Knox County, Ohio

Knox County
The Knox County Courthouse in 2013
Flag of Knox County
Official seal of Knox County
Map of Ohio highlighting Knox 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°23′N 82°28′W / 40.38°N 82.47°W / 40.38; -82.47
Country United States
State Ohio
FoundedMarch 1, 1808[1]
Named forHenry Knox
SeatMount Vernon
Largest cityMount Vernon
Area
 • Total
530 sq mi (1,400 km2)
 • Land525 sq mi (1,360 km2)
 • Water4.1 sq mi (11 km2)  0.8%
Population
 (2020)
 • Total
62,721
 • Estimate 
(2023)
63,320 Increase
 • Density120/sq mi (46/km2)
Time zoneUTC−5 (Eastern)
 • Summer (DST)UTC−4 (EDT)
Congressional district12th
Websitewww.co.knox.oh.us

Knox County is a county located in the U.S. state of Ohio. As of the 2020 census, the population was 62,721.[2] Its county seat is Mount Vernon.[3] The county is named for Henry Knox, an officer in the American Revolutionary War who was later the first Secretary of War.[4] Knox County comprises the Mount Vernon, OH Micropolitan Statistical Area, which is also included in the Columbus-Marion-Zanesville, OH Combined Statistical Area.

  1. ^ "Ohio County Profiles: Knox County" (PDF). Ohio Department of Development. Archived from the original (PDF) on June 21, 2007. Retrieved April 28, 2007.
  2. ^ 2020 census
  3. ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
  4. ^ Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Government Printing Office. pp. 177.