Ottawa, IL Area Code
Ottawa, Illinois (population 18,684) uses area code 815.
Carriers with Ottawa numbers
11 prefixes are assigned to the Ottawa exchange: 0% mobile, 45% VoIP and cable, 55% landline.
| Carrier | Prefixes |
|---|---|
| Lumen (Level 3) | 3 |
| AT&T (Illinois Bell) | 3 |
| AT&T (Teleport) | 2 |
| Mcc Telephony | 1 |
| First Communications | 1 |
| Rcn Telecom Services Of Illinios | 1 |
Area codes used in Ottawa
| Area code | Prefixes serving Ottawa | Main carriers in this code |
|---|---|---|
| 815 | 11 | Frontier, AT&T (Illinois Bell), Lumen (Level 3) |
Ottawa phone number prefixes
Numbers starting with these first six digits were originally assigned to the Ottawa exchange.
815-313Lumen (Level 3)815-324Mcc Telephony815-366Lumen (Level 3)815-431AT&T (Illinois Bell)815-433AT&T (Illinois Bell)815-434AT&T (Illinois Bell)815-587Lumen (Level 3)815-606First Communications815-617AT&T (Teleport)815-640AT&T (Teleport)815-665Rcn Telecom Services Of Illinios
Nearby cities in area code 815
- Joliet
- Rockford
- Plainfield
- Crystal Lake
- DeKalb
- McHenry
- New Lenox
- Lockport
- Woodstock
- Belvidere
- Homer Glen
- Loves Park
Questions
- What is the area code for Ottawa, IL?
- The area code for Ottawa, Illinois is 815.
- What time zone is Ottawa in?
- Ottawa is in the Central time zone.