Town Hall Address 35 Auction Rd New Wilmington, PA 16142 United States- Mercer County Website http://www.wilmingtontownship.com/ Deed Registry (724) 662-3800 http://www.mercerassessor.com/ias-portal Monday - Friday 8:30 am - 4:30 pm 109 Courthouse Mercer, PA 16137 United States County Mercer