State | County | Estimated Population 2005 | | | | | Arizona | Maricopa County | 3,635,528 | | California | Alameda County | 1,448,905 | | California | Contra Costa County | 1,017,787 | | California | Los Angeles County | 9,935,475 | | California | Orange County | 2,988,072 | | California | Riverside County | 1,946,419 | | California | Sacramento County | 1,363,482 | | California | San Bernardino County | 1,963,535 | | California | San Diego County | 2,933,462 | | California | Santa Clara County | 1,699,052 | | Florida | Broward County | 1,777,638 | | Florida | Hillsborough County | 1,132,152 | | Florida | Miami-Dade County | 2,376,014 | | Florida | Orange County | 1,023,023 | | Florida | Palm Beach County | 1,268,548 | | Illinois | Cook County | 5,303,683 | | Massachusetts | Middlesex County | 1,459,011 | | Michigan | Oakland County | 1,214,361 | | Michigan | Wayne County | 1,998,217 | | Minnesota | Hennepin County | 1,119,364 | | Missouri | St Louis County | 1,004,666 | | Nevada | Clark County | 1,710,551 | | New York | Bronx County | 1,357,589 | | New York | Kings County | 2,486,235 | | New York | Nassau County | 1,333,137 | | New York | New York County | 1,593,200 | | New York | Queens County | 2,241,600 | | New York | Suffolk County | 1,474,927 | | Ohio | Cuyahoga County | 1,335,317 | | Ohio | Franklin County | 1,090,771 | | Pennsylvania | Allegheny County | 1,235,841 | | Pennsylvania | Philadelphia County | 1,463,281 | | Texas | Bexar County | 1,518,370 | | Texas | Dallas County | 2,305,454 | | Texas | Harris County | 3,693,050 | | Texas | Tarrant County | 1,620,479 | | Virginia | Fairfax County | 1,006,529 | | Washington | King County | 1,793,583 |
U.S. Census Bureau, County Business Patterns 2003 |
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