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Keansburg is a borough in Monmouth County, New Jersey, occupying the south shore of Raritan Bay in the Bayshore region, an area of waterfront communities that face Staten Island and the mouth of New York Harbor. With a population of about 9,800, Keansburg is a compact, close-knit borough whose identity has long been tied to the bay and to its role as a family-oriented shore resort. The area was first settled as the hamlet of Waackaack, and the community took its modern name in 1884, when a post office opened and residents honored John Kean, the U.S. senator and congressman who had helped secure it. The Borough of Keansburg was formally incorporated in 1917 from portions of Middletown and Raritan townships. The borough's defining institution is the Keansburg Amusement Park, which dates to 1904, when William Gelhaus purchased marshland on the bayfront to create a summer resort. The park has operated for more than a century, and its boardwalk, rides, arcades, and the adjacent Runaway Rapids waterpark remain the heartbeat of local summers and a draw for visitors across the region. Keansburg has a distinctly working-class, bayside character. Its streets hold a mix of older cottages and modest single-family homes, and the population includes many long-time residents and families. The borough offers bay beaches, a marina, and easy access to the bay's fishing and boating, while commuters reach New York City via nearby New Jersey Transit rail stations, bus lines, and the New York Waterway ferry at Belford. For those seeking an authentic Bayshore community with waterfront access and a classic Jersey shore atmosphere, Keansburg stands apart.

Population 9,755

County Monmouth County

Active Listings 148

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Frequently Asked Questions

What county is Keansburg, New Jersey in?

Keansburg is in Monmouth County, New Jersey, on the south shore of Raritan Bay in the Bayshore region, facing Staten Island and the lower New York Harbor across the water. It lies along State Route 36, a short distance from Middletown and Hazlet.

What is Keansburg known for?

Keansburg is known as a bayside shore town and for the Keansburg Amusement Park, which opened in 1904, along with the adjoining Runaway Rapids waterpark. The borough has bay beaches and a marina on Raritan Bay.

Who is Keansburg named after?

Keansburg is named for John Kean, a U.S. senator and congressman from New Jersey who helped the community secure its first post office in 1884. The name was adopted that year, and the borough incorporated in 1917.

What school district serves Keansburg?

Keansburg is served by the Keansburg School District, which operates four schools for students in pre-kindergarten through twelfth grade, enrolling roughly 1,600 students. The district is a former Abbott district with a long history of state support.

How do Keansburg residents commute to New York City?

Keansburg residents reach New York City by bus, by New Jersey Transit rail from nearby Middletown or Hazlet stations, or by the New York Waterway ferry from Belford. Driving uses State Route 36 and the Garden State Parkway.

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