Ohio's 10th senatorial district

Ohio's 10th
State Senate district
Ohio's 10th; State Senate district
Senator
	Kyle Koehler; R–Springfield
Demographics	82% White; 9.3% Black; 3.3% Hispanic; 2.8% Asian; 2.3% Native American; 0.2% Hawaiian/Pacific Islander
Population (2020); • Voting age; • Citizens of voting age	345,985; 270,968; 265,225

Ohio's 10th senatorial district has been based in south-central Ohio. It comprises the counties of Clark, Greene and Madison. It encompasses Ohio House districts 73, 74 and 79. It has a Cook PVI of R+15. Its current Ohio Senator is Republican Bob Hackett. He resides in Madison County.

List of senators

Senator	Party	Term	Notes
Max Dennis	Republican	January 8, 1963 – December 31, 1976	Dennis did not seek re-election in 1976.
John Mahoney	Democrat	January 3, 1977 – December 31, 1980	Mahoney lost re-election in 1980 to Mike DeWine.
Mike DeWine	Republican	January 3, 1981 – December 13, 1982	DeWine won election to the United States Congress in 1982.
Dave Hobson	Republican	December 13, 1982 – January 3, 1991	Hobson won election to the United States Congress in 1990.
Merle G. Kearns	Republican	January 3, 1991 – December 31, 2000	Kearns was term-limited in 2000.
Steve Austria	Republican	January 3, 2001 – December 31, 2008	Austria was term-limited in 2008.
Chris Widener	Republican	January 6, 2009 – January 21, 2016	Widener resigned to work in the private sector.
Bob Hackett	Republican	February 23, 2016 – December 31, 2024	Hackett was term-limited in 2024
Kyle Koehler	Republican	January 1, 2025 – present	Incumbent