The Collaborative International Dictionary of English v.0.48:

Iron Gate \I"ron Gate"\, The Iron Gates \The I"ron Gates"\,
   prop. n.
   A famous gorge, about 11/2 miles long, cut by the Danube in
   the Carpathian mountains near the intersection of Hungary,
   Serbia, and Rumania.
   [PJC]

U.S. Gazetteer Places (2000):

Iron Gate, VA -- U.S. town in Virginia
   Population (2000):    404
   Housing Units (2000): 197
   Land area (2000):     0.345128 sq. miles (0.893878 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.345128 sq. miles (0.893878 sq. km)
   FIPS code:            40024
   Located within:       Virginia (VA), FIPS 51
   Location:             37.798484 N, 79.791219 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Iron Gate, VA
    Iron Gate