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About Us

The Township of Green Brook is the Emerald City in the crown jewel of Somerset County.  The Township is a full-service community with excellent schools, a wide variety of housing stock and is "Small Enough to Know You, Large Enough to Get Things Done."  Green Brook currently has a population of about 7,200 residents in a 4.6 square mile radius.

  • Green Brook Township took its name from the powerful stream that flows from up in the mountains several miles away, feeding from many smaller brooks and ponds along the way, in a southwesterly direction for a distance of fifteen miles, into the Bound Brook then into the Raritan River.
  • Also contained within the boundaries of our community is Washington Rock State Park, which commemorates the spot where George Washington and Marquis De Lafayette watched the movement of the British soldiers during the Revolutionary war, mainly the months of May and June 1777. Washington Rock State Park was commissioned on March 17, 1913 and is about 34 acres in size.
  • Green Brook Township was formed out of a part of North Plainfield Township in 1932. Settlement here was about one hundred years prior to the Revolution on the Passaic River and down in the Valley, which was to become known as Washington’s Valley.