Monmouth, IL Area Code
Monmouth, Illinois (population 8,599) uses area code 309.
Carriers with Monmouth numbers
8 prefixes are assigned to the Monmouth exchange: 13% mobile, 13% VoIP and cable, 75% landline.
| Carrier | Prefixes |
|---|---|
| Frontier | 2 |
| Verizon Wireless | 1 |
| Mtc Communications | 1 |
| Lumen (Level 3) | 1 |
| Ip Horizon | 1 |
| Nuso | 1 |
| Exiant Communications | 1 |
Area codes used in Monmouth
| Area code | Prefixes serving Monmouth | Main carriers in this code |
|---|---|---|
| 309 | 8 | Frontier, AT&T (Illinois Bell), Onvoy (Sinch) |
Monmouth phone number prefixes
Numbers starting with these first six digits were originally assigned to the Monmouth exchange.
309-457Frontier309-536Verizon Wireless309-715Mtc Communications309-734Frontier309-760Lumen (Level 3)309-816Ip Horizon309-971Nuso309-990Exiant Communications
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 Monmouth, IL?
- The area code for Monmouth, Illinois is 309.
- What time zone is Monmouth in?
- Monmouth is in the Central time zone.