Annapolis, OhioAnnapolis is an unincorporated community in Salem Township, Jefferson County, in the U.S. state of Ohio.HistoryAnnapolis was originally called New Salem, and under the latter name was platted in 1802. A post office called New Salem was established in 1815, the name was changed to Annapolis in 1823, and the post office closed in 1914. Besides the post office, Annapolis had a country store.