Top 25 Counties in the U.S. ranked by Most People  
  Per Square Mile, 2000

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

County, State                          Number      Rank
-------------------------------------------------------
New York, NY                         66,834.6         1
Kings, NY                            34,722.9         2
Bronx, NY                            31,729.8         3
Queens, NY                           20,453.0         4
San Francisco, CA                    16,526.2         5
Hudson, NJ                           12,956.9         6
Suffolk, MA                          11,691.6         7
Philadelphia, PA                     11,241.1         8
Washington, DC                        9,378.0         9
Alexandria IC, VA                     8,552.2        10
Baltimore IC, MD                      8,038.9        11
Richmond, NY                          7,650.5        12
Arlington, VA                         7,286.7        13
Essex, NJ                             6,298.7        14
Cook, IL                              5,683.7        15
St. Louis IC, MO                      5,616.0        16
Falls Church IC, VA                   5,188.5        17
Manassas Park IC, VA                  5,145.0        18
Union, NJ                             5,073.2        19
Nassau, NY                            4,650.0        20
Charlottesville IC, VA                4,504.9        21
Norfolk IC, VA                        4,340.8        22
Milwaukee, WI                         3,885.0        23
Bergen, NJ                            3,778.3        24
Denver, CO                            3,625.1        25

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