Chicopee (chĭkˈəpē) [key], city (1990 pop. 56,632), Hampden co., SW Mass., at the confluence of the Chicopee and the Connecticut rivers; settled c.1641, set off from Springfield 1848, inc. as a city 1890. It includes the villages of Willimansett, Fairview, Aldenville, Chicopee Center, and Chicopee Falls. Plastics, textiles, sporting goods, and machinery are among the city's manufactures. The College of Our Lady of the Elms is there. The author Edward Bellamy was born and lived in Chicopee Falls. Westover Air Base is nearby.