Putnam County Map, Ohio

Written and Fact-checked by | Updated On: April 30, 2026 | 13:31 ET

Map of Putnam County - Putnam County is a county located in the U.S. state of Ohio. Putnam County Map showing cities, highways, important places and water bodies. Get Where is Putnam County located in the map, major cities in Putnam county, population, areas, and places of interest.

Map of Putnam County, Ohio

Map of Putnam County, Ohio

About Putnam County Map, Ohio: The map showing the county boundary, county seat, major cities, highways, water bodies and neighbouring counties.

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About Putnam County, Ohio

Putnam County is a county located in the U.S. state of Ohio. It's county seat is Ottawa. As per 2020 census, the population of Putnam County is 34318 people and population density is square miles. According to the United States Census Bureau, the county has a total area of 483.87 sq mi (1,253 km2). Putnam County was established on -29127.

Putnam County Facts

ContinentNorth America
CountryUnited States
StateOhio
County SeatOttawa
Largest City/TownOttawa
EstablishedApril 1, 1820
Total Area484 sq mi (1,253 sq km)
Land Area483 sq mi (1,251 sq km)
Water Area1.8 sq mi (4.7 sq km)
Population34,451 (Census 2020)
Population Density71 people per sq mi
Time ZoneEastern Time Zone (ET)
Major HighwaysUS-224, State Route 15, State Route 12, State Route 65, State Route 189
Neighboring CountiesHenry County, Hancock County, Allen County, Van Wert County, Defiance County
Famous ForAgriculture, rural communities, Blanchard River
Top AttractionsOttawa Metro Park, Putnam County Fairgrounds, Blanchard River, Gilboa Quarry
Official Websitehttps://putnamcountyohio.gov/

Cities and Towns in Putnam County, Ohio

  • Ottawa (county seat) – 4,485 (Census 2020)
  • Columbus Grove – 2,140 (Census 2020)
  • Leipsic – 2,260 (Census 2020)
  • Ottoville – 972 (Census 2020)

Roads and Highways in Putnam County, Ohio

Putnam County is connected by highways that link it to northwest Ohio and surrounding rural communities.

  • US-224 – major east-west route connecting Ottawa to Findlay and Van Wert
  • State Route 15 – runs through the county linking Ottawa to Defiance and Lima
  • State Route 12 – connects Columbus Grove to Findlay and surrounding areas
  • State Route 65 – runs north-south along the Blanchard River
  • State Route 189 – links Ottawa to nearby towns and farmland

Neighboring Counties of Putnam County

  • Henry County (north)
  • Hancock County (east)
  • Allen County (south)
  • Van Wert County (southwest)
  • Defiance County (west)

Top Attractions in Putnam County, Ohio

Putnam County offers outdoor recreation, small-town charm, and local heritage.

  • Ottawa Metro Park – popular for walking, fishing, and picnicking
  • Blanchard River – scenic river for outdoor activities
  • Putnam County Fairgrounds – hosts annual fairs and community events
  • Gilboa Quarry – unique geological site and fishing area
  • Leipsic village area – charming community with local shops
  • Columbus Grove parks – recreational spaces and green areas
  • Ottoville community – small-town atmosphere and local events
  • Rural countryside – scenic farmland and quiet landscapes

Distance from Putnam County to Nearby Cities

  • Putnam County to Findlay – 30 mi (48 km)
  • Putnam County to Lima – 20 mi (32 km)
  • Putnam County to Toledo – 70 mi (113 km)
  • Putnam County to Columbus – 110 mi (177 km)
  • Putnam County to Fort Wayne – 70 mi (113 km)

FAQs about Putnam County

Where is Putnam County located?

Putnam County is located in northwestern Ohio.

What is Putnam County known for?

It is known for agriculture, rural communities, and the Blanchard River.

What is the population of Putnam County?

The population was 34,451 according to the 2020 Census.

What is the county seat of Putnam County?

The county seat is Ottawa.

Are there attractions in Putnam County?

Yes, the county offers parks, rivers, and community events.