Area codes in Dubuque, Iowa
Dubuque, Iowa uses area code 563. The main Dubuque area code is 563.
Area codes serving Dubuque
All Iowa area codes · Is a Dubuque call a scam?
Nearby cities
- Cedar Rapids area codes
- Davenport area codes
- Iowa City area codes
- Madison area codes
- Rockford area codes
- Janesville area codes
- DeKalb area codes
- Watertown area codes
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of June 20, 2026. Refreshed monthly.