Mount Royal
Post Office
Mon-Fri 8:30am - 5:00pm, Sat 9:00am - 12:30pm, Sun Closed
Duluth, MN Post Offices
Listing data as of July 31, 2026 · Confirm on USPS.com
Duluth has 3 locations serving ZIP codes 55803, 55806 and 55810, spanning about 8.8 miles. Each location sets its own hours and services, so confirm before you visit — see the cards below for the one nearest you.
Change of Address
File your address change directly with USPS to forward your mail.
Hold Mail Service
Pause mail delivery for up to 30 days, free, while you're away.
Money Orders
Money orders are a safe way to send payments through the mail. See current fees and maximum amounts.
All 3 locations in Duluth
Sorted by ZIP code.
Duluth
Post Office
Call ahead for hours
Proctor
Post Office
Mon-Fri 9:00am - 1:00pm 1:30pm - 4:30pm, Sat-Sun Closed
Helpful Guides
Missing Mail & Lost Packages
Tracking says delivered but it's not there? See where to check first, and how to file a Missing Mail search or claim.
Learn more →Certified Mail
See what Certified Mail costs, how to send it, and exactly what happens if no one's available to sign for it.
Learn more →Apply for a PO Box
PO Box sizes and pricing vary by location and demand. Compare available box sizes, check what's currently open near you, and see what's needed to apply — in person or online.
Learn more →Post Office Weekend Hours
Weekend hours vary a lot by location. See typical Saturday and Sunday patterns before you plan a trip to the post office.
Learn more →General Delivery
Need to receive mail without a fixed address? See how to address it for General Delivery and find a post office that offers it.
Learn more →Post Office Holiday Schedule
Post offices close for all federal holidays, affecting both retail service and mail delivery. See this year's full holiday schedule so you can plan ahead.
Learn more →