County ProfileOH
Ottawa County
Population: 40,364 · 16 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
40,364
People
Median age
50.6
Housing
Total households
18,504
Income
Median household income
$76,101
Housing
Total housing units
28,911
Employment
Employment rate
55.5%
Education
Bachelor’s degree or higher
29.5%
Healthcare
Insured population
96.1%
County details
Local time 05:43:09(ET)| Name | Ottawa |
|---|---|
| Total ZIP codes | 16total |
| ZIP codes (by type) | 9 Standard7 PO Box |
| Area code | 419, 567 |
| Timezone | Eastern Time (ET) |
| Coordinates | 41.5454953, -83.0126127 |
| Land area | 254.7 sq miles(659.6 km²) |
Map of Ottawa county, Ohio with ZIP codes
Cities and Communities in Ottawa County
Compare the largest cities in Ottawa County by population, median income, and growth. Use the table below to analyze key demographic shifts across the region.
| City | Population | Median incomeHousehold | ZIP codes |
|---|---|---|---|
| Port Clinton | 6,025 | $60,909 | 1ZIPs |
| Lakeside Marblehead | 4,665 | — | 1ZIPs |
| Oak Harbor | 2,821 | $46,211 | 1ZIPs |
| Genoa | 2,232 | $65,550 | 1ZIPs |
| Curtice | 1,552 | $104,226 | 1ZIPs |
| Elmore | 1,370 | $84,554 | 1ZIPs |
| Graytown | 1,354 | — | 1ZIPs |
| Martin | 1,188 | — | 1ZIPs |
| Williston | 439 | $46,731 | 1ZIPs |
| Rocky Ridge | 312 | $78,906 | 1ZIPs |
| Clay Center | 262 | $61,875 | 1ZIPs |
| Put in Bay | 154 | $63,750 | 1ZIPs |
| Middle Bass | 118 | — | 1ZIPs |
| Gypsum | 101 | — | 1ZIPs |
| Lacarne | 62 | — | 1ZIPs |
| Isle Saint George | 10 | — | 1ZIPs |
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in Ottawa County
Review the most populated postal areas across Ottawa County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
| ZIP | City | Median incomeHousehold | Population (ZIP) |
|---|---|---|---|
| 43452 | Port Clinton | $67,490 | 13,443 |
| 43449 | Oak Harbor | $71,083 | 8,057 |
| 43440 | Lakeside Marblehead | $74,818 | 4,665 |
| 43430 | Genoa | $73,807 | 4,631 |
| 43412 | Curtice | $107,885 | 4,033 |
| 43416 | Elmore | $88,611 | 2,769 |
| 43432 | Graytown | $152,411 | 1,354 |
| 43445 | Martin | $82,670 | 1,188 |
| 43456 | Put in Bay | $72,969 | 678 |
| 43468 | Williston | $130,533 | 565 |
| 43458 | Rocky Ridge | $78,906 | 312 |
| 43408 | Clay Center | $61,719 | 251 |
| 43446 | Middle Bass | — | 118 |
| 43433 | Gypsum | — | 101 |
| 43439 | Lacarne | — | 62 |
| 43436 | Isle Saint George | — | 10 |
Data Sources & Citations
The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:
- United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
- United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS