Browns Lake is located at (42.687609, -88.237143) [REF].
According to the United States Census Bureau, the CDP has a total area of 2.8 square miles (7.2 km2), of which, 2.2 square miles (5.6 km2) of it is land and 0.6 square miles (1.6 km2) of it (21.94%) is water.