Allegheny County, Pennsylvania

Allegheny County is located in the southwest of the U.S. state of Pennsylvania.

Allegheny County is included in the Pittsburgh, PA Metropolitan Statistical Area, and in the Pittsburgh Designated Market Area.

Allegheny was the first county in Pennsylvania to be given a Native American name.

It was named after the Lenape word for the Allegheny River. The meaning of “Allegheny” is uncertain.

It is usually said to mean “fine river”. Stewart says that the name may come from a Lenape account of an ancient mythical tribe called “Allegewi”, who lived along the river before being taken over by the Lenape.