City · Illinois · United States
Seneca, IL — ZIP codes
1 ZIP code · LaSalle County
- City
- Seneca
- County
- LaSalle
- State
- Illinois
- Country
- United States
- Postal code
- 61360Single source
- Coordinates
- 41.3152, -88.6100 View on OpenStreetMap
ZIP codes (1)
| Postal code | Place name | Verification |
|---|---|---|
| 61360 | Seneca | Single source |
Sources and verification
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. Last generated : 2026-08-21. Report an error.