US Post Office is located at 202 E Krack St, Forrest, IL. 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-11am; Sun, Closed and accepts American Express, Discover, Mastercard and Visa.