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Peapack-Gladstone is a borough in the Somerset Hills region of northern Somerset County in the U.S. state of New Jersey. As of the 2020 United States census, the borough's population was 2,558, a decrease of 24 (−0.9%) from the 2010 census count of 2,582, which in turn reflected an increase of 149 (+6.1%) from the 2,433 counted in the 2000 census.
Source: Wikipedia