USPS Location
- Mark
106 W Hennepin St, Mark, IL 61340
815-339-6273
Bulk Mail Acceptance, Bulk Mail Account Balance, Bulk Mail New Permit, Business Line, Business Reply Mail Account Balance, Business Reply Mail New Permit, Money Orders (Domestic), Money Orders (Inquiry), PO Box Online, Packaged Stamps, Philatelic Services, Pickup Accountable Mail, Pickup Hold Mail, Priority Mail International