US Post Office is located at 103 E Main St, Ashkum, IL. This business specializes in Post Offices. US Post Office is open Mon, 8:05am-4:25pm; Tue, 8:05am-4:25pm; Wed, 8:05am-4:25pm; Thu, 8:05am-4:25pm; Fri, 8:05am-4:25pm; Sat, 10:25am-11:25am; Sun, Closed and accepts American Express, Discover, Mastercard and Visa.