Monmouth, IL zip code
Monmouth, Illinois uses one zip code: 61462. Most of it is in Warren County. Together these zip codes are home to about 10K people.
Zip codes
1
Population
10K
All zips combined
Largest zip
61462
10,458 residents
Zip codes in Monmouth
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 61462 | 10,458 | $64,113 |