Robbinsville is a census-designated place (CDP) located within Robbinsville Township (known as Washington Township until 2007) in Mercer County, New Jersey, United States. The area is served as United States Postal Service ZIP Code 08691. As of the 2010 United States Census, the population for the CDP was 3,041. The CDP includes the area of the township developed as a part of the Robbinsville Town Center. The CDP also includes the largely undeveloped land bordered by the Hamilton Township border, U.S. Route 130, and New Jersey Route 33 though there are some plans to develop this area as well. From Wikipedia
