CARLSTADT, a borough of Bergen county, New Jersey, U.S.A., 5m. north of Jersey city, on the Erie railroad. The population was in 1920 foreign-born white), and was in 193o by the Federal census. The numerous and varied manufactures include silk, wire gauges, dynamos, candles, wax, cigars, safety razors, buttons, embroidery, marble, chemicals and petroleum products. The borough was incorporated in