Willingboro Township is a township in Burlington County, New Jersey, United States. As of the 2010 United States Census, the township's population was 31,629 reflecting a decline of 1,379 from the 33,008 counted in the 2000 Census, which had in turn declined by 3,283 from the 36,291 counted in the 1990 Census.Abraham Levitt and Sons purchased and developed Willingboro land in the 1950s and 1960s as a planned community in their Levittown model. With residential development, the 1950 population of 852 rapidly climbed to 11,861 in 1960; and 43,386 in 1970. The community used the name "Levittown, New Jersey" in 1958, and "Levittown Township" from 1959 to 1963.