Englishtown is a borough in Monmouth County, New Jersey, United States. As of the 2010 United States Census, the borough's population was 1,847, reflecting an increase of 83 from the 1,764 counted in the 2000 Census, which had in turn increased by 496 from the 1,268 counted in the 1990 Census.Englishtown was incorporated as a borough by an act of the New Jersey Legislature on January 4, 1888, from portions of Manalapan Township, based on the results of a referendum held the previous day. The borough was named for James English, an early settler.