Delaware County, Ohio

Delaware County
County
Delaware County Courthouse
Seal
Location within the U.S. state of 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
Founded	February 10, 1808[1]
Named for	the Delaware Indians
Seat	Delaware
Largest city	Delaware*
Area
• Total	457 sq mi (1,180 km2)
• Land	443 sq mi (1,150 km2)
• Water	14 sq mi (40 km2)  3.1%
Population  (2020)
• Total	214,124
• Density	470/sq mi (180/km2)
Time zone	UTC−5 (Eastern)
• Summer (DST)	UTC−4 (EDT)
Congressional districts	4th, 12th
Website	www.co.delaware.oh.us
*Based on population just within the county.[2]

Delaware County is a county in the U.S. state of Ohio. As of the 2020 census, the population was 214,124.^[3] Its county seat is Delaware.^[4]

1. ↑ "Ohio County Profiles: Delaware County" (PDF). Ohio Department of Development. Archived (PDF) from the original on 2014-05-12. Retrieved May 11, 2014.
2. ↑ "Delaware County data (population)". Ohio State University Extension Data Center. Retrieved May 10, 2007.^{[permanent dead link]}
3. ↑ "QuickFacts: Delaware County, Ohio". United States Census Bureau. Retrieved January 18, 2024.
4. ↑ National Association of Counties. "NACo County Explorer". Retrieved January 18, 2024.