Watertown is a town in Litchfield County, Connecticut, United States.

The urban center of the town is the Watertown census-designated place, with a population of 3,938 at the 2020 census.

[4] Colonization of the area today called Watertown began in 1684 when Thomas Judd and other proprietors bought the land as a group.

[3] The land where Watertown is now located, having originally belonged to Mattatock, officially changed its name to Watterbury (now Waterbury) by record on March 20, 1695, by consensus of a council.

[3] The Town of Watertown was officially established in 1780 when Westbury separated from Watterbury.

Other bordering towns are Middlebury to the south, Woodbury and Bethlehem to the west, Morris to the northwest, and Thomaston to the east.

[6] Oakville, which is often mistaken for a separate town, is in the southeastern part of Watertown.

Although Oakville has its own post office and ZIP code, it does not have a charter or town government of its own.

Oakville receives all of its town services (police, fire, water and so on) from Watertown.

The school provides boarding and day education for grades 9-12 and has been nestled in Watertown since 1908.