US Post Office is located at 207 Washington St, Brookline, MA. This business specializes in Post Offices. US Post Office is open Mon, 8am-6pm; Tue, 8am-6pm; Wed, 8am-6pm; Thu, 8am-6pm; Fri, 8am-6pm; Sat, 8am-3pm; Sun, Closed and accepts American Express, Discover, Mastercard and Visa.