Sardis, also known as Berlin, is an unincorporated community in Dallas County, Alabama.HistoryA post office called Sardis was established in 1856. The community was named after the biblical city of Sardis.Sardis has one site included on the National Register of Historic Places, the J. Bruce Hain House.Notable peopleBill Hefner, U.S. Representative from 1975 to 1999Clara Weaver Parrish, artist