US Post Office is located at 106 W 5Th St, Earl Park, IN. This business specializes in Post Offices. US Post Office is open Mon, 8am-3:59pm; Tue, 8am-3:59pm; Wed, 8am-3:59pm; Thu, 8am-3:59pm; Fri, 8am-3:59pm; Sat, 8:05am-10:05am; Sun, Closed and accepts American Express, Discover, Mastercard and Visa.