Area, 50.0 sq. miles. Population, est., 16,057. Voting districts, 6. Principal industries, molded rubber products, plastic products, surgical supplies, mattresses, fiber optics, cosmetics, distribution centers, windows, molded circuits, transformer board, poron, electrical insulation, computer bus bars, knives, snack foods.

Killingly encompasses the villages of Attawaugan, Ballouville, Dayville, East Killingly, Rogers, South Killingly and the Borough of Danielson.