Top 25 Counties in the U.S. ranked by Largest 
  Population Decline, 1990-2000

[Independent cities are denoted by IC following 
 "county" name]

County, State                          Number      Rank
-------------------------------------------------------
Baltimore IC, MD                      -84,860         1
Philadelphia, PA                      -68,027         2
Allegheny, PA                         -54,783         3
Wayne, MI                             -50,525         4
St. Louis IC, MO                      -48,496         5
Washington, DC                        -34,841         6
Norfolk IC, VA                        -26,847         7
Hamilton, OH                          -20,925         8
Milwaukee, WI                         -19,048         9
Erie, NY                              -18,319        10
Cuyahoga, OH                          -18,162        11
Oneida, NY                            -15,367        12
Montgomery, OH                        -14,747        13
Aroostook, ME                         -12,998        14
Orleans, LA                           -12,264        15
Broome, NY                            -11,624        16
Onondaga, NY                          -10,637        17
Cambria, PA                           -10,464        18
Vernon, LA                             -9,430        19
Luzerne, PA                            -8,899        20
McDowell, WV                           -7,904        21
Kanawha, WV                            -7,546        22
Lucas, OH                              -7,307        23
Mahoning, OH                           -7,251        24
St. Clair, IL                          -6,770        25

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