Sprague is a town in New London County, Connecticut, United States. The town was named after William Sprague, who laid out the industrial section. The population was 2,984 at the 2010 census. Sprague is composed of three villages: Baltic, Hanover, and Versailles.

According to the United States Census Bureau, the town has a total area of 13.8 square miles (35.8 km²), of which 13.2 square miles (34.2 km²) is land and 0.6 square miles (1.6 km²), or 4.41%, is water.

The town hall is located in Baltic and was constructed in the 1950s.

As of the census of 2000, there were 2,971 people, 1,111 households, and 797 families residing in the town. The population density was 224.8 people per square mile (86.8/km²). There were 1,164 housing units at an average density of 88.1 per square mile (34.0/km²). The racial makeup of the town was 95.42% White, 0.71% African American, 0.64% Native American, 1.35% Asian, 0.07% Pacific Islander, 0.37% from other races, and 1.45% from two or more races. Hispanic or Latino of any race were 1.11% of the population.

There were 1,111 households out of which 36.5% had children under the age of 18 living with them, 54.2% were married couples living together, 12.2% had a female householder with no husband present, and 28.2% were non-families. 21.2% of all households were made up of individuals and 8.8% had someone living alone who was 65 years of age or older. The average household size was 2.63 and the average family size was 3.04.

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