Jackson 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 3,861 people in the township, 2,774 of whom lived in the unincorporated portions of the township.GeographyLocated in the northwestern part of the county, it borders the following townships: Cass Township - northBlooming Grove Township - northeast cornerFranklin Township - eastMadison Township - southeast cornerSpringfield Township - southSharon Township - westPlymouth Township - northwest corner Part of the city of Shelby is located in northwestern Jackson Township.Name and historyIt is one of thirty-seven Jackson Townships statewide.