Massillon is a city in Stark County in the U.S. state of Ohio, approximately 8 miles (13 km) west of Canton, 20 miles (32 km) south of Akron, and 50 miles (80 km) south of Cleveland. The population was 32,146 at the 2020 census. Massillon is the second largest incorporated area within the Canton–Massillon metropolitan area, which includes all of Stark and Carroll counties and had a population of 401,574 in 2020.