| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Sid Place | city | Texas | United States | 29.83361 | -103.6525 | 3661 | 28 |
| Sidney | city | Texas | United States | 31.94917 | -98.73694 | 1423 | 384 |
| Sienna Plantation | city | Texas | United States | 29.48583 | -95.50778 | 52 | 4026 |
| Sierra Blanca | city | Texas | United States | 31.17444 | -105.35667 | 4534 | 19 |
| Sierra Chino | city | Texas | United States | 29.04 | -103.41333 | 2057 | 277 |
| Siesta Shores | city | Texas | United States | 26.85778 | -99.25333 | 380 | 5172 |
| Silas | city | Texas | United States | 31.82389 | -94.39778 | 347 | 1089 |
| Siloam | city | Texas | United States | 31.84083 | -98.33833 | 1102 | 313 |
| Siloam | city | Texas | United States | 30.42583 | -97.28389 | 498 | 927 |
| Siloam | city | Texas | United States | 33.36333 | -94.57306 | 298 | 729 |
| Silsbee | city | Texas | United States | 30.34889 | -94.17778 | 62 | 12424 |
| Silver | city | Texas | United States | 32.07083 | -100.68222 | 2096 | 192 |
| Silver City | city | Texas | United States | 30.90972 | -96.95 | 301 | 1815 |
| Silver City | city | Texas | United States | 31.97444 | -96.64028 | 446 | 972 |
| Silver City | city | Texas | United States | 33.48806 | -95.99917 | 597 | 817 |
| Silver City | city | Texas | United States | 33.85278 | -95.05944 | 377 | 439 |
| Silver Lake | city | Texas | United States | 32.66972 | -95.59556 | 380 | 1993 |
| Silver Valley | city | Texas | United States | 31.95639 | -99.54583 | 1998 | 129 |
| Silverton | city | Texas | United States | 34.47417 | -101.30417 | 3280 | 112 |
| Simmons | city | Texas | United States | 28.40583 | -98.28028 | 226 | 420 |
| Simmons Bottom | city | Texas | United States | 30.15694 | -94.88528 | 45 | 3201 |
| Simmonsville | city | Texas | United States | 30.96028 | -93.63222 | 183 | 421 |
| Simms | city | Texas | United States | 35.03333 | -102.65722 | 4124 | 47 |
| Simms | city | Texas | United States | 33.35028 | -94.50722 | 298 | 1062 |
| Simonton | city | Texas | United States | 29.67917 | -95.97694 | 104 | 1998 |
| Sims | city | Texas | United States | 30.66611 | -96.55139 | 242 | 1312 |
| Simsboro | city | Texas | United States | 31.67417 | -96.31583 | 505 | 1840 |
| Sinclair City | city | Texas | United States | 32.19833 | -95.07972 | 419 | 3345 |
| Singleton | city | Texas | United States | 30.65194 | -95.95833 | 331 | 565 |
| Sinton | city | Texas | United States | 28.03639 | -97.50889 | 45 | 7640 |
| Sipe Springs | city | Texas | United States | 32.09056 | -98.78389 | 1414 | 744 |
| Sisterdale | city | Texas | United States | 29.97278 | -98.72056 | 1338 | 894 |
| Sivells Bend | city | Texas | United States | 33.84972 | -97.22361 | 892 | 908 |
| Six Point | city | Texas | United States | 34.09361 | -101.80028 | 3451 | 652 |
| Sixmile Crossing | city | Texas | United States | 31.46889 | -100.34139 | 1801 | 8077 |
| Sixteen Corner Windmill | city | Texas | United States | 32.37389 | -102.25111 | 2972 | 224 |
| Sixteen Mile Crossing | city | Texas | United States | 31.54194 | -100.17806 | 1709 | 347 |
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