Plymouth county. Hanover is bounded S. by North river, which furnishes good mill sites. It was incorporated in 1727. It lies 23 miles S.E. from Boston and 12 N.W. from Plymouth. The manufactures of Hanover consist of bar iron, iron casings, anchors, ploughs, vessels, tacks, leather, boots, shoes, and woolen cloth: total annual amount, about $75,000. Pop. 1837, 1,435.