Marion County Map, Ohio

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

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

Map of Marion County, Ohio

Map of Marion County, Ohio

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

Ohio More Maps & Info

Ohio MapOhio County MapOhio Cities Map
Ohio ZipcodesWhere is OhioWhere is Akron
Ohio Area CodesOhio Blank MapOhio River Map
Ohio Physical MapOhio Road MapWhere is Cincinnati
Where is Cleveland/a>Where is ColumbusWhere is Toledo

About Marion County, Ohio

Marion County is a county located in the U.S. state of Ohio. It's county seat is Marion. As per 2020 census, the population of Marion County is 65291 people and population density is square miles. According to the United States Census Bureau, the county has a total area of 403.84 sq mi (1,046 km2). Marion County was established on -29127.

Marion County Facts

ContinentNorth America
CountryUnited States
StateOhio
County SeatMarion
Largest City/TownMarion
EstablishedFebruary 20, 1820
Total Area404 sq mi (1,047 sq km)
Land Area403 sq mi (1,044 sq km)
Water Area1.5 sq mi (3.9 sq km)
Population65,359 (Census 2020)
Population Density162 people per sq mi
Time ZoneEastern Time Zone (ET)
Major HighwaysUS-23, State Route 4, State Route 95, State Route 98, State Route 309
Neighboring CountiesHardin County, Wyandot County, Crawford County, Morrow County, Delaware County, Union County
Famous ForPresident Warren G. Harding, agriculture, rail history
Top AttractionsHarding Home and Memorial, Marion Tallgrass Trail, Wyandot Popcorn Museum, Quarry Park
Official Websitehttps://www.co.marion.oh.us/

Cities and Towns in Marion County, Ohio

  • Marion (county seat) – 36,837 (Census 2020)
  • Caledonia – 490 (Census 2020)
  • La Rue – 735 (Census 2020)
  • Prospect – 1,025 (Census 2020)

Roads and Highways in Marion County, Ohio

Marion County is served by several highways that connect it to central and northern Ohio.

  • US-23 – major north-south route linking Marion to Columbus and Toledo
  • State Route 4 – connects Marion to Bucyrus and Sandusky
  • State Route 95 – east-west route connecting Marion to Mount Gilead and Kenton
  • State Route 98 – runs north-south linking Marion to Bucyrus and Richwood
  • State Route 309 – connects Marion to Kenton and Ontario

Neighboring Counties of Marion County

  • Hardin County (northwest)
  • Wyandot County (north)
  • Crawford County (northeast)
  • Morrow County (east)
  • Delaware County (south)
  • Union County (southwest)

Top Attractions in Marion County, Ohio

Marion County offers historic sites, parks, and local attractions centered around its rich heritage.

  • Harding Home and Memorial – historic site of President Warren G. Harding
  • Marion Tallgrass Trail – scenic trail for walking and biking
  • Wyandot Popcorn Museum – unique museum dedicated to popcorn history
  • Quarry Park – popular park with trails, lake, and climbing areas
  • Marion Palace Theatre – historic theater with events and performances
  • Lincoln Park – community park with recreational facilities
  • Heritage Hall – museum showcasing local history
  • Downtown Marion – historic area with shops and dining

Distance from Marion County to Nearby Cities

  • Marion County to Columbus – 50 mi (80 km)
  • Marion County to Toledo – 85 mi (137 km)
  • Marion County to Mansfield – 30 mi (48 km)
  • Marion County to Lima – 60 mi (97 km)
  • Marion County to Cleveland – 100 mi (161 km)

FAQs about Marion County

Where is Marion County located?

Marion County is located in north-central Ohio.

What is Marion County known for?

It is known for President Warren G. Harding, agriculture, and local history.

What is the population of Marion County?

The population was 65,359 according to the 2020 Census.

What is the county seat of Marion County?

The county seat is Marion.

Are there attractions in Marion County?

Yes, the county has historic sites, museums, and parks.