Mendon is a village in St. Joseph County in the U.S. state of Michigan. The population was 917 at the 2000 census. The village is located within Mendon Township.
According to the United States Census Bureau, the village has a total area of 0.8 square miles (2.0 km²), of which, 0.8 square miles (1.9 km²) of it is land and 1.32% is water.
The original county of St. Joseph was divided into townships. Mendon township was settled in 1831. The village of Mendon was platted in 1845.