Brookside (once called Waterstreet) is a historic unincorporated community and census-designated place (CDP) located within Mendham Township in Morris County, in the U.S. state of New Jersey. It is located approximately 6 mi (9.7 km) west of Morristown. It is close to the Washington Valley Historic District in neighboring Morris Township.
Zip Codes in Brookside, NJ that we also serve: 07960 07926 07945