Washington, IL Area Code
Washington, Illinois (population 15,902) uses area code 309.
Carriers with Washington numbers
6 prefixes are assigned to the Washington exchange: 17% mobile, 50% VoIP and cable, 33% landline.
| Carrier | Prefixes |
|---|---|
| Onvoy (Sinch) | 2 |
| Frontier | 2 |
| Lumen (Level 3) | 1 |
| T-Mobile | 1 |
Area codes used in Washington
| Area code | Prefixes serving Washington | Main carriers in this code |
|---|---|---|
| 309 | 6 | Frontier, AT&T (Illinois Bell), Onvoy (Sinch) |
Washington phone number prefixes
Numbers starting with these first six digits were originally assigned to the Washington exchange.
309-309Onvoy (Sinch)309-444Frontier309-481Lumen (Level 3)309-501T-Mobile309-886Frontier309-951Onvoy (Sinch)
Nearby cities in area code 309
- Peoria
- Bloomington
- Normal
- Moline
- Romeoville
- Rock Island
- Pekin
- Galesburg
- East Peoria
- Crest Hill
- East Moline
- Morton
Questions
- What is the area code for Washington, IL?
- The area code for Washington, Illinois is 309.
- What time zone is Washington in?
- Washington is in the Central time zone.