Wanamassa /wɑːnɑːmæsə/ is an unincorporated community and census-designated place (CDP) within Ocean Township, in Monmouth County, New Jersey, United States.

[3] The community was named for Wanamassa, a Native American leader of the 17th century.

The community is in eastern Monmouth County, in southeastern Ocean Township.

It is bordered to the east by the borough of Interlaken and to the southeast by the city of Asbury Park.

The 2010 United States census counted 4,532 people, 1,648 households, and 1,229 families in the CDP.

Of all households, 19.6% were made up of individuals and 7.7% had someone living alone who was 65 years of age or older.

[13] As of the 2000 United States Census[6] there were 4,551 people, 1,657 households, and 1,277 families living in the CDP.