Chesterton is a town in Westchester, Jackson and Liberty townships in Porter County, in the U.S. state of Indiana. The population was 14,241 at the 2020 Census. The three towns of Chesterton, Burns Harbor, and Porter are known as the Duneland area.

Westchester Township is one of twelve townships in Porter County, Indiana. It is included in the Calumet, Northwest Indiana, and Great Lakes regions. It is located on the southern shore of Lake Michigan, about 50 miles (80 km) southeast of Chicago. It stretches from the famous Indiana Dunes on its northern border, south to the Valparaiso Moraine, a ridge of rolling hills left by the last glacier to pass through the area. As of the 2010 census, its population was 19,396.