What is "ballwin"

Population (2000): 31283
Housing Units (2000): 12062
Land area (2000): 8.951872 sq. miles (23.185242 sq. km)
Water area (2000): 0.000000 sq. miles (0.000000 sq. km)
Total area (2000): 8.951872 sq. miles (23.185242 sq. km)
FIPS code: 03160
Located within: Missouri (MO), FIPS 29
Location: 38.594820 N, 90.548420 W
ZIP Codes (1990): 63021
Note: some ZIP codes may be omitted esp. for suburbs.
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