Contoocook is a census-designated place (CDP) within the town of Hopkinton in Merrimack County, New Hampshire, United States. The population was 1,444 at the 2000 census.

Contoocook is named after the Contoocook River that runs through it. In previous centuries the area was known as "Contoocookville". It is the birthplace of Civil War naval officer George H. Perkins. His daughter Isabel Weld Perkins and his son-in-law Larz Anderson maintained Perkins Manor as one of several summer homes.

In describing the approach to Perkins Manor one commentator writes:

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