| Area Code | 409 |
| State | Texas |
| Current Time in Area Code 409 | 409> CST |
| Timezone | Central Standard Time |
| Regional Market Area | Beaumont-Port Arthur Area Lufkin Area Metro Houston |
| Metro Area(s) | Beaumont-Port Arthur, TX |
| Population (2020) | 877625 |
| Adjacent Area Codes | 281,318,337,346,713,832,936,979 |
| Chambers County |
| Galveston County |
| Hardin County |
| Jasper County |
| Jefferson County |
| Newton County |
| Orange County |
| Sabine County |
| San Augustine County |
| Tyler County |
| Beaumont |
| Galveston |
| Port Arthur |
| Texas City |