ZIP CodesZIP codes in Warren County, Ohio
Warren County, Ohio has 12 ZIP codes in this list, from 45005 to 45162. They cover 12 places, among them Franklin, Harveysburg, Kings Mills and Lebanon.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 45005 | Franklin | 36.6 | 39.536, -84.303 |
| 45032 | Harveysburg | 0.4 | 39.501, -84.007 |
| 45034 | Kings Mills | 0.7 | 39.358, -84.247 |
| 45036 | Lebanon | 81.1 | 39.429, -84.174 |
| 45039 | Maineville | 15.6 | 39.317, -84.244 |
| 45040 | Mason | 28.5 | 39.336, -84.315 |
| 45054 | Oregonia | 31.1 | 39.414, -84.051 |
| 45065 | South Lebanon | 2.9 | 39.371, -84.211 |
| 45066 | Springboro | 20.4 | 39.563, -84.229 |
| 45068 | Waynesville | 70.6 | 39.529, -84.082 |
| 45152 | Morrow | 48.7 | 39.348, -84.118 |
| 45162 | Pleasant Plain | 23.9 | 39.288, -84.097 |
The ZIP code areas of Warren County add up to about 360 square miles of land (934 sq km) as the Census Bureau draws them. The largest is 45036 (Lebanon), with 81.1 square miles.
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Franklin, OH 45005.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.