Town Hall Address 852 N. Perry Hwy Mercer, PA 16137 United States- Mercer County Website https://www.mcc.co.mercer.pa.us/TOWNSHIP/coolspring.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 800-383-4870 3608 W 26th St #102 Erie, PA 16506 United States Code Enforcement 724-406-0031 2879 Mercer Butler Pike Grove City, PA 16127 United States County Mercer