Ottawa County, Ohio ZIP codes
15 ZIP codes are in Ottawa County, plus 5 that cross in from neighboring counties. It's part of the Sandusky, OH metro area.
- ZIP codes
- 15
- Population in these ZIPs
- 37,849
- Avg. median income
- $75,700population-weighted
- Cities & towns
- 15
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Ottawa County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 43408 | Clay Center | 386 | $61,719 | $117,800 |
| 43416 | Elmore | 2,868 | $88,611 | $224,700 |
| 43430 | Genoa | 4,911 | $73,807 | $210,800 |
| 43432 | Graytown | 1,357 | $152,411 | $260,900 |
| 43433 | Gypsum | 0 | — | — |
| 43436 | Isle Saint George | 0 | — | — |
| 43439 | Lacarne | 0 | — | — |
| 43440 | Lakeside Marblehead | 4,222 | $74,818 | $380,900 |
| 43445 | Martin | 801 | $82,670 | $225,600 |
| 43446 | Middle Bass | 35 | — | $303,500 |
| 43449 | Oak Harbor | 7,572 | $71,083 | $212,000 |
| 43452 | Port Clinton | 14,264 | $67,490 | $282,600 |
| 43456 | Put In Bay | 692 | $72,969 | $443,600 |
| 43458 | Rocky Ridge | 282 | $78,906 | $97,100 |
| 43468 | Williston | 459 | $130,533 | $206,400 |
ZIP codes partly in Ottawa County
These ZIP codes are mostly in a neighboring county but cover part of Ottawa County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 43412 | Curtice | Lucas County | 4,175 | $107,885 | $209,100 |
| 43420 | Fremont | Sandusky County | 29,520 | $61,331 | $178,600 |
| 43442 | Lindsey | Sandusky County | 824 | $61,667 | $185,000 |
| 43447 | Millbury | Wood County | 3,348 | $89,643 | $229,900 |
| 43469 | Woodville | Sandusky County | 2,905 | $86,410 | $225,500 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Ottawa County
Nearby counties
Frequently asked questions
How many ZIP codes are in Ottawa County, Ohio?
15 ZIP codes are mainly in Ottawa County, and 5 more ZIP codes from neighboring areas reach partly into it.
What cities are in Ottawa County?
ZIP codes in Ottawa County use the city names Clay Center, Elmore, Genoa, Graytown, Gypsum, Isle Saint George, Lacarne, Lakeside Marblehead, Martin, Middle Bass, Oak Harbor and Port Clinton and others.
What metro area is Ottawa County in?
Ottawa County is part of the Sandusky, OH metropolitan statistical area.