Rockford, IL ZIP Codes
Rockford, Illinois has 14 ZIP codes: 9 for street addresses (, , , , , and 3 more) and 5 for PO boxes.
Your street decides which one you use.
Which Rockford ZIP code is my address in?
Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?
Rockford ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
61105, 61106, 61110, 61125 and 61126 have no area on the map: they are PO box or single-organization ZIP codes. Dashed line: Rockford city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Rockford ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 61101 | street delivery Kilburn Rockford |
| 61102 | street delivery Kilburn Rockford |
| 61103 | street delivery Kilburn Rockford |
| 61104 | street delivery Rockford Sorting and Delivery Center |
| 61105 | PO boxes at the Downtown Rockford post office Downtown Rockford |
| 61106 | PO boxes at the Broadway post office Broadway |
| 61107 | street delivery Rockford Sorting and Delivery Center |
| 61108 | street delivery Rockford Sorting and Delivery Center |
| 61109 | street delivery Rockford Sorting and Delivery Center |
| 61110 | PO boxes at the East Rockford post office East Rockford |
| 61112 | street delivery Rockford Sorting and Delivery Center |
| 61114 | street delivery Rockford Sorting and Delivery Center |
| 61125 | PO boxes at the Rockford Sorting and Delivery Center post office Rockford Sorting and Delivery Center |
| 61126 | PO boxes at the Rockford Sorting and Delivery Center post office Rockford Sorting and Delivery Center |
ZIP codes from nearby towns that reach into Rockford
- 61020, mailing town Davis Junction, covers 4 percent of Rockford
Why your mail may say Rockford when you live outside it
Rockford ZIP codes also cover Owen Township, Rockford Township and Cherry Valley Township, so a letter addressed to Rockford can go to a home outside the city limits.
The reverse happens too: parts of Rockford use 61020, which mails under a neighboring town's name.
A ZIP code does not set your city, school district or tax. Winnebago County property records show which city you are in.
Rockford ZIP code questions
What is the main ZIP code for Rockford?
61104, the ZIP code of the main Rockford Sorting and Delivery Center post office at 5225 Harrison Ave.
Which Rockford ZIP codes are for PO boxes only?
61105, 61106, 61110, 61125 and 61126. Mail to them goes to boxes at the post office, not to street addresses.
What county is Rockford in?
Winnebago County.
ZIP codes for towns near Rockford
More towns near Rockford: Elgin, St. Charles, Streamwood, Hoffman Estates, Bartlett, Hanover Park, Aurora, Schaumburg, Palatine.
Sources and last checked
USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.
Checked October 20, 2026. Sources · How we build our lists · Corrections