Dubuque County ZIP Codes
Iowa, United States · 18 codes
Dubuque County in Iowa has 18 ZIP codes, from 52001 to 52099, serving 18 places.
ZIP codes in Dubuque
Frequently asked questions
What is the ZIP code of Dubuque?
Dubuque has 18 ZIP codes, from 52001 to 52099. The table lists the places each one serves.
How many places are listed in Dubuque County?
18 places.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.