The Collaborative International Dictionary of English v.0.48:

Isabel \Is"a*bel\, n., Isabel color \Is"a*bel col"or\ [F.
   isabelle.]
   See Isabella. Isabella

U.S. Gazetteer Places (2000):

Isabel, KS -- U.S. city in Kansas
   Population (2000):    108
   Housing Units (2000): 53
   Land area (2000):     0.251222 sq. miles (0.650662 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.251222 sq. miles (0.650662 sq. km)
   FIPS code:            34550
   Located within:       Kansas (KS), FIPS 20
   Location:             37.468706 N, 98.551325 W
   ZIP Codes (1990):     67065
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Isabel, KS
    Isabel


U.S. Gazetteer Places (2000):

Isabel, SD -- U.S. town in South Dakota
   Population (2000):    239
   Housing Units (2000): 125
   Land area (2000):     0.888116 sq. miles (2.300210 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.888116 sq. miles (2.300210 sq. km)
   FIPS code:            32140
   Located within:       South Dakota (SD), FIPS 46
   Location:             45.393756 N, 101.430471 W
   ZIP Codes (1990):     57633
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Isabel, SD
    Isabel