Area codes in Dubuque, Iowa
Dubuque, Iowa uses area code 563. The main Dubuque area code is 563.
Area codes serving Dubuque
Phone numbers in Dubuque are written as ten digits — for example (563) 555-0190 — and fall in the Central Time zone.
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
More cities in Iowa
Frequently asked questions
What is the area code for Dubuque?
The main area code for Dubuque, Iowa is 563.
How many area codes does Dubuque have?
Dubuque has 1 area code: 563.
How do you dial a Dubuque number?
Dial all 10 digits — the area code (563) followed by the 7-digit local number. From abroad, dial +1, then the area code and number.
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.