|— Town —|
|Region||Central Naugatuck Valley|
|• Town manager||Charles Frigon|
|• Town council||Raymond F. Primini, Chm.(R)
Mary Ann Rosa, Vice Chm. (R)
Gary L. Bernier
David J. Demirs (D)
Richard DiFederico (R)
Richard Fusco (R)
Joe Polletta (D)
Lou Razza (D)
K. Duplisse (R)
|• Board of Education Commissioners||Guy Buzzanco, Chm. (R)
Tom Lambert, Vice Chm. (R)
Eric Berthel, Sec. (R)
Raymond J. Nardella (R)
Richard Beland (R)
Mary Coloangelo (R)
David J. Guererra (D)
Atty Sean Butterly (D)
Sue McCabe (I)
|• Total||29.6 sq mi (76.7 km2)|
|• Land||29.2 sq mi (75.5 km2)|
|• Water||0.4 sq mi (1.1 km2)|
|Elevation||620 ft (189 m)|
|• Density||765/sq mi (295/km2)|
|Time zone||Eastern (UTC-5)|
|• Summer (DST)||Eastern (UTC-4)|
|ZIP code||06779, 06795|
|GNIS feature ID||0213527|
Watertown is a town in Litchfield County, Connecticut, United States. The population was 21,661 at the 2000 census. The zip code for Watertown is 06795. It is a suburb of Waterbury. It borders the towns of Woodbury, Middlebury, Litchfield, Plymouth, Bethlehem, and Thomaston.
More than 310 years ago the area that is now Watertown belonged to the local Paugasuck Indians. But in 1684, Thomas Judd and 35 other proprietors bought the land from the Indians and town history began.
It is in the Eastern Standard time zone. Elevation is 620 feet.
According to the United States Census Bureau, the town has a total area of 29.6 square miles (76.6 km²), of which, 29.1 square miles (75.5 km²) of it is land and 0.4 square miles (1.1 km²) of it (1.45%) is water. Watertown also includes the section known as Oakville, which is often mistaken for a separate town. Although Oakville has its own post office and ZIP code, it does not have a charter or town government of its own.
As of the census of 2000, there were 21,661 people, 8,046 households, and 5,994 families residing in the town. The population density was 743.0 people per square mile (286.9/km²). There were 8,298 housing units at an average density of 284.6 per square mile (109.9/km²). The racial makeup of the town was 96.46% White, 0.75% African American, 0.12% Native American, 1.27% Asian, 0.05% Pacific Islander, 0.48% from other races, and 0.87% from two or more races. Hispanic or Latino of any race were 1.87% of the population.
There were 8,046 households out of which 34.7% had children under the age of 18 living with them, 61.7% were married couples living together, 9.4% had a female householder with no husband present, and 25.5% were non-families. 21.7% of all households were made up of individuals and 9.4% had someone living alone who was 65 years of age or older. The average household size was 2.67 and the average family size was 3.13.
In the town the population was spread out with 24.8% under the age of 18, 6.3% from 18 to 24, 29.9% from 25 to 44, 24.9% from 45 to 64, and 14.1% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 92.0 males. For every 100 females age 18 and over, there were 90.6 males.
The median income for a household in the town was $59,420, and the median income for a family was $68,761. Males had a median income of $47,097 versus $31,822 for females. The per capita income for the town was $26,044. About 1.1% of families and 2.2% of the population were below the poverty line, including 0.8% of those under age 18 and 3.7% of those age 65 or over.
The Route 8 expressway runs through the eastern edge of town, with two exits inside the town. The main routes through the town center are Route 6 running east-west and Route 63 running north-south. Other important highways include Route 73 (a more direct route to Waterbury), and Route 262. Public transportation is provided by buses of Northeast Transportation Company.
Local media 
- Waterbury Republican-American - A Waterbury-based independent daily newspaper.
- Town Times, Prime Publishers Inc. - A local newspaper serving Watertown, Oakville, Bunker Hill in Waterbury, Thomaston and Northfield. Voices, its sister paper, covers Southbury, Middlebury, Oxford, Seymour, Naugatuck, Woodbury, Bethelhem, New Preston, Washington, Washington Depot, Roxbury, Bridgewater, Monroe, Sandy Hook and Newtown.
- Macaroni Kid - An online magazine for families in Watertown.
Notable places 
- The Taft School, a private boarding school
- Mt. Olivet Cemetery
- Watertown Historical Society
- The Old Burying Ground, a historical cemetery located on the corner of Main Street and French Street. The first body buried there was Hannah Richards Scovill in 1741. The last body was Martha Beardsly in 1938. It is unknown exactly how many bodies are interred in the Old Burial Grounds. Record keeping was not precise, particularly in the early days. We do know that many graves went unmarked and eventually gravediggers complained that no matter where they dug, they hit previously buried coffins.The exact number of people buried here will never be known.
- Crestbrook Park Golf Course, public golf course
Notable people 
- Edward Fitzsimmons Dunne, (1853–1937) 31 mayor of Chicago (1905–1907); governor of Illinois (1913–1917) was born in Watertown.
- Leatherman, (1839-1889) Drifter within the CT and Hudson River Valley areas, known for his leather clothing.
- Benjamin B. Hotchkiss (1826–1885), for whom The Hotchkiss School was named by his widow, was one of the leading American ordnance engineers of his day. He made his money by founding a successful munitions company in France after the American Civil War. He was born in Watertown but in early childhood moved to Sharon.
- John Trumbull (1750–1831), American political satirist and poet, was born in Watertown.
- Allen B. Wilson and Nathaniel Wheeler started their Wheeler & Wilson Manufacturing Company here. It was one of the first manufacturers of sewing machines
- Joe Cipriano Television Announcer CBS, Fox, Radio Personality WWCO, WRQX, and KIIS FM
- Rico Brogna, MLB 1st baseman who played for the Detroit Tigers, New York Mets, Philadelphia Phillies, Boston Red Sox, and Atlanta Braves from 1992–2001