ZIP Codes in Duluth, MN
Duluth uses 11 ZIP codes, all in St. Louis County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 11 Duluth ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 55802 | standard | St. Louis | 2,399 |
| 55803 | standard | St. Louis | 17,662 |
| 55804 | standard | St. Louis | 15,922 |
| 55805 | standard | St. Louis | 10,602 |
| 55806 | standard | St. Louis | 9,356 |
| 55807 | standard | St. Louis | 9,763 |
| 55808 | standard | St. Louis | 5,691 |
| 55810 | standard | St. Louis | 8,285 |
| 55811 | standard | St. Louis | 28,118 |
| 55812 | standard | St. Louis | 10,859 |
| 55814 | standard | St. Louis | 319 |
Finding a ZIP+4 in Duluth
Knowing which of these 11 ZIP codes covers an address only gets you partway. The four-digit extension identifies the specific delivery point — typically one side of one block. Two houses facing each other on the same Duluth street almost always have different ZIP+4 codes even though they share all five leading digits.
Appending ZIP+4 to a mailing list?
Upload a CSV of Duluth addresses and download it complete.