20187

from U.S. Gazetteer Zip Code Tabulation Areas (2000)

20187 -- U.S. ZIP code
   Population (2000):    12886
   Housing Units (2000): 4415
   Land area (2000):     69.018448 sq. miles (178.756952 sq. km)
   Water area (2000):    0.529539 sq. miles (1.371499 sq. km)
   Total area (2000):    69.547987 sq. miles (180.128451 sq. km)
   Located within:       Virginia (VA)
   Location:             38.735202 N, 77.737176 W