Cedar Falls, IA -- U.S. city in Iowa Population (2000): 36145 Housing Units (2000): 13271 Land area (2000): 28.299987 sq. miles (73.296627 sq. km) Water area (2000): 0.585068 sq. miles (1.515320 sq. km) Total area (2000): 28.885055 sq. miles (74.811947 sq. km) FIPS code: 11755 Located within: Iowa (IA), FIPS 19 Location: 42.523520 N, 92.446402 W ZIP Codes (1990): 50613 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Cedar Falls, IA Cedar Falls