| General Information about Area Code 309 | |
|---|---|
| Country | United States |
| State / Province / Territory | Illinois |
| Major City | Peoria |
| Time Zone | Central (UTC-06:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 309-244 | Delavan | Tazewell | Landline |
| 309-344 | Galesburg | Knox | Landline |
| 309-338 | Fairview | Fulton | Wireless |
| 309-828 | Bloomington | Mclean | Landline |
| 309-566 | Peoria | Peoria | Landline |
| 309-715 | Monmouth | Warren | Landline |
| 309-797 | Moline | Rock Island | Landline |
| 309-556 | Bloomington | Mclean | Landline |
| 309-315 | Galesburg | Knox | Landline |
| 309-212 | Bloomington | Mclean | Wireless |
| 309-730 | Hudson | Mclean | Landline |
| 309-505 | Washington | Tazewell | Landline |
| 309-935 | Annawan | Henry | Landline |
| 309-210 | Peoria | Peoria | Landline |
| 309-543 | Havana | Mason | Landline |
| 309-290 | Mineral | Bureau | Landline |
| 309-821 | Bloomington | Mclean | Landline |
| 309-584 | Joy | Mercer | Landline |
| 309-738 | Moline | Rock Island | Wireless |
| 309-834 | Bloomington | Mclean | Landline |