Manalapan Township is a township in Monmouth County, New Jersey, United States. As of the 2010 United States Census, the township's population was 38,872, representing an increase of 5,449 (+16.3%) from the 33,423 counted in the 2000 Census, which had in turn increased by 6,707 (+25.1%) from the 26,716 counted in the 1990 Census. The name "Manalapan" is derived from a word in the Lenape language that would mean either "land of good bread" or "good land to settle upon."
Manalapan Township was formed by an act of the New Jersey Legislature on March 9, 1848, from portions of Freehold Township. Englishtown was formed as a borough from portions of Manalapan on January 4, 1888, based on the results of a referendum held the previous day.