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is a town in New London County, Connecticut, United States. The population was 10,807 at the 2000 census. Griswold contains one borough, Jewett City, and also contains the villages of Doaneville, Glasgo, Hopeville, and Pachaug.
According to the United States Census Bureau, the town has a total area of 37.1 square miles (96.1 km²), of which, 35.0 square miles (90.5 km²) of it is land and 2.2 square miles (5.6 km²) of it (5.82%) is water.