| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Sid Place | city | Texas | United States | 29.83 | -103.65 | 3661 | |
| Sidney | city | Texas | United States | 31.95 | -98.74 | 1669 | |
| Sienna Plantation | city | Texas | United States | 29.49 | -95.51 | 52 | |
| Sierra Alto Mobile Home Colonia | city | Texas | United States | 26.17 | -97.85 | 52 | |
| Sierra Blanca | city | Texas | United States | 31.17 | -105.36 | 4534 | |
| Sierra Chino | city | Texas | United States | 29.04 | -103.41 | 2057 | |
| Sierra Meadows Colonia | city | Texas | United States | 31.57 | -106.26 | 3635 | |
| Siesta Acres | city | Texas | United States | 28.76 | -100.49 | 830 | |
| Siesta Shores | city | Texas | United States | 26.86 | -99.25 | 380 | |
| Siesta Shores 1 Colonia | city | Texas | United States | 26.86 | -99.25 | 400 | |
| Siesta Shores 3 Colonia | city | Texas | United States | 26.86 | -99.26 | 400 | |
| Siesta Shores Section A Colonia | city | Texas | United States | 26.86 | -99.25 | 380 | |
| Siesta Village Number 1 Colonia | city | Texas | United States | 26.13 | -97.96 | 62 | |
| Siesta Village Number 2 Colonia | city | Texas | United States | 26.13 | -97.96 | 62 | |
| Siesta Village Number 3 Colonia | city | Texas | United States | 26.13 | -97.96 | 62 | |
| Siesta Village Number 4 Colonia | city | Texas | United States | 26.13 | -97.96 | 62 | |
| Siez Tract Colonia | city | Texas | United States | 26.33 | -98.13 | 78 | |
| Silas | city | Texas | United States | 31.82 | -94.40 | 347 | |
| Siloam | city | Texas | United States | 30.43 | -97.28 | 830 | |
| Siloam | city | Texas | United States | 31.84 | -98.34 | 1102 | |
| Siloam | city | Texas | United States | 33.36 | -94.57 | 298 | |
| Silsbee | city | Texas | United States | 30.35 | -94.18 | 62 | |
| Silver | city | Texas | United States | 32.07 | -100.68 | 2509 | |
| Silver City | city | Texas | United States | 31.97 | -96.64 | 830 | |
| Silver City | city | Texas | United States | 30.91 | -96.95 | 301 | |
| Silver City | city | Texas | United States | 33.85 | -95.06 | 377 | |
| Silver City | city | Texas | United States | 33.49 | -96.00 | 830 | |
| Silver Creek Village | city | Texas | United States | 30.86 | -98.40 | 1089 | |
| Silver Hills | city | Texas | United States | 29.78 | -98.60 | 1669 | |
| Silver Lake | city | Texas | United States | 32.67 | -95.60 | 380 | |
| Silver Spur Estates Colonia | city | Texas | United States | 28.00 | -97.93 | 183 | |
| Silver Valley | city | Texas | United States | 31.96 | -99.55 | 1998 | |
| Silverado Colonia | city | Texas | United States | 26.24 | -98.41 | 144 | |
| Silvermill | city | Texas | United States | 29.82 | -95.71 | 118 | |
| Silverton | city | Texas | United States | 34.47 | -101.30 | 3349 | |
| Simmons | city | Texas | United States | 28.41 | -98.28 | 226 | |
| Simmons Bottom | city | Texas | United States | 30.16 | -94.89 | 45 | |
| Simmonsville | city | Texas | United States | 30.96 | -93.63 | 183 | |
| Simms | city | Texas | United States | 35.03 | -102.66 | 4189 | |
| Simms | city | Texas | United States | 33.35 | -94.51 | 298 | |
| Simonton | city | Texas | United States | 29.68 | -95.98 | 104 | |
| Simpatico Acres Colonia | city | Texas | United States | 26.37 | -98.24 | 124 | |
| Simpsonville | city | Texas | United States | 32.86 | -95.07 | 396 | |
| Simpsonville | city | Texas | United States | 28.78 | -96.12 | 16 | |
| Sims | city | Texas | United States | 30.67 | -96.55 | 242 | |
| Simsboro | city | Texas | United States | 31.67 | -96.32 | 830 | |
| Sinclair City | city | Texas | United States | 32.20 | -95.08 | 830 | |
| Singleton | city | Texas | United States | 30.65 | -95.96 | 331 | |
| Sings Colonia | city | Texas | United States | 26.16 | -98.20 | 98 | |
| Sinton | city | Texas | United States | 28.04 | -97.51 | 45 | |
| Sioux Terrace Colonia | city | Texas | United States | 26.22 | -98.16 | 104 | |
| Sioux Terrace South Colonia | city | Texas | United States | 26.21 | -98.16 | 104 | |
| Sipe Springs | city | Texas | United States | 32.09 | -98.78 | 1669 | |
| Sisterdale | city | Texas | United States | 29.97 | -98.72 | 1253 | |
| Sivells Bend | city | Texas | United States | 33.85 | -97.22 | 892 | |
| Six Point | city | Texas | United States | 34.09 | -101.80 | 3451 | |
| Sixmile | city | Texas | United States | 28.69 | -96.69 | 22 | |
| Sixmile Crossing | city | Texas | United States | 31.47 | -100.34 | 1801 | |
| Sixteen Corner Windmill | city | Texas | United States | 32.37 | -102.25 | 3349 | |
| Sixteen Mile Crossing | city | Texas | United States | 31.54 | -100.18 | 1709 |