West Keansburg is an unincorporated community located within Hazlet Township in Monmouth County, New Jersey, United States. Its total land area is estimated at 1.667 square miles (4.32 km2) and it includes portions of the township east of Waackaack Creek and some parts north of Route 36, as well as some other parts in northeast Hazlet. As of the 2000 United States Census, West Keansburg had a population of 14,423, which is over half of Hazlet's total population of 21,165.