Colebrook is a town in Litchfield County, Connecticut, United States. The population was 1,361 at the 2020 census. Colebrook was named after Colebrooke in the English county of Devon; the reason is now unknown. Geography Colebrook is in northeastern Litchfield County and is bounded to the east by Hartford County, Connecticut, and to the north by Berkshire and Hampden County in Massachusetts. According to the United States Census Bureau, the town has a total area of , of which are land and , or 4.23%, are water. Colebrook River Lake and West Branch Reservoir, both on the West Branch of the Farmington River, are in the northeast part of the town. Algonquin State Forest is in the central part of the town. Colebrook is north of Torrington and northwest of Hartford, the state capitol. Principal communities Colebrook center North Colebrook Robertsville Demographics As of the census of 2000, there were 1,471 people, 566 households, and 419 families residing in the town. The population density was . There were 656 housing units at an average density of 20.8 per square mile (8.0/km2). The racial makeup of the town was 97.01% White, 0.68% African American, 0.61% Asian, 0.88% from other races, and 0.82% from two or more races. Hispanic or Latino of any race were 2.45% of the population. There were 566 households, out of which 32.2% had children under the age of 18 living with them, 65.2% were married couples living together, 5.1% had a female householder with no husband present, and 25.8% were non-families. 19.6% of all households were made up of individuals, and 7.1% had someone living alone who was 65 years of age or older. The average household size was 2.60 and the average family size was 3.01. In the town, the population was spread out, with 24.5% under the age of 18, 4.2% from 18 to 24, 29.6% from 25 to 44, 27.5% from 45 to 64, and 14.1% who were 65 years of age or older. The median age was 41 years. For every 100 females, there were 102.1 males. For every 100 females age 18 and over, there were 101.5 males. The median income for a household in the town was $58,684, and the median income for a family was $64,286. Males had a median income of $42,647 versus $35,987 for females. The per capita income for the town was $29,789. About 1.4% of families