Turtlecreek Township is one of the eleven
townships of
Warren County,
Ohio,
United States. It is in the central part of the county and surrounds the county seat of
Lebanon. Turtlecreek is the largest township in the county, originally containing sixty-three whole and seven fractional sections. It had a population of 12,617 in
2000, up from 10,383 in
1990. Of those, 12,114 lived in the unincorporated part of the township, 456 in
Middletown, and 47 in
Monroe.