There are 12 zip codes in Whiteside County, Illinois. The most populated is 61081, located in Sterling. * 2024 populations estimated based on the latest ACS 5-year data.

CSV JSON

Download Table Data

Enter your email below, and you'll receive this table's data in your inbox momentarily.

Zip Code
City
Population
61081Sterling21,138
61071Rock Falls13,766
61270Morrison7,096
61252Fulton5,424
61277Prophetstown2,978
61250Erie2,713
61283Tampico1,422
61230Albany932
61261Lyndon644
61251Fenton382
61243Deer Grove277
61037Galt105

Whiteside County, Illinois Zip Codes by Population (2024)