Jerseyville is an unincorporated community located within Howell Township in Monmouth County, in the U.S. state of New Jersey. It is primarily a rural area within the northern part of the township, near Colts Neck and Freehold. Route 33 Business travels through Jerseyville, with some development, including a gas station, a convenience store, a church, and several residences.
Originally known as Green Grove, the area's name was changed by residents to Jerseyville in 1854.