Fosters (sometimes given as Foster) is an unincorporated community in southern Warren County, Ohio straddling the Little Miami River in Deerfield and Hamilton Townships. It is located about two miles southwest of Hopkinsville, two miles west of Maineville, and two miles northeast of Twenty Mile Stand just off the 3C Highway. (In the 1960s, the State of Ohio erected a new high bridge over the river that bypassed the community.) The community is in the Kings Local School District and is served by the Maineville post office. It is in the Little Miami telephone exchange. Governor Jeremiah Morrow once lived here.