| Area Code | 936 |
| State | Texas |
| Current Time in Area Code 936 | 936> CDT |
| Timezone | Central Daylight Time |
| Regional Market Area | Bryan-College Station Area Lufkin Area Metro Houston Shreveport Area |
| Metro Area(s) | Huntsville, TX Lufkin, TX Nacogdoches, TX |
| Population (2020) | 1176251 |
| Adjacent Area Codes | 281,318,346,409,430,713,832,903,979 |
| Angelina County |
| Grimes County |
| Houston County |
| Liberty County |
| Madison County |
| Montgomery County |
| Nacogdoches County |
| Polk County |
| San Jacinto County |
| Shelby County |
| Trinity County |
| Walker County |
| Waller County |
| Conroe |
| Huntsville |
| Lufkin |
| Nacogdoches |