US Post Office is located at 519 Commercial Ave # 100, Anacortes, WA. 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, 10:05am-1:05pm; Sun, Closed and accepts American Express, Discover, Mastercard and Visa.