Greene County, Ohio

county in Ohio, United States

Greene County is a county of Ohio in the United States. In 2020, 167,966 people lived there.[2] Its county seat is Xenia.[3] It was named for General Nathanael Greene,[4] an officer in the Revolutionary War.

Greene County
The Greene County Courthouse in Xenia
The Greene County Courthouse in Xenia
Official seal of Greene County
Map of Ohio highlighting Greene County
Location within the U.S. state of Ohio
Map of the United States highlighting Ohio
Ohio's location within the U.S.
Coordinates: 39°41′N 83°53′W / 39.69°N 83.89°W / 39.69; -83.89
Country United States
State Ohio
FoundedMay 1, 1803[1]
Named forGeneral Nathanael Greene
Largest cityBeavercreek
 • Total416 sq mi (1,080 km2)
 • Land414 sq mi (1,070 km2)
 • Water2.5 sq mi (6 km2)  0.6%
 • Total167,966
 • Density400/sq mi (160/km2)
Time zoneUTC−5 (Eastern)
 • Summer (DST)UTC−4 (EDT)
Congressional district10th


  1. "Ohio County Profiles: Greene County" (PDF). Ohio Department of Development. Archived from the original (PDF) on June 21, 2007. Retrieved April 28, 2007.
  2. "QuickFacts: Greene County, Ohio". United States Census Bureau. Retrieved January 18, 2024.
  3. National Association of Counties. "NACo County Explorer". Retrieved January 18, 2024.
  4. Gannett, Henry (1905). The Origin of some Place Names in the United States. Govt. Print. Off. p. 143.