Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| North Palm Gardens School | School | 20 | Hidalgo | 26 11 58 N | 097 56 37 W |
| Northern Acres Colonia | Populated Place | 20 | Hidalgo | 26 11 57 N | 097 59 39 W |
| Northland Missionary Baptist Church | Church | 20 | Harris | 29 52 46 N | 095 18 24 W |
| Northline Shopping Center | Locale | 20 | Harris | 29 49 57 N | 095 22 46 W |
| Northside Church of God | Church | 20 | Harris | 29 50 10 N | 095 20 43 W |
| Northwood Junior High School | School | 20 | Harris | 29 52 13 N | 095 17 58 W |
| Northwood Middle School | School | 20 | Harris | 29 52 13 N | 095 18 04 W |
| Nueces County | Civil | 20 | Nueces | 27 44 01 N | 097 38 01 W |
| Number One Windmill | Locale | 20 | Brooks | 27 01 03 N | 098 01 23 W |
| O and J Colonia | Populated Place | 20 | Hidalgo | 26 06 15 N | 097 57 23 W |
| Oak Dale Cemetery | Cemetery | 20 | Liberty | 30 05 17 N | 094 38 20 W |
| Oak Forest Parkway | Park | 20 | Harris | 29 49 31 N | 095 27 18 W |
| Oak Park Cemetery | Cemetery | 20 | Harris | 29 50 13 N | 095 19 30 W |
| Oak Village Middle School | School | 20 | Harris | 29 53 59 N | 095 17 33 W |
| Oakwide School | School | 20 | Harris | 29 53 08 N | 095 20 25 W |
| Oakwood United Methodist Church | Church | 20 | Harris | 29 49 23 N | 095 22 05 W |
| Old River Lake | Lake | 20 | Fort Bend | 29 35 36 N | 095 44 28 W |
| Olivarez | Populated Place | 20 | Hidalgo | 26 13 42 N | 097 59 32 W |
| Olivarez Number 17 Colonia | Populated Place | 20 | Hidalgo | 26 14 00 N | 097 59 14 W |
| Olivarez Number 3 Colonia | Populated Place | 20 | Hidalgo | 26 12 33 N | 097 59 07 W |
| Olivarez Number 9 Colonia | Populated Place | 20 | Hidalgo | 26 15 33 N | 097 58 42 W |
| Omega Missionary Baptist Church | Church | 20 | Harris | 29 50 19 N | 095 19 48 W |
| Optimist Ponds | Lake | 20 | Victoria | 28 49 11 N | 097 01 25 W |
| Orange Grove Elementary School | School | 20 | Harris | 29 53 28 N | 095 19 29 W |
| Orange Grove School | School | 20 | Harris | 29 53 25 N | 095 19 34 W |
| Oriental Textile Mill | Locale | 20 | Harris | 29 48 23 N | 095 24 31 W |
| Oriente Colonia | Populated Place | 20 | Hidalgo | 26 05 39 N | 097 56 25 W |
| Oscar Lindsay House | Building | 20 | Harris | 29 49 05 N | 095 23 36 W |
| Our Lady of Mercy Cemetery | Cemetery | 20 | Hidalgo | 26 09 20 N | 097 55 31 W |
| Our Lady of Mercy School | School | 20 | Hidalgo | 26 08 53 N | 097 55 13 W |
| Paterson Park | Park | 20 | Nueces | 27 50 24 N | 097 34 03 W |
| Pearce Industries Heliport | Airport | 20 | Harris | 29 39 01 N | 095 27 38 W |
| Pillar Rock Missionary Baptist Church | Church | 20 | Harris | 29 49 43 N | 095 21 12 W |
| Pledger | Populated Place | 20 | Matagorda | 29 10 57 N | 095 54 31 W |
| Prairie Aire Field | Airport | 20 | Fort Bend | 29 21 20 N | 095 39 50 W |
| Progreso Bend | Bend | 20 | Hidalgo | 26 03 38 N | 097 56 53 W |
| Progreso Elementary School | School | 20 | Hidalgo | 26 05 53 N | 097 57 25 W |
| Progreso High School | School | 20 | Hidalgo | 26 05 58 N | 097 57 26 W |
