Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Summerville | Populated Place | 89 | Gonzales | 29 27 19 N | 097 28 14 W |
| Summerwood Colonia | Populated Place | 25 | Hidalgo | 26 21 15 N | 098 07 17 W |
| Summit | Locale | 446 | Burnet | 30 45 06 N | 098 10 08 W |
| Summit | Locale | 677 | Motley | 33 58 22 N | 100 36 53 W |
| Summit Fillmore Park | Park | 1258 | El Paso | 31 49 00 N | 106 27 38 W |
| Summit Hospital of Central Texas | Hospital | 182 | Travis | 30 20 18 N | 097 40 38 W |
| Summit School | School | 1111 | Potter | 35 13 24 N | 101 52 05 W |
| Summit School | School | 236 | Travis | 30 23 44 N | 097 43 10 W |
| Summit Trail | Trail | 550 | Llano | 30 30 22 N | 098 49 06 W |
| Summitt Baptist Chapel Church | Church | 978 | Lubbock | 33 30 18 N | 101 52 29 W |
| Summitt Baptist Church | Church | 1120 | Potter | 35 13 08 N | 101 51 53 W |
| Summitt Elementary School | School | 247 | Travis | 30 25 08 N | 097 43 14 W |
| Sumner | Populated Place | 173 | Lamar | 33 44 25 N | 095 40 23 W |
| Sumner Cemetery | Cemetery | 163 | Lamar | 33 46 20 N | 095 39 40 W |
| Sumpter (historical) | Populated Place | 87 | Trinity | 31 02 12 N | 095 03 14 W |
| Sumpter Cemetery | Cemetery | 85 | Trinity | 31 02 13 N | 095 03 13 W |
| Sun Bowl Stadium | Park | 1194 | El Paso | 31 46 27 N | 106 30 21 W |
| Sun Bowl Stadium- University of Texas El Paso | Park | 1193 | El Paso | 31 46 24 N | 106 30 31 W |
| Sun Country Estates Colonia | Populated Place | 24 | Hidalgo | 26 11 11 N | 098 00 23 W |
| Sun Country Estates Colonia | Populated Place | 26 | San Patricio | 28 00 59 N | 097 37 06 W |
| Sun Grove Church | Church | 113 | Bowie | 33 33 36 N | 094 38 58 W |
| Sun Grove Park Colonia | Populated Place | 29 | Hidalgo | 26 10 35 N | 098 05 18 W |
| Sun Oil Company Canal | Canal | 1 | Galveston | 29 30 60 N | 094 33 60 W |
| Sun Oil Company Canal | Canal | 0 | Harris | 29 30 44 N | 094 33 48 W |
| Sun Oil Field | Oilfield | 113 | Starr | 26 39 26 N | 098 29 45 W |
| Sun Point | Cape | 134 | Rains | 32 51 58 N | 095 55 51 W |
| Sun Valley | Populated Place | 163 | Lamar | 33 39 52 N | 095 25 42 W |
| Sun Valley Baptist Church | Church | 1197 | El Paso | 31 53 40 N | 106 24 24 W |
| Sun Valley Church | Church | 180 | Tarrant | 32 40 54 N | 097 14 22 W |
| Sun Valley Colonia | Populated Place | 40 | Hidalgo | 26 12 37 N | 098 16 17 W |
| Sun Valley Elementary School | School | 186 | Bexar | 29 18 20 N | 098 40 15 W |
| Sun Valley Estates Colonia | Populated Place | 55 | Hidalgo | 26 19 38 N | 098 20 25 W |
| Sun Valley Estates Number 1 Colonia | Populated Place | 31 | Hidalgo | 26 11 00 N | 098 08 14 W |
| Sun Valley Oil Field | Oilfield | 723 | Pecos | 31 07 05 N | 102 30 45 W |
| Sun Valley Park | Park | 160 | Dallas | 32 41 50 N | 096 49 17 W |
| Sun Windmill | Locale | 900 | Winkler | 31 46 22 N | 102 49 40 W |
