High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Ottawa Township is one of the fifteen townships of Putnam County, Ohio, United States. The 2000 census found 7,961 people in the township, 2,675 of whom lived in the unincorporated portions of the township. It is the only Ottawa Township 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.