Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Whiteoak Township is one of the seventeen townships of Highland County, Ohio, United States. The 2000 census found 1,374 people in the township, 1,001 of whom lived in the unincorporated portions of the township. The village of Mowrystown is located in southern Whiteoak Township. It is the only Whiteoak Township statewide.