ZIP code · Rockford · Illinois · United States
ZIP code 61105 — Rockford
ZIP code 61105 serves Rockford, Illinois.
- Postal code
- 61105Single source Value from one source, not cross-checked.
- City
- Rockford
- County
- Winnebago
- State
- Illinois
- Country
- United States
- Coordinates
- 42.2711, -89.0940 — precision precise (locality)
View on OpenStreetMap - Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
- Area codes
- 815, 779Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames. Data generated on 2026-08-21. Methodology · Report an error on this page