US Post Office is located at 42 Main St, Slatersville, RI. This business specializes in Post Offices. US Post Office is open Mon, 9am-4:05pm ; Tue, 9am-4:05pm ; Wed, 9am-4:05pm ; Thu, 9am-4:05pm ; Fri, 9am-4:05pm ; Sat, 9am-12pm ; Sun, Closed. and accepts American Express, Discover and Visa.