Delaware County Map, Ohio

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

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

Map of Delaware County, Ohio

Map of Delaware County, Ohio

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

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About Delaware County, Ohio

Delaware County is a county located in the U.S. state of Ohio. It's county seat is Delaware. As per 2020 census, the population of Delaware County is 220740 people and population density is square miles. According to the United States Census Bureau, the county has a total area of 442.41 sq mi (1,146 km2). Delaware County was established on -33510.

Delaware County Facts

ContinentNorth America
CountryUnited States
StateOhio
County SeatDelaware
Largest City/TownDelaware
EstablishedFebruary 10, 1808
Total Area457 sq mi (1,184 sq km)
Land Area443 sq mi (1,147 sq km)
Water Area14 sq mi (36 sq km)
Population214,124 (Census 2020)
Population Density483 people per sq mi
Time ZoneEastern Time Zone (ET)
Major HighwaysI-71, US-23, US-36, State Route 37, State Route 61, State Route 521
Neighboring CountiesMorrow County, Knox County, Licking County, Franklin County, Union County, Marion County
Famous ForAlum Creek State Park, rapid growth, historic downtown Delaware
Top AttractionsAlum Creek State Park, Delaware State Park, Olentangy Caverns, Stratford Ecological Center
Official Websitehttps://co.delaware.oh.us/

Cities and Towns in Delaware County, Ohio

  • Delaware (county seat) – 41,302 (Census 2020)
  • Powell – 13,204 (Census 2020)
  • Sunbury – 6,614 (Census 2020)
  • Westerville (partly) – 39,190 (Census 2020)

Roads and Highways in Delaware County, Ohio

Delaware County has a well-developed road system that connects it directly to Columbus and other parts of central Ohio.

  • I-71 – major north-south interstate connecting Columbus to Cleveland through the county
  • US-23 – runs north-south linking Delaware to Columbus and northern Ohio
  • US-36 – east-west route connecting Delaware to Newark and Marysville
  • State Route 37 – connects Delaware to Granville and other nearby towns
  • State Route 61 – north-south route linking Sunbury to Mount Gilead
  • State Route 521 – connects Delaware to eastern rural communities

Neighboring Counties of Delaware County

  • Marion County (north)
  • Morrow County (northeast)
  • Knox County (east)
  • Licking County (southeast)
  • Franklin County (south)
  • Union County (west)

Top Attractions in Delaware County, Ohio

Delaware County offers a mix of outdoor recreation, natural attractions, and family-friendly destinations.

  • Alum Creek State Park – large park with boating, beaches, and camping areas
  • Delaware State Park – peaceful spot for fishing, hiking, and picnicking
  • Olentangy Caverns – unique cave system with tours and outdoor activities
  • Stratford Ecological Center – working farm and nature education center
  • Historic Downtown Delaware – charming area with shops, dining, and events
  • Alum Creek Beach – one of the largest inland beaches in Ohio
  • Highbanks Metro Park – scenic park with trails and river overlooks
  • Gallant Woods Park – nature preserve with trails and wildlife viewing

Distance from Delaware County to Nearby Cities

  • Delaware County to Columbus – 25 mi (40 km)
  • Delaware County to Newark – 35 mi (56 km)
  • Delaware County to Mansfield – 45 mi (72 km)
  • Delaware County to Dayton – 80 mi (129 km)
  • Delaware County to Cleveland – 115 mi (185 km)

FAQs about Delaware County

Where is Delaware County located?

Delaware County is located in central Ohio, just north of Columbus.

What is Delaware County known for?

It is known for rapid growth, outdoor parks, and a historic downtown area.

What is the population of Delaware County?

The population was 214,124 in the 2020 Census.

What is the largest city in Delaware County?

Delaware is the largest city and also the county seat.

Are there outdoor attractions in Delaware County?

Yes, the county offers parks, lakes, trails, and nature centers.