Mantoloking is a borough in Ocean County, New Jersey, United States. As of the 2010 United States Census, the borough had a total population of 296, reflecting a decline of 127 (-30.0%) from the 423 counted in the 2000 Census, which had in turn increased by 89 (+26.6%) from the 334 counted in the 1990 Census. The borough has an estimated summer population of approximately 5,000.
As of the 2000 Census, Mantoloking was the wealthiest community in the state of New Jersey with a per capita money income of $114,017 as of 1999, an increase of 29.8% from the $87,830 recorded in 1989. It was ranked as the 15th highest-income place in the United States. In the Forbes magazine 2012 rankings of "America's Most Expensive ZIP Codes", the borough was ranked 139th, with a median price of $1,403,349.
Mantoloking was incorporated as a borough by an Act of the New Jersey Legislature on April 10, 1911, from portions of Brick Township. The name Mantoloking is derived from the Unami language of the Lenni Lenape Native Americans who once inhabited New Jersey. Various meanings have been attributed to the community's name including "frog ground" or "sand place".
The borough is a Jersey Shore community situated on the Barnegat Peninsula, also known as Barnegat Bay Island, a long, narrow barrier island that separates Barnegat Bay from the Atlantic Ocean. The town is linked to the New Jersey-mainland via the Mantoloking Bridge, linking the town with Brick Township across the Barnegat Bay. Mantoloking is home to the Olympic-champion producing Mantoloking Yacht Club. Many houses in Mantoloking are of Shingle style architecture and seashore colonial designs with cedar shakes and white trim; popular in places like Cape Cod, Nantucket, Martha's Vineyard and Newport. Some old "summer cottages" in town were designed by world-renowned architect Stanford White of McKim, Mead and White fame. Together with Bay Head to the north, Mantoloking is considered part of the Jersey Shore's "Gold Coast". It is a dry town where alcohol cannot be sold.
During Hurricane Sandy in 2012, storm surge damaged about 90% of the properties in Mantoloking with the largest damage occurring when a breach was formed between the Barnegat Bay and the Atlantic Ocean in the vicinity of Herbert Street (CR 528).