ZIP code · Mason City · Illinois · United States
ZIP code 62664 — Mason City
ZIP code 62664 serves Mason City, Illinois.
- Postal code
- 62664Single source Value from one source, not cross-checked.
- City
- Mason City
- County
- Mason
- State
- Illinois
- Country
- United States
- Coordinates
- 40.2023, -89.6982 — precision precise (locality)
View on OpenStreetMap
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