US Post Office is located at 310 Tipton St, Salix, IA. This business specializes in Post Offices. US Post Office is open Mon, 7am-5pm; Tue, 7am-5pm; Wed, 7am-5pm; Thu, 7am-5pm; Fri, 7am-5pm; Sat, 7:05am-8:05am; Sun, Closed and accepts American Express, Discover, Mastercard and Visa.