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Rock Falls

1. Mason City, Iowa, United States Postal Service Zip Code is 50467 (Rock Falls) [SourcePSZ]
2. Mondovi, Wisconsin, United States Postal Service Zip Code is 54764 (Rock Falls) [SourcePSZ]
3. Rock Falls, Illinois, United States [City]; population was 9,654 in 1990; housing units was 3,891 in 1990; location is 41°46'N 89°41'W; land area is 3.02 square miles (1,935 acres); water area is 0.11 square miles (73 acres); FIPS code is 64928 [SourceCBP]
4. Rock Falls, Illinois, United States [Populated Place] is in Whiteside County; location is 41°46'47"N 89°41'20"W; elevation is 641 feet [SourceGSP]
5. Rock Falls, Illinois, United States Postal Service Zip Code is 61058 (Nelson), 61071 [SourcePSZ]
6. Rock Falls, Iowa, United States [City]; population was 130 in 1990; housing units was 56 in 1990; location is 43°12'N 93°5'W; land area is 0.20 square miles (130 acres); FIPS code is 68025 [SourceCBP]
7. Rock Falls, Iowa, United States [Populated Place] is in Cerro Gordo County; location is 43°12'27"N 93°5'4"W [SourceGSP]
8. Rock Falls, Wisconsin, United States [Place] is in Dunn County; location is 44°43'7"N 91°41'23"W; elevation is 861 feet [SourceGSP]