USPS Location
- Oldtown
19104 Opessa St Se, Oldtown, MD 21555
301-478-5601
Bulk Mail Acceptance, Bulk Mail Account Balance, Bulk Mail New Permit, Burial Flags, Business Reply Mail New Permit, General Delivery, Money Orders (Domestic), Money Orders (Inquiry), Money Orders (International), PO Box Online, Philatelic Services, Pickup Accountable Mail, Pickup Hold Mail, Priority Mail International