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is a Borough in Gloucester County, New Jersey, United States. As of the United States 2000 Census, the borough population was 19,068.
What is now Glassboro was originally formed as a township by an Act of the New Jersey Legislature on March 11, 1878, from portions of Clayton Township. Portions of the township were taken to form Elk Township (April 17, 1891) and Pitman (May 24, 1905). Glassboro was incorporated as a borough on March 18, 1920, replacing Glassboro Township.
Glassboro is home to Rowan University, formerly Glassboro State College. It was the site of the Glassboro Summit Conference that took place in 1967.
According to the United States Census Bureau, the borough has a total area of 9.2 square miles (23.9 km²), of which, 9.2 square miles (23.9 km²) of it is land and 0.11% is water.
Glassboro borders Elk Township, Clayton Borough, Monroe Township, Washington Township, Pitman Borough, Mantua Township, and Harrison Township.