US Post Office is located at 5438 Southpoint Plaza Way, Fredericksburg, VA. 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-3pm; Sun, Closed and accepts American Express, Cash, Discover, Mastercard and Visa.