Westbrook [Middlesex County] was a parish named in 1810 as a west parish of Saybrook. It was incorporated in 1840. Its Native American name is "Pochaug". Area, 21.4 sq. miles. Population, est., 5,617. Voting Districts, 1. Principal industries, fishing, woodworking, electronics, aircraft and missile parts, concrete blocks, auto sales, boat rentals and sales, marinas, summer resorts and Westbrook factory stores.