15 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 43452 | Port Clinton | 14,264 |
| 43449 | Oak Harbor | 7,572 |
| 43430 | Genoa | 4,911 |
| 43440 | Lakeside Marblehead | 4,222 |
| 43416 | Elmore | 2,868 |
| 43432 | Graytown | 1,357 |
| 43445 | Martin | 801 |
| 43456 | Put In Bay | 692 |
| 43468 | Williston | 459 |
| 43408 | Clay Center | 386 |
| 43458 | Rocky Ridge | 282 |
| 43446 | Middle Bass | 35 |
| 43433 | Gypsum | 0 |
| 43436 | Isle Saint George | 0 |
| 43439 | Lacarne | 0 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 15 ZCTAs in Ottawa County, Ohio (US Census).