Killingworth is a town in Middlesex County, Connecticut, United States. The population was 6,174 at the 2020 United States Census. History Killingworth was established from the area called Hammonasset, taken from the local Native American tribe of the same name. The area originally incorporated the area of the present town of Clinton, which was separated from Killingworth along ecclesiastical borders in 1838. Part of New London County prior to May 1785, Killingworth was then included in the newly formed Middlesex County, where it remains today. The New England town received its name from Kenilworth, England, the previous home of one of the first settlers in New England, Edward Griswold. Kenilworth's name resembled "Killingworth" during the colonial American period, though over time the pronunciations and spellings of the names drifted toward the two distinct modern ones. A town and village in England called Killingworth and Killingworth Village, in the county of Tyne and Wear, do not appear to have any connection with Killingworth, Connecticut. In the late 17th century, Killingworth became the birthplace of what would eventually become Yale University. The Rev. Abraham Pierson, the college's first president, taught some of the first classes in his Killingworth home—which is actually in present-day Clinton, Connecticut. However, in 1701, the college's first official home was constructed in Old Saybrook on the peninsula known as Saybrook Point donated by Yale's first Treasurer Nathanial Lynde. Eventually the school was moved to its present-day home in New Haven. Geography According to the United States Census Bureau, the town has an area of . Of this total, is dry land and – or 1.34% – is water-covered. Killingworth also contains Chatfield Hollow State Park. Government Killingworth is governed by a Board of Selectmen, currently headed by First Selectman, Republican Nancy Gorski, with Jamie Mowat Young and Louis Annino Jr also on the board. Demographics As of the census of July 1, 2015, there were 6,455 people, 2,513 households, and 1,765 families residing in the town. The population density was . There were 2,598 housing units at an average density of 70.6 per square mile (24.9/km2). The racial makeup of the town was 96.4% White, 0.7% African American, 0.2% Native American, 1.1% Asian, 0.1% Native Hawaiian and Other Pacific Islander, 2.2% Hispanic or Latino, and 1.3% Two or More Races. There were 2,513 households, with a 95.3% occupancy rate, out of which 23.9% had children under the age