WordNet (r) 3.0 (2006):

Texarkana
    n 1: a town in northeast Texas adjacent to Texarkana, Arkansas
    2: a town in southwest Arkansas on the Texas border adjacent to
       Texarkana, Texas

U.S. Gazetteer Places (2000):

Texarkana, AR -- U.S. city in Arkansas
   Population (2000):    26448
   Housing Units (2000): 11721
   Land area (2000):     31.845173 sq. miles (82.478617 sq. km)
   Water area (2000):    0.187991 sq. miles (0.486894 sq. km)
   Total area (2000):    32.033164 sq. miles (82.965511 sq. km)
   FIPS code:            68810
   Located within:       Arkansas (AR), FIPS 05
   Location:             33.433075 N, 94.020514 W
   ZIP Codes (1990):     75502
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Texarkana, AR
    Texarkana


U.S. Gazetteer Places (2000):

Texarkana, TX -- U.S. city in Texas
   Population (2000):    34782
   Housing Units (2000): 15105
   Land area (2000):     25.625997 sq. miles (66.371025 sq. km)
   Water area (2000):    0.101817 sq. miles (0.263704 sq. km)
   Total area (2000):    25.727814 sq. miles (66.634729 sq. km)
   FIPS code:            72368
   Located within:       Texas (TX), FIPS 48
   Location:             33.437170 N, 94.067394 W
   ZIP Codes (1990):     75503
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Texarkana, TX
    Texarkana