USPS Location
- Waterloo
305 E 3rd St, Waterloo, IL 62298
618-939-7317
Bulk Mail Acceptance, Bulk Mail Account Balance, Burial Flags, Business Reply Mail Account Balance, Business Reply Mail New Permit, Duck Stamps, General Delivery, Money Orders (Domestic), Money Orders (Inquiry), Money Orders (International), PO Box Online, Passport Acceptance, Pickup Accountable Mail, Pickup Hold Mail, Priority Mail International