ZIP CodesZIP codes in Ohio County, Kentucky
Ohio County, Kentucky has 11 ZIP codes in this list, from 42320 to 42370. They cover 11 places, among them Beaver Dam, Centertown, Cromwell and Dundee.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 42320 | Beaver Dam | 149 | 37.387, -86.873 |
| 42328 | Centertown | 64.1 | 37.408, -87.009 |
| 42333 | Cromwell | 36.1 | 37.342, -86.770 |
| 42338 | Dundee | 3.1 | 37.552, -86.778 |
| 42343 | Fordsville | 77.8 | 37.630, -86.726 |
| 42347 | Hartford | 122 | 37.478, -86.918 |
| 42349 | Horse Branch | 56.2 | 37.423, -86.699 |
| 42354 | Mc Henry | 0.8 | 37.378, -86.930 |
| 42361 | Olaton | 37.9 | 37.526, -86.688 |
| 42369 | Rockport | 3.0 | 37.355, -87.007 |
| 42370 | Rosine | 0.1 | 37.449, -86.739 |
The ZIP code areas of Ohio County add up to about 550 square miles of land (1,423 sq km) as the Census Bureau draws them. The largest is 42320 (Beaver Dam), with 149 square miles.
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Beaver Dam, KY 42320.
- 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.