Monongahela Area Historical Society Museum

230 West Main Street
Monongahela, PA 15063 [ map ] [ website ]
Phone: 724-322-4247


Formed and chartered in 1961, the Monongahela Area Historical Society is a valuable resource for anyone wishing to appreciate the small town of Monongahela.

What is now Monongahela was founded in 1769 on a tract of land near the confluence of Pigeon Creek and the Monongahela River. It is the oldest settlement in the Monongahela River Valley and most likely the oldest in Washington County. The original tract of land was actually owned by three different men, who named their land areas Eden, Paradise and Gloucester. Today's population is just under 5,000 people.

The society's museum is housed in an attractive storefront brightened by large windows and crowned with a beautiful tin ceiling. Inside is a multi-purpose room displaying rare historic pieces, computer workstations for historic and geneological research and a sizable library.

Hours of operation

Tuesday, 3:00 p.m. to 8:00 p.m.
Wednesday & Thursday, 10:00a.m. to 4:00 p.m.
Saturday, 10:00 a.m. to 2:00 p.m.


On-street parking is available.

In partnership with Pittsburgh A&E Group