St. Charles, IL Area Codes
St. Charles, Illinois (population 33,594) uses area codes 331 and 630.
Carriers with St. Charles numbers
35 prefixes are assigned to the St. Charles exchange: 46% mobile, 26% VoIP and cable, 29% landline.
| Carrier | Prefixes |
|---|---|
| AT&T Mobility | 9 |
| Verizon Wireless | 7 |
| AT&T (Illinois Bell) | 7 |
| Paetec Itel | 3 |
| Onvoy (Sinch) | 2 |
| Lumen (Level 3) | 2 |
| Verizon Business (MCImetro) | 2 |
| Peerless Network | 1 |
Area codes used in St. Charles
| Area code | Prefixes serving St. Charles | Main carriers in this code |
|---|---|---|
| 331 | 18 | Onvoy (Sinch), T-Mobile, Verizon Wireless |
| 630 | 17 | AT&T (Illinois Bell), AT&T Mobility, T-Mobile |
St. Charles phone number prefixes
Numbers starting with these first six digits were originally assigned to the St. Charles exchange.
331-210Peerless Network331-222AT&T Mobility331-223AT&T Mobility331-228Paetec Itel331-235AT&T Mobility331-266AT&T Mobility331-272Onvoy (Sinch)331-276Verizon Wireless331-286Verizon Wireless331-314Verizon Wireless331-327Verizon Wireless331-335AT&T Mobility331-349AT&T Mobility331-422Lumen (Level 3)331-442Verizon Wireless331-588AT&T Mobility331-771Onvoy (Sinch)331-901Bandwidth630-338AT&T Mobility630-377AT&T (Illinois Bell)630-443AT&T (Illinois Bell)630-444AT&T (Illinois Bell)630-485Paetec Itel630-488Verizon Wireless630-513AT&T (Illinois Bell)630-524Lumen (Level 3)630-549AT&T (Teleport)630-584AT&T (Illinois Bell)630-587AT&T (Illinois Bell)630-659Verizon Wireless630-715AT&T Mobility630-762AT&T (Illinois Bell)630-797Verizon Business (MCImetro)630-940Paetec Itel630-945Verizon Business (MCImetro)
Nearby cities in area code 331
- Aurora
- Naperville
- Schaumburg
- Bolingbrook
- Wheaton
- Downers Grove
- Elmhurst
- Lombard
- Bartlett
- Oswego
- Carol Stream
- Streamwood
Questions
- What is the area code for St. Charles, IL?
- St. Charles uses 2 area codes: 331 and 630. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.
- What time zone is St. Charles in?
- St. Charles is in the Central time zone.