US Post Office is located at 9440 Old Solomons Island Rd, Owings, MD. This business specializes in Post Offices. US Post Office is open Mon, 9am-4:05pm; Tue, 9am-4:05pm; Wed, 9am-4:05pm; Thu, 9am-4:05pm; Fri, 9am-4:05pm; Sat, 9am-12am; Sun, Closed and accepts American Express, Discover, Mastercard and Visa.