Union Station is a railway station located at Washington Square in downtown Worcester, Massachusetts. It is the western terminus of the MBTA Commuter Rail Framingham/Worcester Line and a stop for the Amtrak Lake Shore Limited service. A bus terminal adjacent to the station is the hub for Worcester Regional Transit Authority (WRTA) local bus service; it is also used by PVTA, MART, Peter Pan, and Greyhound intercity buses.

Worcester is the 2nd most populous city in the U.S. state of Massachusetts and the 114th most populous city in the United States. Named after Worcester, England, the city's population was 206,518 at the 2020 census, also making it the second-most populous city in New England after Boston. Worcester is approximately 40 miles (64 km) west of Boston, 50 miles (80 km) east of Springfield and 40 miles (64 km) north-northwest of Providence. Due to its location near the geographic center of Massachusetts, Worcester is known as the "Heart of the Commonwealth"; a heart is the official symbol of the city. Worcester is the historical seat of Worcester County in central Massachusetts.