Winnebago County, Illinois ZIP codes
28 ZIP codes are in Winnebago County, plus 6 that cross in from neighboring counties. It's part of the Rockford, IL metro area.
- ZIP codes
- 28
- Population in these ZIPs
- 285,063
- Avg. median income
- $68,600population-weighted
- Cities & towns
- 12
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Winnebago County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 61016 | Cherry Valley | 5,465 | $84,883 | $295,000 |
| 61024 | Durand | 2,318 | $70,750 | $225,400 |
| 61063 | Pecatonica | 4,011 | $84,276 | $236,000 |
| 61072 | Rockton | 11,285 | $104,938 | $298,300 |
| 61073 | Roscoe | 20,194 | $102,064 | $315,800 |
| 61077 | Seward | 97 | — | — |
| 61079 | Shirland | 210 | $46,367 | $123,200 |
| 61080 | South Beloit | 10,955 | $76,579 | $242,500 |
| 61088 | Winnebago | 6,167 | $98,088 | $283,200 |
| 61101 | Rockford | 19,318 | $46,163 | $114,700 |
| 61102 | Rockford | 15,937 | $46,599 | $122,000 |
| 61103 | Rockford | 22,869 | $51,161 | $152,200 |
| 61104 | Rockford | 17,222 | $33,772 | $114,000 |
| 61105 PO Box | Rockford | — | — | — |
| 61106 PO Box | Rockford | — | — | — |
| 61107 | Rockford | 30,765 | $78,574 | $225,700 |
| 61108 | Rockford | 30,355 | $64,415 | $192,800 |
| 61109 | Rockford | 26,768 | $62,973 | $195,900 |
| 61110 PO Box | Rockford | — | — | — |
| 61111 | Loves Park | 23,286 | $61,393 | $206,400 |
| 61112 | Rockford | 152 | $40,563 | — |
| 61114 | Rockford | 15,325 | $85,568 | $271,500 |
| 61115 | Machesney Park | 22,364 | $75,363 | $209,500 |
| 61125 PO Box | Rockford | — | — | — |
| 61126 PO Box | Rockford | — | — | — |
| 61130 PO Box | Loves Park | — | — | — |
| 61131 PO Box | Loves Park | — | — | — |
| 61132 PO Box | Loves Park | — | — | — |
ZIP codes partly in Winnebago County
These ZIP codes are mostly in a neighboring county but cover part of Winnebago County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 61008 | Belvidere | Boone County | 33,582 | $76,604 | $264,400 |
| 61011 | Caledonia | Boone County | 2,676 | $127,273 | $380,600 |
| 61019 | Davis | Stephenson County | 3,461 | $105,150 | $271,100 |
| 61020 | Davis Junction | Ogle County | 3,149 | $105,769 | $291,700 |
| 61047 | Leaf River | Ogle County | 1,622 | $86,056 | $233,800 |
| 61084 | Stillman Valley | Ogle County | 3,201 | $102,817 | $294,700 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Winnebago County
Nearby counties
Frequently asked questions
How many ZIP codes are in Winnebago County, Illinois?
28 ZIP codes are mainly in Winnebago County, and 6 more ZIP codes from neighboring areas reach partly into it.
What cities are in Winnebago County?
ZIP codes in Winnebago County use the city names Cherry Valley, Durand, Loves Park, Machesney Park, Pecatonica, Rockford, Rockton, Roscoe, Seward, Shirland, South Beloit and Winnebago.
What metro area is Winnebago County in?
Winnebago County is part of the Rockford, IL metropolitan statistical area.