Delaware County, Ohio

Delaware County
County
Delaware County Courthouse
Delaware County Courthouse
Official seal of Delaware County
Seal
Map of Ohio highlighting Delaware County
Location within the U.S. state of Ohio
Map of the United States highlighting Ohio
Ohio's location within the U.S.
Coordinates: 40°17′N 83°01′W / 40.28°N 83.01°W / 40.28; -83.01
Country United States
State Ohio
FoundedFebruary 10, 1808[1]
Named forthe Delaware Indians
SeatDelaware
Largest cityDelaware
Area
 • Total
457 sq mi (1,180 km2)
 • Land443 sq mi (1,150 km2)
 • Water14 sq mi (40 km2)  3.1%
Population
 (2020)
 • Total
214,124
 • Estimate 
(2022)
226,296 Increase
 • Density470/sq mi (180/km2)
Time zoneUTC−5 (Eastern)
 • Summer (DST)UTC−4 (EDT)
Congressional districts4th, 12th
Websitewww.co.delaware.oh.us
*Based on population just within the county.[2]

Delaware County is a county located in the central portion of the U.S. state of Ohio. As of the 2020 census, the population was 214,124.[3] Its county seat and largest city is Delaware.[4] The county was formed in 1808 from Franklin County, Ohio. Both the county and its seat are named after the Delaware Indian tribe.[5] It is a frequent placeholder on the List of highest-income counties in the United States; Delaware County was listed as the 35th wealthiest county in the United States in 2020.[6][7] Delaware County is included in the Columbus, Ohio, metropolitan area. U.S. President Rutherford B. Hayes was born and raised in Delaware County. It is also home to the Columbus Zoo and Aquarium.

  1. ^ "Ohio County Profiles: Delaware County" (PDF). Ohio Department of Development. Archived (PDF) from the original on May 12, 2014. Retrieved May 11, 2014.
  2. ^ "Delaware County data (population)". Ohio State University Extension Data Center. Retrieved May 10, 2007.[permanent dead link‍]
  3. ^ "U.S. Census Bureau QuickFacts: Hamilton County, Ohio". www.census.gov. United States Census Bureau. Retrieved June 26, 2022.
  4. ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
  5. ^ "Delaware County". Ohio History Central. Ohio Historical Society. Retrieved May 11, 2014.
  6. ^ "Richest counties in the US: Here's where household incomes in each state are the highest". USA Today. Retrieved January 4, 2021.
  7. ^ "These are the richest counties in US". The Columbus Dispatch. Archived from the original on January 26, 2021. Retrieved January 4, 2021.