US Post Office is located at 4500 Maple St, Dearborn, MI. This business specializes in Post Offices. US Post Office is open Mon, 8:05am-3pm; Tue, 8:05am-3pm; Wed, 8:05am-3pm; Thu, 8:05am-3pm; Fri, 8:05am-3pm; Sat, Closed; Sun, Closed and accepts American Express, Discover, Mastercard and Visa.