Mason City, IL zip code
Mason City, Illinois uses one zip code: 62664. Most of it is in Mason County. Together these zip codes are home to about 2.9K people.
Zip codes
1
Population
2.9K
All zips combined
Largest zip
62664
2,922 residents
Zip codes in Mason City
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 62664 | 2,922 | $70,509 |