Opening Hours of Post Office Carson - Pittsburgh (PA) in Pittsburgh, PA on 1731 E Carson St. Location, phone number, operating hours, services available and other post offices near you. Carson Post Office in Pittsburgh, Pennsylvania on E Carson St. Operating hours, phone number, services information, and other locations near you. Carson Post Office in Pennsylvania, PA 15203. Operating hours, phone number, services information, and other locations near you. Hours of operation Mon-Fri 9:00am - 5:00pm Sat 9:00am - 12:00pm Sun Closed Phone for contact: Phone 412-431-1057 Fax 412-481-1694 TTY 877-889-2457 Collection hours (Last) Mon-Fri 5:00pm Sat 12:00pm Sun Closed US POST OFFICE, 1731 E Carson St, Pittsburgh, PA 15203, (412) 431-1057, Mon - 9:00 am - 5:00 pm, Tue - 9:00 am - 5:00 pm, Wed - 9:00 am - 5:00 pm, Thu - 9:00 am - 5:00 pm, Fri - 9:00 am - 5:00 pm, Sat - 9:00 am - 12:00 pm, Sun - Closed Find hours, phone number, and directions for the Pittsburgh Post Office on E Carson St in PA. Check today’s hours before you go. United States Postal Service at 1731 E Carson St, Pittsburgh PA 15203 - hours, address, map, directions, phone number, customer ratings and reviews. Phone: 412-431-1057. Hours: Mon-Fri: 09:00 AM - 05:00 PM | Sat: 09:00 AM - 12:00 PM | Sun: Closed. The South Side Pittsburgh Post Office is located at 1731 East Carson Street, Pittsburgh PA. For facility accessibility, please call the Post Office. 1-800-ASK-USPS® (800-275-8777).