Erastus is an unincorporated community in Mercer County, in the U.S. state of Ohio. [1]
A post office was established at Erastus in 1883, and remained in operation until it was discontinued in 1904. [2] By 1907, Erastus had no businesses remaining. [3]
40°30′32″N 84°42′28″W / 40.50889°N 84.70778°W