ZIP code · Aledo · Illinois · United States
ZIP code 61231 — Aledo
ZIP code 61231 serves Aledo, Illinois.
- Postal code
- 61231Single source Value from one source, not cross-checked.
- City
- Aledo
- County
- Mercer
- State
- Illinois
- Country
- United States
- Coordinates
- 41.2008, -90.7416 — precision precise (locality)
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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