 Organized in 1858, it was named after County Tyrone in Ireland.According to the United States Census Bureau, the township has a total area of 36.2 square miles (93.7 km²), of which 36.1 square miles (93.4 km²) of it is land and 0.1 square miles (0.3 km²) of it (0.33%) is water.As of the census of 2000, there were 564 people, 212 households, and 171 families residing in the township.