Area Code 331
Area code 331 serves Illinois, including Aurora. It is listed as a geographic area code in United States.
Area Code 331 Summary
- Area code
- 331
- Region
- Illinois
- Country
- United States
- Major cities
- Aurora, Naperville, Wheaton
- Timezone
- CT
- Current local time
- CT: 3:09amCT: 3:09am
- Type
- geographic
- Overlays
- 630