Belmont is a former village and unincorporated community in Lisle Township, DuPage County, Illinois, United States. It was first settled in 1835. It was incorporated as a village in 1980 and disincorporated in 2004, after which portions of the area were annexed into nearby Downers Grove. It is typically defined as the area west of Denburn Woods and east of I-355, in between Downers Grove and Woodridge. The Belmont Train Station is in the town. St. Joseph Creek, a tributary of the DuPage River, runs through the town.