21778

1 definition found

From U.S. Gazetteer Zip Code Tabulation Areas (2000) [gaz-zip]:

  21778 -- U.S. ZIP code
     Municipality (1990):  ROCKY RIDGE, Maryland
     All ZIPs for this municipality (1990):
                           21778
     Population (2000):    1020
     Housing Units (2000): 382


     Land area (2000):     16.586230 sq. miles (42.958136 sq. km)
     Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
     Total area (2000):    16.586230 sq. miles (42.958136 sq. km)
     Located within:       Maryland (MD)
     Location:             39.610752 N, 77.341668 W