Zip code : 50467 Official USPS city name : Rock Falls Official USPS state code : IA Official state name : Iowa zcta : TRUE Population : 89.0 Density : 125.4 Primary official county code : 19033 Primary official county name : Cerro Gordo Counterweights …
Rock Falls IL Illinois Zip code
Zip code : 61071 Official USPS city name : Rock Falls Official USPS state code : IL Official state name : Illinois zcta : TRUE Population : 13982.0 Density : 75.9 Primary official county code : 17195 Primary official county name : Whiteside Counterweights : …