Although Acushnet doesn’t touch Buzzards Bay’s coastline directly, the entire town lies within the Buzzards Bay watershed.

The Acushnet River flows through the town, which connects Acushnet to New Bedford Harbor and Buzzards Bay. Acushnet is 19 square miles in size, surrounded by the communities of New Bedford, Fairhaven, Mattapoisett, Rochester, and Freetown. As of the 2010 Census, Acushnet was home to 10,303 residents.