Seneca, IL zip code
Seneca, Illinois uses one zip code: 61360. Most of it is in LaSalle County. Together these zip codes are home to about 3.6K people.
Zip codes
1
Population
3.6K
All zips combined
Largest zip
61360
3,610 residents
Zip codes in Seneca
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 61360 | 3,610 | $95,093 |