| Sun Windmill | Locale | 830 | Winkler | 31 40 00 N | 103 06 27 W |
| Sunbeam Baptist Church | Church | 17 | Harris | 29 49 30 N | 095 18 44 W |
| Suncreek United Methodist Church | Church | 201 | Collin | 33 06 01 N | 096 41 47 W |
| Sunday Creek | Stream | | Randall | 34 57 29 N | 101 40 12 W |
| Sunday Flats | Flat | 883 | Randall | 34 57 28 N | 101 40 55 W |
| Sunday Morning Windmill | Locale | 586 | Motley | 34 00 51 N | 100 31 41 W |
| Sundbeck Ranch Airport | Airport | 161 | Lee | 30 22 56 N | 097 17 02 W |
| Sundeen Junior High School | School | 6 | Nueces | 27 42 07 N | 097 21 44 W |
| Sundown | Populated Place | 1079 | Hockley | 33 27 22 N | 102 29 22 W |
| Sundown Bay | Bay | 4 | Aransas | 28 10 41 N | 096 51 49 W |
| Sundown Elementary School | School | 38 | Harris | 29 48 03 N | 095 43 38 W |
| Sundown Lane Elementary School | School | 1114 | Randall | 35 06 07 N | 101 53 26 W |
| Sundowner Lake | Reservoir | 115 | Wood | 32 43 36 N | 095 23 07 W |
| Sundowner Lake Dam | Dam | 115 | Wood | 32 43 36 N | 095 23 07 W |
| Sunflower Church | Church | 68 | Jasper | 30 57 25 N | 094 04 40 W |
| Sunflower Church | Church | 77 | Polk | 30 38 10 N | 094 42 44 W |
| Sunflower Creek | Stream | | Wilbarger | 33 55 35 N | 098 58 44 W |
| Sung Kwang Presbyterian Church | Church | 152 | Dallas | 32 56 18 N | 096 53 11 W |
| Sunglo Fellowship Church | Church | 19 | Hidalgo | 26 09 11 N | 097 54 48 W |
| Sunhaven Farms Colonia | Populated Place | 1115 | El Paso | 31 38 17 N | 106 15 31 W |
| Suniland | Locale | 59 | Live Oak | 28 35 16 N | 098 13 08 W |
| Suniland Oil Field | Oilfield | 917 | Lynn | 33 19 21 N | 101 35 09 W |
| Sunken Gardens | Park | 558 | Tom Green | 31 27 17 N | 100 26 34 W |
| Sunkist Country Estates Colonia | Populated Place | 15 | San Patricio | 28 00 30 N | 097 33 01 W |
| Sunland Park Shopping Center | Locale | 1158 | El Paso | 31 48 53 N | 106 32 59 W |
| Sunlight Baptist Church | Church | 18 | Harris | 29 50 26 N | 095 18 24 W |
| Sunlight Baptist Church | Church | 6 | Jefferson | 30 04 45 N | 094 06 33 W |
| Sunlight Church | Church | 8 | Chambers | 29 51 32 N | 094 38 33 W |
| Sunlight Church | Church | 2 | Galveston | 29 17 45 N | 094 49 21 W |
| Sunny Glen | Valley | | Brewster | 30 22 46 N | 103 45 05 W |
| Sunny Glen Tank | Reservoir | 1518 | Presidio | 30 20 23 N | 103 48 46 W |
| Sunny Glen Windmill | Locale | 1489 | Brewster | 30 21 28 N | 103 47 48 W |
| Sunny Glenn Home | Building | 12 | Cameron | 26 08 44 N | 097 40 04 W |
| Sunny Grove Church | Church | 81 | Harrison | 32 22 20 N | 094 18 46 W |
| Sunny Haven Estates Colonia | Populated Place | 37 | Hidalgo | 26 12 30 N | 098 22 42 W |
| Sunny Point Cemetery | Cemetery | 174 | Hopkins | 33 05 56 N | 095 51 34 W |
| Sunny Side | Populated Place | 15 | Harris | 29 39 51 N | 095 22 05 W |
