Williamstown, New Jersey is a census-designated place and unincorporated community located within Monroe Township, in Gloucester County, New Jersey, United States. As of the 2010 United States Census, the CDP's population was 15,567. At the 2010 United States Census, there were 15,567 people, 5,592 households, and 4,037 families residing in the CDP.
with surrounding areas in Sicklerville, Franklinville, Glassboro, Turnersville, and Sewell is home to Garaguso Karate, a Martial Arts facility focusing on
programs in Adult Martial Arts, Teen Martial Arts, Fitness Kickboxing, and Birthday Parties.