Romeoville, IL Area Code
Romeoville, Illinois (population 41,281) uses area code 309.
Romeoville has no telephone exchange of its own in NANPA records; it is served by the Sunnyland exchange about 7.2 km away.
Carriers with Romeoville numbers
4 prefixes are assigned to the Sunnyland exchange: 0% mobile, 50% VoIP and cable, 50% landline.
| Carrier | Prefixes |
|---|---|
| Frontier | 2 |
| Onvoy (Sinch) | 1 |
| Lumen (Level 3) | 1 |
Area codes used in Romeoville
| Area code | Prefixes serving Romeoville | Main carriers in this code |
|---|---|---|
| 309 | 4 | Frontier, AT&T (Illinois Bell), Onvoy (Sinch) |
Romeoville phone number prefixes
Numbers starting with these first six digits were originally assigned to the Sunnyland exchange.
309-505Onvoy (Sinch)309-717Lumen (Level 3)309-745Frontier309-819Frontier
Nearby cities in area code 309
- Peoria
- Bloomington
- Normal
- Moline
- Rock Island
- Pekin
- Galesburg
- East Peoria
- Crest Hill
- East Moline
- Morton
- Washington
Questions
- What is the area code for Romeoville, IL?
- The area code for Romeoville, Illinois is 309.
- What time zone is Romeoville in?
- Romeoville is in the Central time zone.