Maplewood is an unincorporated community in northern Salem Township, Shelby County, Ohio, United States. Although it is unincorporated, it has a post office, with the ZIP code of 45340. It lies along State Route 65.
A post office called Maplewood has been in operation since 1880. Growth remained static until the railroad was extended to the site in 1892.
Coordinates: 40°22′34″N 84°01′33″W / 40.37611°N 84.02583°W