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Where am ILOCATED

Ottawa County, Ohio

Ottawa County, Ohio, has 39,481 residents (July 2025 estimate). Its county seat is Port Clinton. It uses Eastern Time and covers 255 sq mi (660 km²) of land.

ColumbusClevelandCincinnati
Ottawa County in Ohio
Lucas CountyPort ClintonOak HarborGenoaElmoreCurtice
Ottawa County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
39,481
Land area
255 sq mi (660 km²)
County seat or government
Port Clinton
Time zone
Eastern TimeUTC-05:00 in January; UTC-04:00 in July
Median household income
$76,101 ± $3,220
Median home value
$219,900 ± $7,998
Median rent, with utilities
$930 ± $34
Homes lived in by their owners
83.6% ± 1.8 points
County type
County
Metro or micro area
Sandusky, OH metro areaCentral county
Water area
330 sq mi (856 km²)
State
Ohio
County code (FIPS)
39123
Coordinates (central point)
41.545495, -83.012613
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Ottawa County

Time zoneLocal time and UTC offsetNext clock change
Eastern TimeAmerica/New_YorkUTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 4342029,520 people
  2. 4345214,264 people
  3. 434497,572 people
  4. 434304,911 people
  5. 434404,222 people
  6. 434124,175 people
  7. 434473,348 people
  8. 434692,905 people
  9. 434162,868 people
  10. 434321,357 people
  11. 43442824 people
  12. 43445801 people
All 20
  1. 43456692 people
  2. 43468459 people
  3. 43408386 people
  4. 43458282 people
  5. 4344635 people
  6. 434330 people
  7. 434360 people
  8. 434390 people

20 ZIP Code areas overlap Ottawa County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Townships in Ottawa County, largest first

  1. Salem Township5,267 people
  2. Danbury Township4,894 people
  3. Clay Township4,762 people
  4. Allen Township3,738 people
  5. Catawba Island Township3,671 people
  6. Harris Township2,902 people
  7. Benton Township2,259 people
  8. Carroll Township1,899 people
  9. Portage Township1,541 people
  10. Erie Township1,251 people
  11. Bay Township1,113 people
  12. Put-in-Bay Township727 people

People counts are American Community Survey 2020–2024 5-year estimates. All townships in Ohio, by county

School districts in Ottawa County, largest first

  1. Port Clinton City School District13,536 people
  2. Lake Local School District (Wood County)11,521 people
  3. Benton-Carroll-Salem Local School District9,458 people
  4. Genoa Area Local School District8,319 people
  5. Woodmore Local School District6,445 people
  6. Danbury Local School District4,894 people
  7. Put-in-Bay Local School District684 people
  8. Middle Bass Local School District43 people
  9. North Bass Local School District0 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Port Clinton, Ohio (city)5,970 people
  2. Oak Harbor, Ohio (village)2,314 people
  3. Genoa, Ohio (village)1,872 people
  4. Elmore, Ohio (village)1,643 people
  5. Curtice, Ohio (CDP)1,535 people
  6. Marblehead, Ohio (village)876 people
  7. Lakeside, Ohio (CDP)508 people
  8. Clay Center, Ohio (village)388 people
  9. Williston, Ohio (CDP)287 people
  10. Rocky Ridge, Ohio (village)282 people
  11. Put-in-Bay, Ohio (village)126 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Sandusky County, Ohio15 mi southwest
  2. Erie County, Ohio24 mi southeast
  3. Lucas County, Ohio25 mi west
  4. Wood County, Ohio34 mi west

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.