Founded in 1846, Smith County is one of 254 counties in the state of Texas. Historically, Smith County was formed from Nacogdoches County. The city of Tyler is the county seat. With FIPS code of 423, Smith County has a population of 237,186 and area of 928 square miles (2,404 km2).
List of all cities in Smith County, TX alphabetically
| City/Town | Postal Code | Area Code |
| Arp, TX | 75750 | 903/430 |
| Bascom, TX | 75705 | 903/430 |
| Bullard, TX | 75757 | 903/430 |
| Chapel Hill, TX | 75707 | 903/430 |
| Dogwood City, TX | 75762 | 903/430 |
| East Texas Center, TX | 75708 | 903/430 |
| Emerald Bay, TX | 75757 | 903/430 |
| Flint, TX | 75762 | 903/430 |
| Garden Valley, TX | 75771 | 903/430 |
| Griffin, TX | 75789 | 903/430 |
| Henrys Chapel, TX | 75789 | 903/430 |
| Hide a Way, TX | 75771 | 903/430 |
| Hide A Way Lake, TX | 75771 | 903/430 |
| Hideaway, TX | 75771 | 903/430 |
| Lindale, TX | 75771 | 903/430 |
| Mixon, TX | 75789 | 903/430 |
| Mount Selman, TX | 75757 | 903/430 |
| Mount Sylvan, TX | 75771 | 903/430 |
| Noonday, TX | 75762 | 903/430 |
| Old Larissa, TX | 75757 | 903/430 |
| Omen, TX | 75705 | 903/430 |
| Saint Louis, TX | 75701 | 903/430 |
| Sinclair City, TX | 75789 | 903/430 |
| Starrville, TX | 75792 | 903/430 |
| Swan, TX | 75704 | 903/430 |
| Teaselville, TX | 75757 | 903/430 |
| Thedford, TX | 75771 | 903/430 |
| Troup, TX | 75789 | 903/430 |
| Tyler, TX | 75701 | 903/430 |
| 75702 | 903/430 | |
| 75703 | 903/430 | |
| 75704 | 903/430 | |
| 75705 | 903/430 | |
| 75706 | 903/430 | |
| 75707 | 903/430 | |
| 75708 | 903/430 | |
| 75709 | 903/430 | |
| 75710 | 903/430 | |
| 75711 | 903/430 | |
| 75712 | 903/430 | |
| 75713 | 903/430 | |
| 75798 | 903/430 | |
| 75799 | 903/430 | |
| Tyler Junior College, TX | 75798 | 903/430 |
| University of Texas at Tyler, TX | 75799 | 903/430 |
| Walnut Grove, TX | 75789 | 903/430 |
| Waters Bluff, TX | 75792 | 903/430 |
| Whitehouse, TX | 75791 | 903/430 |
| Winona, TX | 75792 | 903/430 |
| Wood Springs, TX | 75771 | 903/430 |