US Post Office is located at 112 N Glendora Ave, Glendora, CA. This location is in the Glendora neighborhood. This business specializes in Post Offices. US Post Office is open Mon, 9am-6pm ; Tue, 9am-6pm ; Wed, 9am-6pm ; Thu, 9am-6pm ; Fri, 9am-6pm ; Sat, 9am-5pm ; Sun, Closed. and accepts Cash, Mastercard and Visa.