Winnebago County, IL Zip Code and Maps
Winnebago County has 17 zip codes. See all zip codes in List View or use the map below to review.
Winnebago County Zip Codes by Population
61103 24,34161115 23,10061101 22,27261104 18,69461072 11,43161024 2,27261079 15661112 10061077 296110561106611106112561126611306113161132