(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 04 Arizona............................ 4,778,332 3,665,339 1,112,993 30.4 04001 Apache County, AZ.................. 68,562 61,591 6,971 11.3 04003 Cochise County, AZ................. 112,754 97,624 15,130 15.5 04005 Coconino County, AZ................ 114,498 96,591 17,907 18.5 04007 Gila County, AZ.................... 49,051 40,216 8,835 22.0 04009 Graham County, AZ.................. 31,998 26,554 5,444 20.5 04011 Greenlee County, AZ................ 9,018 8,008 1,010 12.6 04012 La Paz County, AZ.................. 14,867 13,844 1,023 7.4 04013 Maricopa County, AZ................ 2,861,395 2,122,101 739,294 34.8 04015 Mohave County, AZ.................. 134,222 93,497 40,725 43.6 04017 Navajo County, AZ.................. 98,327 77,674 20,653 26.6 04019 Pima County, AZ.................... 803,618 666,957 136,661 20.5 04021 Pinal County, AZ................... 152,301 116,397 35,904 30.8 04023 Santa Cruz County, AZ.............. 39,150 29,676 9,474 31.9 04025 Yavapai County, AZ................. 152,957 107,714 45,243 42.0 04027 Yuma County, AZ.................... 135,614 106,895 28,719 26.9