Town Hall Address 889 Milledgeville Rd Hadley, PA 16130 United States- Mercer County Website https://www.mcc.co.mercer.pa.us/TOWNSHIP/deer_creek.htm 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 Tax Collector 724-253-4529 889-A Milledgeville, Rd. Hadley, PA 16130 United States Code Enforcement 724-927-2020 7531 South Lake Rd. Jamestown, PA 16134 United States County Mercer