Allenhurst is a borough in Monmouth County, New Jersey, United States named for resident Abner Allen and incorporated as a borough by an act of the New Jersey Legislature on April 26, 1897, from portions of Ocean Township. As of the 2010 United States Census, the borough's population was 496, reflecting a decline of 222 (-30.9%) from the 718 counted in the 2000 Census, which had in turn declined by 41 (-5.4%) from the 759 counted in the 1990 Census.
Bordered by the Atlantic Ocean to the east and Deal Lake to the west, it is in close proximity to New York City and is a stop on the NJ Transit North Jersey Coast Line. The borough is at the center of a string of wealthy communities between Long Branch and Asbury Park with many historic homes built during the late 19th and early 20th centuries. In 2006, Allenhurst ranked 131st in Forbes magazine's list of the most expensive ZIP Codes in the United States.
Allenhurst "reflects the history of development from a rural area to a suburb and resort town of New York City. In 1895, the 120-acre (49 ha) Allen farm was bought by the Coast Land Improvement Company in order to build an exclusive resort community to attract upper class summer residents. The proximity of Allenhurst to the rail line was significant in the growth and popularity of Allenhurst, allowing residents of New York City easier access to the community."
On April 26, 1897, Allenhurst was incorporated as a borough by an act of the New Jersey Legislature from portions of Ocean Township. The borough is situated in the center of a string of wealthy communities between Long Branch and Asbury Park. The borough was named for resident Abner Allen.
During the late 19th and early 20th centuries many historic homes were built in Victorian, Queen Anne, Italian Renaissance Revival, Tudor Revival, Prairie, Mission Revival, American Craftsman, Shingle, Colonial Revival, Neoclassical and Gothic Revival architectural styles. Local ordinances overseen by an historic preservation commission have ensured the preservation of historical architecture by enforcing strict guidelines for the renovation of older homes.
In 2006, Allenhurst ranked 131st in Forbes magazine's list of the most expensive ZIP Codes in the United States.