Top 25 Counties in the U.S. ranked by Largest 
  Population, 2000

County, State                          Number      Rank
-------------------------------------------------------
Los Angeles, CA                     9,519,338         1
Cook, IL                            5,376,741         2
Harris, TX                          3,400,578         3
Maricopa, AZ                        3,072,149         4
Orange, CA                          2,846,289         5
San Diego, CA                       2,813,833         6
Kings, NY                           2,465,326         7
Dade, FL                            2,253,362         8
Queens, NY                          2,229,379         9
Dallas, TX                          2,218,899        10
Wayne, MI                           2,061,162        11
King, WA                            1,737,034        12
San Bernardino, CA                  1,709,434        13
Santa Clara, CA                     1,682,585        14
Broward, FL                         1,623,018        15
Riverside, CA                       1,545,387        16
New York, NY                        1,537,195        17
Philadelphia, PA                    1,517,550        18
Middlesex, MA                       1,465,396        19
Tarrant, TX                         1,446,219        20
Alameda, CA                         1,443,741        21
Suffolk, NY                         1,419,369        22
Cuyahoga, OH                        1,393,978        23
Bexar, TX                           1,392,931        24
Clark, NV                           1,375,765        25

Source:  U.S. Census Bureau,
         County and City Data Book: 2000,
         Table B-1.