'Callahan' definitions:

Callahan, FL -- U.S. town in Florida

From: Gazetteer 2000
Name :
Callahan, FL -- U.S. town in Florida
Population (2000) :
962
Housing Units (2000) :
444
Land area (2000) :
1.327063 sq. miles (3.437077 sq. km)
Water area (2000) :
0.000000 sq. miles (0.000000 sq. km)
Total area (2000) :
1.327063 sq. miles (3.437077 sq. km)
FIPS code :
09700
Located within :
Florida (FL), FIPS 12
Location :
30.560702 N, 81.830850 W
ZIP Codes (1990) :
32011
Note :
some ZIP codes may be omitted esp. for suburbs.

Callahan -- U.S. County in Texas

From: Gazetteer 2000
Name :
Callahan -- U.S. County in Texas
Population (2000) :
12905
Housing Units (2000) :
5925
Land area (2000) :
898.618313 sq. miles (2327.410648 sq. km)
Water area (2000) :
2.640927 sq. miles (6.839969 sq. km)
Total area (2000) :
901.259240 sq. miles (2334.250617 sq. km)
Located within :
Texas (TX), FIPS 48
Location :
32.326246 N, 99.371147 W