(CO-99-2) County Population Estimates for July 1, 1999 and Population Change for April 1, 1990 to July 1, 1999 (includes revised April 1, 1990 Population Estimates Base) Source: Population Estimates Program, Population Division, U.S. Census Bureau, Washington, DC 20233 Contact: Demographic Call Center Staff, 1-866-758-1060 Internet Release Date: March 9, 2000 4/1/90 Numeric Percent Population Population Population 7/1/99 Estimates Change Change FIPS State/County Code and Area Name Estimate Base 1990-99 1990-99 08 Colorado........................... 4,056,133 3,294,473 761,660 23.1 08001 Adams County, CO................... 331,045 265,038 66,007 24.9 08003 Alamosa County, CO................. 14,595 13,617 978 7.2 08005 Arapahoe County, CO................ 482,089 391,572 90,517 23.1 08007 Archuleta County, CO............... 9,604 5,345 4,259 79.7 08009 Baca County, CO.................... 4,319 4,556 -237 -5.2 08011 Bent County, CO.................... 5,799 5,048 751 14.9 08013 Boulder County, CO................. 273,112 225,339 47,773 21.2 08015 Chaffee County, CO................. 15,601 12,684 2,917 23.0 08017 Cheyenne County, CO................ 2,229 2,397 -168 -7.0 08019 Clear Creek County, CO............. 9,167 7,619 1,548 20.3 08021 Conejos County, CO................. 8,077 7,453 624 8.4 08023 Costilla County, CO................ 3,575 3,190 385 12.1 08025 Crowley County, CO................. 4,428 3,946 482 12.2 08027 Custer County, CO.................. 3,596 1,926 1,670 86.7 08029 Delta County, CO................... 27,197 20,980 6,217 29.6 08031 Denver County, CO.................. 499,775 467,549 32,226 6.9 08033 Dolores County, CO................. 1,876 1,504 372 24.7 08035 Douglas County, CO................. 156,860 60,391 96,469 159.7 08037 Eagle County, CO................... 34,950 21,928 13,022 59.4 08039 Elbert County, CO.................. 19,757 9,646 10,111 104.8 08041 El Paso County, CO................. 499,994 397,014 102,980 25.9 08043 Fremont County, CO................. 44,699 32,273 12,426 38.5 08045 Garfield County, CO................ 40,671 29,974 10,697 35.7 08047 Gilpin County, CO.................. 4,474 3,070 1,404 45.7 08049 Grand County, CO................... 10,474 7,966 2,508 31.5 08051 Gunnison County, CO................ 12,576 10,273 2,303 22.4 08053 Hinsdale County, CO................ 740 467 273 58.5 08055 Huerfano County, CO................ 6,802 6,009 793 13.2 08057 Jackson County, CO................. 1,540 1,605 -65 -4.0 08059 Jefferson County, CO............... 509,222 438,430 70,792 16.1 08061 Kiowa County, CO................... 1,634 1,688 -54 -3.2 08063 Kit Carson County, CO.............. 7,411 7,140 271 3.8 08065 Lake County, CO.................... 6,385 6,007 378 6.3 08067 La Plata County, CO................ 41,148 32,284 8,864 27.5 08069 Larimer County, CO................. 236,849 186,136 50,713 27.2 08071 Las Animas County, CO.............. 14,712 13,765 947 6.9 08073 Lincoln County, CO................. 5,672 4,529 1,143 25.2 08075 Logan County, CO................... 17,932 17,567 365 2.1 08077 Mesa County, CO.................... 115,147 93,145 22,002 23.6 08079 Mineral County, CO................. 727 558 169 30.3 08081 Moffat County, CO.................. 12,714 11,357 1,357 11.9 08083 Montezuma County, CO............... 22,672 18,672 4,000 21.4 08085 Montrose County, CO................ 31,432 24,423 7,009 28.7 08087 Morgan County, CO.................. 25,393 21,939 3,454 15.7 08089 Otero County, CO................... 20,612 20,185 427 2.1 08091 Ouray County, CO................... 3,475 2,295 1,180 51.4 08093 Park County, CO.................... 14,218 7,174 7,044 98.2 08095 Phillips County, CO................ 4,226 4,189 37 0.9 08097 Pitkin County, CO.................. 13,332 12,661 671 5.3 08099 Prowers County, CO................. 13,781 13,347 434 3.3 08101 Pueblo County, CO.................. 136,987 123,051 13,936 11.3 08103 Rio Blanco County, CO.............. 6,203 6,051 152 2.5 08105 Rio Grande County, CO.............. 11,508 10,770 738 6.9 08107 Routt County, CO................... 17,941 14,088 3,853 27.3 08109 Saguache County, CO................ 6,176 4,619 1,557 33.7 08111 San Juan County, CO................ 522 745 -223 -29.9 08113 San Miguel County, CO.............. 5,464 3,653 1,811 49.6 08115 Sedgwick County, CO................ 2,587 2,690 -103 -3.8 08117 Summit County, CO.................. 19,610 12,881 6,729 52.2 08119 Teller County, CO.................. 21,228 12,468 8,760 70.3 08121 Washington County, CO.............. 4,357 4,812 -455 -9.5 08123 Weld County, CO.................... 165,805 131,821 33,984 25.8 08125 Yuma County, CO.................... 9,430 8,954 476 5.3