Maplewood is an unincorporated community in northern Salem Township, Shelby County, Ohio, United States. It has a post office with the ZIP code 45340.[1] It lies along State Route 65.
A post office called Maplewood has been in operation since 1880.[2] Growth remained static until the railroad was extended to the site in 1892.[3] The Detroit, Toledo and Ironton Railroad (now Genesee and Wyoming-owned Indiana and Ohio Railway) continues to run through this community.