Atlantic Highlands is a borough in Monmouth County, New Jersey, in the Bayshore Region. As of the 2010 United States Census, the borough's population was 4,385, a decline of 320 (−6.8%) from the 4,705 in the 2000 Census, which had in turn increased by 76 (+1.6%) from the 4,629 in the 1990 Census.
Atlantic Highlands contains Mount Mitchill, the highest point on the eastern seaboard south of Maine, rising 266 feet (81 m) above sea level. The borough's name comes from its location overlooking the Atlantic Ocean.
Atlantic Highlands was incorporated as a borough by an act of the New Jersey Legislature on February 28, 1887, from portions of Middletown Township, based on the results of a referendum held that day. The borough was reincorporated on September 1, 1891.
Atlantic Highlands is part of the Bayshore Regional Strategic Plan, an effort by nine municipalities in northern Monmouth County to reinvigorate the area's economy by emphasizing the traditional downtowns, dense residential neighborhoods, maritime history, and the natural beauty of the Raritan Bayshore coastline.
The town overlooks where the Atlantic Ocean and Raritan Bay meet at Sandy Hook, and its hills mark the highest point on the eastern seaboard of the U.S. south of Maine.
For hundreds of years, the original inhabitants were the Lenape, who lived in and along the cliffs and creeks of Atlantic Highlands. The Lenape traded with the Europeans and sold a group of English settlers an area that covered the entire peninsula that was named Portland Poynt. The area was laid out with 10 lots in 1667, making them the first European residents of present-day Atlantic Highlands.
Colonists convened the first Assembly of New Jersey in 1667 in what is now Atlantic Highlands. During Revolutionary War years, loyalists to the British crown and patriots of the new America clashed in repeated raids and counterattacks across these lands. Retreating English troops passed through after their defeat in 1778 by George Washington at the Battle of Monmouth.