Maplewood. 1 Village (1990 pop. 30,954), Ramsey co., SE Minn., a growing residential suburb of St. Paul; inc. 1957. 2 City (1990 pop. 9,962), St. Louis co., E Mo., a suburb of St. Louis; settled 1825, inc. 1908. Manufactures include structural steel products, honing tools, and aluminum storm sashes. 3 Township (1990 pop. 21,756), Essex co., NE N.J., W of Newark. It is a primarily residential area.