US Post Office is located at 310 W Main St, Arcadia, WI. This business specializes in Post Offices. US Post Office is open Mon, 8am-4:05pm; Tue, 8am-4:05pm; Wed, 8am-4:05pm; Thu, 8am-4:05pm; Fri, 8am-4:05pm; Sat, Closed; Sun, Closed and accepts American Express, Discover, Mastercard and Visa.