21012

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

21012 -- U.S. ZIP code
   Municipality (1990):  ARNOLD, Maryland
   All ZIPs for this municipality (1990):
                         21012
   Population (2000):    21001
   Housing Units (2000): 7712
   Land area (2000):     9.423136 sq. miles (24.405808 sq. km)
   Water area (2000):    0.024669 sq. miles (0.063892 sq. km)
   Total area (2000):    9.447805 sq. miles (24.469700 sq. km)
   Located within:       Maryland (MD)
   Location:             39.049377 N, 76.498921 W