Seneca, IL
ZIP Codes in Seneca, Illinois
January 19, 2026
| ZIP Code | Population | Coordinates |
|---|---|---|
| 61360 | 3,379 | 41.3326, -88.6003 |
Seneca has 1 ZIP code
ZIP Codes in Seneca, Illinois
January 19, 2026
| ZIP Code | Population | Coordinates |
|---|---|---|
| 61360 | 3,379 | 41.3326, -88.6003 |