Dubuque, IA ZIP Codes
Dubuque, Iowa has 5 ZIP codes: 3 for street addresses (, and ), 1 for PO boxes () and 1 for a single organization.
Your street decides which one you use.
Which Dubuque ZIP code is my address in?
Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?
Dubuque ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
52004 and 52099 have no area on the map: they are PO box or single-organization ZIP codes. Dashed line: Dubuque city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Dubuque ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 52001 | street delivery West Side Annex |
| 52002 | street delivery West Side Annex |
| 52003 | street delivery West Side Annex |
| 52004 | PO boxes at the Dubuque post office Dubuque |
| 52099 | one organization Dubuque |
ZIP codes from nearby towns that reach into Dubuque
- 52068, mailing town Peosta, covers 4 percent of Dubuque
Why your mail may say Dubuque when you live outside it
Dubuque ZIP codes also cover Asbury and Sageville, so a letter addressed to Dubuque can go to a home outside the city limits.
The reverse happens too: parts of Dubuque use 52068, which mails under a neighboring town's name.
A ZIP code does not set your city, school district or tax. Dubuque County property records show which city you are in.
Dubuque ZIP code questions
What is the main ZIP code for Dubuque?
52001, the ZIP code of the main West Side Annex post office at 4555 Futuro Ct.
Which Dubuque ZIP codes are for PO boxes only?
52004. Mail to it goes to boxes at the post office, not to street addresses.
What county is Dubuque in?
Dubuque County.
ZIP codes for towns near Dubuque
More towns near Dubuque: Iowa City, Fitchburg, Madison, Waterloo, Rockford, Beloit, Janesville, Sun Prairie, Cedar Falls.
Sources and last checked
USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.
Checked October 20, 2026. Sources · How we build our lists · Corrections