United States Government--postal Service, Local Area Post Offices, Chaffee 11439 Olean Rd Chaffee, NY 14030 Phone : (716) 496-7322 Business Category Post Offices Government Offices & Public Schools Post Office - Chaffee 11439 Olean Rd Chaffee, NY 14030 Phone : (716) 496-7322 Business Category Post Offices Toll-Free           (800) ASK-USPS