United States Government--postal Services, Philomont Purcellville, VA 20132 Phone : (540) 338-6687 Business Category Government Offices-Federal Government Offices & Public Schools Post Office - Philomont 36550 Jeb Stuart Rd Philomont, VA 20131 Phone : (540) 338-6687 Business Category Post Offices Toll-Free           (800) ASK-USPS Fax           (540) 338-6687