How do i get my mail at radford? All on-campus student mail and courier items are delivered to the Campus Post Office. Please do not include the student's residence hall information; this can delay his/her mail. Radford University's zip code is 24142. The zip code for all non-RU street addresses in Radford is 24141.What are the hours of operation at radford university post office? The window is open 8:30 a.m.-4:30 p.m., Monday-Friday. Our staff is available for package pick-up, mailing USPS, stamps and money orders. We accept cash, checks and the ONE Card. The Radford University Post Office now has a fully-automated digital mail kiosk.What is the zip code for radford university? Radford University's zip code is 24142. The zip code for all non-RU street addresses in Radford is 24141.