Chicopee ( CHIK-ə-pee) is a city located on the Connecticut River in Hampden County, Massachusetts, United States. At the 2020 census, the city had a population of 55,560, making it the second-largest city in western Massachusetts after Springfield. Chicopee is part of the Springfield, Massachusetts Metropolitan Statistical Area. The communities of Chicopee Center (Cabotville), Chicopee Falls, Willimansett, Fairview, Aldenville, Burnett Road, Smith Highlands and Westover are located within the city. One of the ventures of the Boston Associates, Chicopee is a city built around several smaller former mill communities on its namesake, the Chicopee River.