| Sunny Side | Populated Place | 44 | Waller | 29 53 19 N | 096 04 09 W |
| Sunny Side Elementary School | School | 15 | Harris | 29 40 10 N | 095 22 21 W |
| Sunny Side Missionary Baptist Church | Church | 14 | Harris | 29 40 31 N | 095 22 01 W |
| Sunny Side Park | Park | 15 | Harris | 29 40 08 N | 095 22 22 W |
| Sunny Side PO | Populated Place | 49 | Waller | 29 54 34 N | 096 03 58 W |
| Sunny Side School | School | 15 | Harris | 29 40 12 N | 095 22 17 W |
| Sunny Slope Baptist Church | Church | 220 | Bexar | 29 24 14 N | 098 26 57 W |
| Sunny Slope Church | Church | 96 | Bowie | 33 24 55 N | 094 05 01 W |
| Sunnydell Church | Church | 70 | Tyler | 30 56 38 N | 094 27 53 W |
| Sunnyhill Church | Church | 128 | Harrison | 32 36 14 N | 094 27 27 W |
| Sunnylane | Populated Place | 365 | Burnet | 30 55 48 N | 098 08 11 W |
| Sunnylane | Populated Place | 358 | Burnet | 30 55 43 N | 098 08 10 W |
| Sunnyside | Populated Place | 1138 | Castro | 34 20 52 N | 102 18 13 W |
| Sunnyside | Populated Place | 5 | Jefferson | 30 04 14 N | 094 08 50 W |
| Sunnyside | Populated Place | 135 | Wilson | 29 08 24 N | 098 03 09 W |
| Sunnyside Baptist Church | Church | 209 | Grayson | 33 43 52 N | 096 32 39 W |
| Sunnyside Baptist Church | Church | 6 | Jefferson | 30 04 09 N | 094 08 51 W |
| Sunnyside Cemetery | Cemetery | 204 | Fannin | 33 36 26 N | 096 21 45 W |
| Sunnyside Cemetery | Cemetery | 107 | Robertson | 30 59 30 N | 096 40 22 W |
| Sunnyside Church | Church | 107 | Lee | 30 14 04 N | 096 45 29 W |
| Sunnyvale | Populated Place | 148 | Dallas | 32 47 47 N | 096 33 39 W |
| Sunnyvale Elementary School | School | 147 | Dallas | 32 47 40 N | 096 33 33 W |
| Sunnyvale Public Library | Building | 92 | Dallas | 30 04 20 N | 096 35 37 W |
| Sunray | Populated Place | 1069 | Moore | 36 01 00 N | 101 49 29 W |
| Sunray Airport | Airport | 1067 | Moore | 36 01 45 N | 101 49 45 W |
| Sunray High School | School | 1068 | Moore | 36 00 52 N | 101 49 13 W |
| Sunrise | Populated Place | 108 | Falls | 31 16 21 N | 096 52 23 W |
| Sunrise | Populated Place | 133 | San Augustine | 31 30 42 N | 094 04 32 W |
| Sunrise Acres | Populated Place | 1219 | El Paso | 31 51 38 N | 106 26 43 W |
| Sunrise Acres Colonia | Populated Place | 15 | San Patricio | 27 55 49 N | 097 34 13 W |
| Sunrise Baptist Church | Church | 171 | Dallas | 32 41 54 N | 096 48 47 W |
| Sunrise Baptist Church | Church | 1207 | El Paso | 31 51 09 N | 106 26 32 W |
| Sunrise Baptist Church | Church | 15 | Harris | 29 47 13 N | 095 20 04 W |
| Sunrise Baptist Church | Church | 496 | Kerr | 30 02 30 N | 099 08 06 W |
| Sunrise Beach Airport | Airport | 258 | Llano | 30 35 56 N | 098 24 32 W |
| Sunrise Beach Baptist Church | Church | 257 | Llano | 30 36 13 N | 098 24 57 W |
| Sunrise Beach Federated Church | Church | 256 | Llano | 30 36 13 N | 098 24 59 W |