Mason, OH zip code
Mason, Ohio uses one zip code: 45040. Most of it is in Warren County. Together these zip codes are home to about 60K people.
Zip codes
1
Population
60K
All zips combined
Largest zip
45040
59,518 residents
Zip codes in Mason
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 45040 | 59,518 | $133,240 |