Green Brook

#8 in Best Places to Raise a Family in Somerset County

Green Brook is a township in Somerset County centrally located within the Raritan Valley region.
What is now Green Brook was originally created as North Plainfield Township on April 2, 1872, from portions of Warren Township. Portions of the township were taken to form North Plainfield borough (June 9, 1885) and Watchung (March 23, 1926). Green Brook was incorporated as a township by an act of the New Jersey Legislature on November 8, 1932, replacing North Plainfield Township, based on the results of a referendum held that same day. Most of Green Brook shares it’s ZIP Code 08812 with Dunellen. The township describes itself as “Small Enough to Know You, Large Enough to Get Things Done”. 

The township is in the Raritan Valley, a line of places in central New Jersey. Green Brook lies in the northern division of Raritan Valley along with the borough of North Plainfield. Unincorporated communities, localities and place names located partially or completely within the township include Seeley Mills and Washington Rock. The township borders the municipalities of Bridgewater Township, North Plainfield, Warren Township and Watchung in Somerset County; Middlesex Borough and Dunellen in Middlesex County and Plainfield in Union County.

As of the 2010 United States Census, the township’s population was 7,203, reflecting an increase of 1,549 (+27.4%) from the 5,654 counted in the 2000 Census, which had in turn increased by 1,194 (+26.8%) from the 4,460 counted in the 1990 Census.