Madison Township is one of thirteen townships in St. Joseph County, in the U.S. state of Indiana.

[3] As of the 2000 census, its population was 1,770.

[4] According to the United States Census Bureau, Madison Township covers an area of 52.12 square miles (135.0 km2); of this, 52.11 square miles (135.0 km2) (99.98 percent) is land and 0.01 square miles (0.026 km2) (0.02 percent) is water.

(This list is based on USGS data and may include former settlements.)