Killingworth, located in Middlesex County, has an area of 35.8 square miles according to the United States Census Bureau. Of this total, 35.3 square miles is dry land and 0.5 square miles, or 1.34%, is water-covered. According to the 2020 U.S. Census, the town’s population was 6,174. Killingworth was the subject of the poet Henry Wadsworth Longfellow‘s famous poem “The Birds of Killingworth”.

The Town of Killingworth has a Selectmen-Town Meeting form of government. The First Selectman is the chief elected official and chairman of a three-member Board of Selectman, who collectively serve as the executive branch. The Town Meeting is the legislative body; it is composed of all residents who are registered voters or who own property assessed at $1,000 or more. Numerous specialized boards and commissions of elected or appointed residents have responsibility for specific functions of town governance.

The Town of Killingworth is a chartered municipality and enjoys home rule authority as provided by the Connecticut General Statutes.

For a history of the town, please visit the Killingworth Historical Society.

ADA NOTICE: The Town of Killingworth does not discriminate on the basis of disability in admission to, access to, or operation of its programs, services, or activities or in its hiring or employment practices.

This notice is provided as required by Title II of the Americans with Disabilities Act of 1990.

Questions, concerns, complaints, or requests for additional information regarding the ADA may be forwarded to, ADA Coordinator, Town of Killingworth, 323 Route 81, Killingworth, CT 06419; (860) 663-1765 X 203. Individuals who need auxiliary aids for effective communication in programs and services of the Town of Killingworth are invited to make their needs and preferences known to the ADA Coordinator.

Notice regarding Sexual Harassment

Public Act 17-2 requires the contracts of all Board of Education administrative personnel to be published on each town’s website.





View Town of Killingworth in a larger map