121 08075 Logan County, CO.................. 20,504 18,119 17,567 2,475 1,761 121 -243 08077 Mesa County, CO................... 116,255 116,611 93,145 13,663 9,682 531 19,272 08079 Mineral County, CO................ 831 745 558 61 53 0 184 08081 Moffat County, CO................. 13,184 12,718 11,357 1,569 737 74 499 08083 Montezuma County, CO.............. 23,830 22,807 18,672 3,129 1,889 117 2,863 08085 Montrose County, CO............... 33,432 31,608 24,423 3,985 2,794 367 5,716 08087 Morgan County, CO................. 27,171 25,562 21,939 4,415 2,362 1,231 432 08089 Otero County, CO.................. 20,311 20,402 20,185 2,947 2,449 204 -486 08091 Ouray County, CO.................. 3,742 3,554 2,295 288 163 20 1,123 08093 Park County, CO................... 14,523 14,856 7,174 1,273 393 32 6,693 08095 Phillips County, CO............... 4,480 4,197 4,189 587 578 81 -71 08097 Pitkin County, CO................. 14,872 13,056 12,661 1,455 321 459 -1,186 08099 Prowers County, CO................ 14,483 13,674 13,347 2,180 1,212 205 -807 08101 Pueblo County, CO................. 141,472 138,101 123,051 18,110 13,027 561 9,616 08103 Rio Blanco County, CO............. 5,986 6,120 6,051 700 432 12 -207 08105 Rio Grande County, CO............. 12,413 11,543 10,770 1,626 1,136 372 -39 08107 Routt County, CO.................. 19,690 18,214 14,088 1,859 600 161 2,741 08109 Saguache County, CO............... 5,917 6,476 4,619 897 362 171 1,154 08111 San Juan County, CO............... 558 539 745 77 35 1 -243 08113 San Miguel County, CO............. 6,594 5,585 3,653 587 112 64 1,405 08115 Sedgwick County, CO............... 2,747 2,615 2,690 304 396 20 12 08117 Summit County, CO................. 23,548 19,752 12,881 2,189 280 354 4,619 08119 Teller County, CO................. 20,555 21,534 12,468 1,924 721 32 7,779 08121 Washington County, CO............. 4,926 4,362 4,812 559 585 31 -423 08123 Weld County, CO................... 180,936 171,633 131,821 24,218 9,751 3,910 21,546 08125 Yuma County, CO................... 9,841 9,468 8,954 1,200 1,012 68 302