Warren County, Ohio ZIP Codes
- ZIP records
12 - Cities represented
12 - Sum of listed ZIP population estimates
230,451
Population sum includes positive estimates in these ZIP records; it is not an official county population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | Population estimate |
|---|---|---|---|
| 1 | 45040 | Mason | 59,518 |
| 2 | 45036 | Lebanon | 42,204 |
| 3 | 45005 | Franklin | 32,251 |
| 4 | 45039 | Maineville | 28,335 |
| 5 | 45066 | Springboro | 27,545 |
| 6 | 45152 | Morrow | 14,850 |
| 7 | 45068 | Waynesville | 11,597 |
| 8 | 45065 | South Lebanon | 7,053 |
| 9 | 45162 | Pleasant Plain | 2,754 |
| 10 | 45054 | Oregonia | 2,693 |
Cities in Warren County
- Franklin
- Harveysburg
- Kings Mills
- Lebanon
- Maineville
- Mason
- Morrow
- Oregonia
- Pleasant Plain
- South Lebanon
- Springboro
- Waynesville
ZIP Directory
- ZIP 45005
- ZIP 45032
- ZIP 45034
- ZIP 45036
- ZIP 45039
- ZIP 45040
- ZIP 45054
- ZIP 45065
- ZIP 45066
- ZIP 45068
- ZIP 45152
- ZIP 45162
Methodology: Records are grouped by the source file's listed county and state. Population sums add positive ZIP-level estimates and are not official county totals; city counts use distinct city labels in the source.