Area Code 312
Area code 312 serves Illinois, including Chicago. It is listed as a geographic area code in United States.
Area Code 312 Summary
- Area code
- 312
- Region
- Illinois
- Country
- United States
- Major cities
- Chicago
- Timezone
- CT
- Current local time
- CT: 3:09amCT: 3:09am
- Type
- geographic
- Overlays
- 872