(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 53 Washington......................... 5,756,361 4,866,669 889,692 18.3 53001 Adams County, WA................... 15,235 13,603 1,632 12.0 53003 Asotin County, WA.................. 21,206 17,605 3,601 20.5 53005 Benton County, WA.................. 137,844 112,560 25,284 22.5 53007 Chelan County, WA.................. 60,835 52,250 8,585 16.4 53009 Clallam County, WA................. 64,690 56,210 8,480 15.1 53011 Clark County, WA................... 336,268 238,053 98,215 41.3 53013 Columbia County, WA................ 4,155 4,024 131 3.3 53015 Cowlitz County, WA................. 91,949 82,119 9,830 12.0 53017 Douglas County, WA................. 34,191 26,205 7,986 30.5 53019 Ferry County, WA................... 7,188 6,295 893 14.2 53021 Franklin County, WA................ 46,782 37,473 9,309 24.8 53023 Garfield County, WA................ 2,339 2,248 91 4.0 53025 Grant County, WA................... 72,019 54,798 17,221 31.4 53027 Grays Harbor County, WA............ 67,102 64,175 2,927 4.6 53029 Island County, WA.................. 73,490 60,195 13,295 22.1 53031 Jefferson County, WA............... 26,748 20,406 6,342 31.1 53033 King County, WA.................... 1,664,846 1,507,305 157,541 10.5 53035 Kitsap County, WA.................. 236,560 189,731 46,829 24.7 53037 Kittitas County, WA................ 32,021 26,725 5,296 19.8 53039 Klickitat County, WA............... 19,530 16,616 2,914 17.5 53041 Lewis County, WA................... 68,621 59,358 9,263 15.6 53043 Lincoln County, WA................. 9,759 8,864 895 10.1 53045 Mason County, WA................... 50,357 38,341 12,016 31.3 53047 Okanogan County, WA................ 38,432 33,350 5,082 15.2 53049 Pacific County, WA................. 20,768 18,882 1,886 10.0 53051 Pend Oreille County, WA............ 11,604 8,915 2,689 30.2 53053 Pierce County, WA.................. 688,807 586,203 102,604 17.5 53055 San Juan County, WA................ 12,898 10,035 2,863 28.5 53057 Skagit County, WA.................. 101,180 79,545 21,635 27.2 53059 Skamania County, WA................ 9,831 8,289 1,542 18.6 53061 Snohomish County, WA............... 596,598 465,628 130,970 28.1 53063 Spokane County, WA................. 409,736 361,333 48,403 13.4 53065 Stevens County, WA................. 40,137 30,948 9,189 29.7 53067 Thurston County, WA................ 205,459 161,238 44,221 27.4 53069 Wahkiakum County, WA............... 3,841 3,327 514 15.4 53071 Walla Walla County, WA............. 53,854 48,439 5,415 11.2 53073 Whatcom County, WA................. 160,310 127,780 32,530 25.5 53075 Whitman County, WA................. 38,386 38,775 -389 -1.0 53077 Yakima County, WA.................. 220,785 188,823 31,962 16.9