Town Hall Address 449 West Main Street Monongahela, PA 15063 United States- Washington County Website https://www.cityofmonongahela-pa.gov/ Deed Registry (724) 228-6806 http://tyler.washcopa.org/pt/forms/htmlframe.aspx?mode=content/home.htm 9:00 AM to 4:30 PM Monday thru Friday 100 W. Beau St. Washington, PA 15301 United States Tax Collector 724.258.9024 449 West Main Street Monongahela, PA 15063 United States Zoning 724.258.4750 449 West Main Street Monongahela, PA 15063 United States County Washington