USPS Location
- Spring Gap
13400 Oldtown Rd, Spring Gap, MD 21560
301-777-8146
Bulk Mail Acceptance, Bulk Mail Account Balance, Bulk Mail New Permit, Business Line, Business Reply Mail Account Balance, Business Reply Mail New Permit, General Delivery, Money Orders (Domestic), Money Orders (Inquiry), PO Box Online, Philatelic Services, Pickup Accountable Mail, Pickup Hold Mail