Wiscasset is located at (44.005362, −69.670372) [REF].
According to the United States Census Bureau, the CDP has a total area of 3.9 square miles (10.2 km2), of which, 3.9 square miles (10.0 km2) of it is land and 0.04 square miles (0.1 km2) of it (0.77%) is water.