Ohio Township elects a board of three Supervisors, a property tax collector, and a constable.

In recent years, several retail outlets have been built near the Camp Horne Road interchange of Interstate 279.

Its creation was begun in December 1802, when a petition was filed in the court of quarter sessions.

After considerable discussion as to where the boundary line would be created, at the September term of 1803, the court confirmed absolutely a division line which is currently the western boundaries of the current jurisdictions of Pine, McCandless, and Ross townships and Bellevue Borough, including that area of Allegheny County located west of this boundary line and north of the Ohio River as well as including Neville Island.

Being situated on the "Indian side" of the Ohio River, the first Caucasian inhabitants did not appear more than a few years prior to 1800, as this section of the country was not open to settlement until 1792.

While the army was lying at Legionville (near present-day Baden), he was sent on some commission to Fort Pitt.

James Moore immigrated from Northumberland County with a large family about the same time.

In addition to these, the Crawfords, who settled on Lowrie's Run, have been numerously represented by their descendants, the Gillilands, the Ritchies, Shannons, and others.

The land for the church was donated by two local farmers, Hugh Thompson and William Duff.

According to the United States Census Bureau, the township has a total area of 6.9 square miles (18 km2), all land.