US Post Office is located at 14 Wilgus Rd, Hillsdale, PA. This business specializes in Post Offices. US Post Office is open Mon, 8am-4:25pm ; Tue, 8am-4:25pm ; Wed, 8am-4:25pm ; Thu, 8am-4:25pm ; Fri, 8am-4:25pm ; Sat, 9am-12pm ; Sun, Closed. and accepts American Express, Discover and Visa.