Butler County, Ohio

Butler County
Butler County Courthouse
Flag of Butler County
Official seal of Butler County
Map of Ohio highlighting Butler 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°26′N 84°35′W / 39.44°N 84.58°W / 39.44; -84.58
Country United States
State Ohio
FoundedMay 1, 1803[1]
Named forGeneral Richard Butler
SeatHamilton
Largest cityHamilton
Area
 • Total
470 sq mi (1,200 km2)
 • Land467 sq mi (1,210 km2)
 • Water3.1 sq mi (8 km2)  0.7%
Population
 (2020)
 • Total
390,357
 • Estimate 
(2023)
393,043 Increase
 • Density830/sq mi (320/km2)
Time zoneUTC−5 (Eastern)
 • Summer (DST)UTC−4 (EDT)
Congressional district8th
Websitebcohio.gov

Butler County is a county located in the southwestern part of the U.S. state of Ohio. As of the 2020 census, the population was 390,357.[2] Its county seat and largest city is Hamilton.[3] It is named for General Richard Butler, who died in 1791 during St. Clair's Defeat.[4] Located along the Great Miami River, it is also home to Miami University, a public university founded in 1809. Butler County is part of the Cincinnati, OH-KY-IN Metropolitan Statistical Area. The majority of the county is in District 52 of the State House.

  1. ^ "Ohio County Profiles: Butler County" (PDF). Ohio Department of Development. Archived from the original (PDF) on June 21, 2007. Retrieved April 28, 2007.
  2. ^ "State & County QuickFacts". United States Census Bureau. Retrieved July 6, 2022.
  3. ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
  4. ^ Rennick, Robert M. (August 28, 2013). Kentucky Place Names. University Press of Kentucky. pp. 103–. ISBN 9780813144016. Retrieved September 6, 2014.