WordNet (r) 3.0 (2006):

Allentown
    n 1: a city in eastern Pennsylvania; an industrial and
         commercial center

U.S. Gazetteer Places (2000):

Allentown, NJ -- U.S. borough in New Jersey
   Population (2000):    1882
   Housing Units (2000): 718
   Land area (2000):     0.607660 sq. miles (1.573832 sq. km)
   Water area (2000):    0.017272 sq. miles (0.044733 sq. km)
   Total area (2000):    0.624932 sq. miles (1.618565 sq. km)
   FIPS code:            00760
   Located within:       New Jersey (NJ), FIPS 34
   Location:             40.176049 N, 74.584910 W
   ZIP Codes (1990):     08501
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Allentown, NJ
    Allentown


U.S. Gazetteer Places (2000):

Allentown, GA -- U.S. town in Georgia
   Population (2000):    287
   Housing Units (2000): 129
   Land area (2000):     3.083154 sq. miles (7.985331 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    3.083154 sq. miles (7.985331 sq. km)
   FIPS code:            01500
   Located within:       Georgia (GA), FIPS 13
   Location:             32.592059 N, 83.228147 W
   ZIP Codes (1990):     31003
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Allentown, GA
    Allentown


U.S. Gazetteer Places (2000):

Allentown, PA -- U.S. city in Pennsylvania
   Population (2000):    106632
   Housing Units (2000): 45960
   Land area (2000):     17.737958 sq. miles (45.941098 sq. km)
   Water area (2000):    0.236771 sq. miles (0.613233 sq. km)
   Total area (2000):    17.974729 sq. miles (46.554331 sq. km)
   FIPS code:            02000
   Located within:       Pennsylvania (PA), FIPS 42
   Location:             40.601697 N, 75.477328 W
   ZIP Codes (1990):     18101 18102 18103 18104
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Allentown, PA
    Allentown