| Zip Code | City | Population ↓ |
|---|---|---|
| 43452 | Port Clinton | 14,048 |
| 43449 | Oak Harbor | 8,281 |
| 43430 | Genoa | 4,953 |
| 43440 | Lakeside Marblehead | 4,099 |
| 43416 | Elmore | 2,900 |
| 43432 | Graytown | 1,137 |
| 43445 | Martin | 983 |
| 43468 | Williston | 629 |
| 43456 | Put In Bay | 549 |
| 43408 | Clay Center | 355 |
| 43458 | Rocky Ridge | 323 |
| 43446 | Middle Bass | 59 |
| 43433 | Gypsum | 43 |
| 43439 | Lacarne | 39 |
| 43436 | Isle Saint George | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 15 ZCTAs in Ottawa County, Ohio (US Census).