Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pleasant Township is one of the fifteen townships of Seneca County, Ohio, United States. The 2000 census found 1,685 people in the township. It is one of fifteen Pleasant Townships statewide. The township is governed by a three-member board of trustees, who are elected in November of odd-numbered years to a four-year term beginning on the following January 1.