Kerr is an unincorporated community in southeastern Springfield Township, Gallia County, Ohio, United States. Although it is unincorporated, it has a post office, with the ZIP code of 45643.
Kerr is part of the Point Pleasant, WV-OH Micropolitan Statistical Area. Public education in the community of Kerr is provided by the Gallia County Local School District.
Coordinates: 38°52′30″N 82°15′40″W / 38.875°N 82.26111°W