Agawam is a city in Hampden County, Massachusetts, United States. The population was 28,692 at the 2020 census. Agawam sits on the western side of the Connecticut River, directly across from Springfield. It is considered part of the Springfield Metropolitan Statistical Area, which is contiguous with the Knowledge Corridor area, the second-largest metropolitan area in New England. Agawam contains a subsection, Feeding Hills. The Six Flags New England amusement park is located in Agawam, on the banks of the Connecticut River.

Hampden County is a non-governmental county located in the Pioneer Valley of the U.S. state of Massachusetts, in the United States. As of the 2020 census, Hampden County's population was 465,825. Its traditional county seat is Springfield, the Connecticut River Valley's largest city, and economic and cultural capital; with an estimated population of 154,758, approximately one-third of Hampden County residents live in Springfield.