US Post Office is located at 724 F St, Rupert, ID. This business specializes in Post Offices. US Post Office is open Mon, 9am-5pm; Tue, 9am-5pm; Wed, 9am-5pm; Thu, 9am-5pm; Fri, 9am-5pm; Sat, 10am-12pm; Sun, Closed and accepts American Express, Discover, Mastercard and Visa.