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Ballwin

1. Ballwin, Missouri, United States [City]; population was 21,816 in 1990; housing units was 8,158 in 1990; location is 38°36'N 90°33'W; land area is 6.31 square miles (4,039 acres); FIPS code is 3160 [SourceCBP]
2. Ballwin, Missouri, United States [Populated Place] is in St. Louis County; location is 38°35'42"N 90°32'46"W; elevation is 659 feet [SourceGSP]
3. Ballwin, Missouri, United States Postal Service Zip Code is 63011 (Bra #1; Manchester; 1st Mo Bank Ellisville; Sherman), 63021 (Main Office Area 2), 63022 (Main Office Boxes) [SourcePSZ]