Union is a town in Broome County, New York, United States. As of the 2010 census, the town had a total population of 56,346. The name derives from the town having served as a rendezvous for the Sullivan Expedition.

Binghamton is a city in the U.S. state of New York, and serves as the county seat of Broome County. Surrounded by rolling hills, it lies in the state's Southern Tier region near the Pennsylvania border, in a bowl-shaped valley at the confluence of the Susquehanna and Chenango Rivers. Binghamton is the principal city and cultural center of the Binghamton metropolitan area, home to a quarter million people. The city's population, according to the 2020 census, is 47,969.