what county is brielle nj in?
Brielle, NJ. Brielle is located in east New Jersey. Brielle is part of Monmouth County. Brielle has 1.76 square miles of land area and 0.62 square miles of water area. As of 2010-2014, the total Brielle population is 4,772, which has shrunk 2.47% since 2000.