US Post Office is located at 301 Water St, Boyne City, MI. 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, 10am-12:05pm; Sun, Closed and accepts American Express, Discover, Mastercard and Visa.