Town Hall Address 327 Burns Road Slippery Rock, PA 16057 United States- Lawrence County Website http://plaingrovetwp.org/index.html Deed Registry (724) 656-2131 https://www.courthousedirect.com/PropertySearch/Pennsylvania/Lawrence 430 Court Street New Castle, PA 16101 United States Tax Collector 724-391-4943 327 Burns Road Slippery Rock, PA 16057 United States Zoning 724 794 4707 327 Burns Road Slippery Rock, PA 16057 United States County Lawrence