United States Government--postal Service, Casanova 5137 Weston Rd Calverton, VA 20138 Phone : (540) 788-9042 Business Category Government Offices-Federal Government Offices & Public Schools United States Government--postal Service 5137 Weston Rd Casanova, VA 20139 Phone : (540) 788-9042 Business Category Government Offices-Federal Government Offices & Public Schools Post Office - Casanova 5137 Weston Rd Casanova, VA 20139 Phone : (540) 788-9042 Post Office - Casanova Business Category Post Offices Toll-Free           (800) ASK-USPS