US Post Office is located at 4441 Rice St, Lihue, HI. This business specializes in Post Offices. US Post Office is open Mon, 8am-4pm; Tue, 8am-4pm; Wed, 8am-4pm; Thu, 8am-4pm; Fri, 8am-4pm; Sat, 9am-1pm; Sun, Closed and accepts American Express, Discover, Mastercard and Visa.