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Whiteside County, Illinois Zip Codes
Zip Code
City
Population
61081
Sterling
21,138
61071
Rock Falls
13,766
61270
Morrison
7,096
61252
Fulton
5,424
61277
Prophetstown
2,978
61250
Erie
2,713
61283
Tampico
1,422
61230
Albany
932
61261
Lyndon
644
61251
Fenton
382
61243
Deer Grove
277
61037
Galt
105
Population is the most recent figure from the U.S. Census Bureau's 2022
American Community Survey (ACS) 5-Year Estimates
.