Post Office - New Market 2020 Pine Ave Frnt A Niagara Falls, NY 14301 Phone : (716) 284-0233 Business Category Post Offices Toll-Free           (800) ASK-USPS Automated Postal Center - New Market 2020 Pine Ave Frnt A Niagara Falls, NY 14301 Phone : (716) 284-0233 Business Category Automated Postal Centers Toll-Free           (800) ASK-USPS