Pawcatuck is a village in the town of Stonington which is located in New London County on the coast bordering Rhode Island. The population was 5,624 at the 2010 census. It is located across the Pawcatuck River from Westerly Rhode Island.
The Mechanic Street Historic District is on the National Register of Historic Places includes sites of shipbuilding, mills, and worker housing in a 147-acre area.
Pawcatuck includes the neighborhoods listed below: