Springfield Township is one of the eighteen townships of Richland County, Ohio, United States. It is a part of the Mansfield Metropolitan Statistical Area. The 2000 census found 9,674 people in the township, 4,371 of whom lived in the unincorporated portions of the township.GeographyLocated in the western part of the county, it borders the following townships: Jackson Township - northFranklin Township - northeast cornerMadison Township - eastWashington Township - southeast cornerTroy Township - southSandusky Township - westSharon Township - northwest Two cities are located in Springfield Township: part of Mansfield — the county seat of Richland County — in the northeast, and Ontario in the center.According to the United States Census Bureau, the township has a total area of 36.6 square miles (58.9 km²).All of the township is land and none of it is covered with water.