Located in the northern part of the county, it borders the following townships: No municipalities are located in Austintown Township, although two census-designated places are located there: Austintown in the east (with 44% of the township's area and 81% of its population), and part of Mineral Ridge in the north.

The Meander Creek Reservoir occupies the western portion of the township.

Ax Factory Run creek flows west to east through central portion of the township with Woodside Lake forming a section of the creek.

Interstates 80 and 680 and State Route 11 are major traffic systems crossing Austintown.

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.