Union is a town in Broome County, New York, United States.

The communities of Union form the western suburbs of Binghamton.

During the American Revolution, detachments of soldiers were sent through this region with the intent of attacking natives who were friendly to the British.

New York State Route 17 crosses from the north to the south side of the Susquehanna in Union.

NY-26 connects Union to the town of Vestal on the south side of the Susquehanna River.

New York State Route 17C is an east–west highway in the south part of Union.

34.5% of all households were made up of individuals, and 13.6% had someone living alone who was 65 years of age or older.