| Providence Presbyterian Church | Church | 20 | Fort Bend | 29 34 24 N | 095 35 38 W |
| Puesta del Sol Colonia | Populated Place | 20 | Hidalgo | 26 13 35 N | 097 58 13 W |
| Quiteria Hill | Summit | 20 | Brooks | 26 53 02 N | 098 00 55 W |
| Rabbs Ridge | Ridge | 20 | Fort Bend | 29 27 18 N | 095 35 09 W |
| Rancho del Carmine | Locale | 20 | Hidalgo | 26 33 45 N | 098 02 46 W |
| Refugio Oil Field | Oilfield | 20 | Refugio | 28 19 23 N | 097 17 38 W |
| Resurrection Lutheran Church | Church | 20 | Fort Bend | 29 35 31 N | 095 27 48 W |
| Resurrection Lutheran Church | Church | 20 | Nueces | 27 49 43 N | 097 33 28 W |
| Rice Addition Colonia | Populated Place | 20 | Hidalgo | 26 05 43 N | 097 57 12 W |
| Riceville Cemetery | Cemetery | 20 | Harris | 29 40 14 N | 095 32 15 W |
| Ridgegate Elementary School | School | 20 | Fort Bend | 29 35 49 N | 095 28 34 W |
| Ridgemont Elementary School | School | 20 | Fort Bend | 29 35 17 N | 095 27 36 W |
| Riverside Park Trail | Trail | 20 | Victoria | 28 48 60 N | 097 01 10 W |
| Riverwood Middle School | School | 20 | Harris | 30 02 59 N | 095 08 46 W |
| Robert E Lee High School | School | 20 | Harris | 29 43 47 N | 095 29 60 W |
| Rodeo Windmill | Locale | 20 | Kenedy | 27 02 08 N | 097 59 00 W |
| Roselle-Smith House | Building | 20 | Victoria | 28 48 04 N | 097 00 37 W |
| Rosewood General Hospital | Hospital | 20 | Harris | 29 44 18 N | 095 31 21 W |
| Saint Davis Missionary Baptist Church | Church | 20 | Harris | 29 50 52 N | 095 20 58 W |
| Saint John Church | Church | 20 | Fort Bend | 29 33 09 N | 095 33 48 W |
| Saint Marys Seminary | School | 20 | Harris | 29 46 39 N | 095 28 38 W |
| Saint Paul Estates Colonia | Populated Place | 20 | San Patricio | 28 04 49 N | 097 34 02 W |
| Salem Baptist Church | Church | 20 | Harris | 29 48 59 N | 095 23 45 W |
| Salinas-Hinojosa Colonia | Populated Place | 20 | Hidalgo | 26 17 57 N | 097 59 11 W |
| Sam Houston School | School | 20 | Jackson | 28 58 18 N | 096 38 40 W |
| Sample Cemetery | Cemetery | 20 | Victoria | 28 33 48 N | 097 08 06 W |
| Sandy Creek Oil Field | Oilfield | 20 | Jackson | 29 02 24 N | 096 32 49 W |
| Santa Maria | Populated Place | 20 | Cameron | 26 04 43 N | 097 50 58 W |
| Santa Maria High School | School | 20 | Cameron | 26 04 35 N | 097 50 43 W |
| Scruggs Methodist Church | Church | 20 | Jackson | 28 58 52 N | 096 38 34 W |
| Seaberg Ranch Airport | Airport | 20 | Liberty | 30 00 46 N | 094 55 27 W |
| Seaberg Reservoir Number 1 | Reservoir | 20 | Harris | 30 01 37 N | 095 03 25 W |
| Seaberg Reservoir Number 1 Levee | Dam | 20 | Harris | 30 01 37 N | 095 03 25 W |
| Select Specialty Hospital - Houston Heights | Hospital | 20 | Harris | 29 48 13 N | 095 24 15 W |
| Shady Oaks Church | Church | 20 | Harris | 29 53 31 N | 095 16 55 W |
| Sharps Lake | Lake | 20 | Refugio | 28 28 01 N | 097 10 31 W |
| Sharpstown Baptist Church | Church | 20 | Harris | 29 42 16 N | 095 30 25 W |
| Sharpstown General Hospital | Hospital | 20 | Harris | 29 42 21 N | 095 30 06 W |
| Sharpstown High School Baseball Field | Park | 20 | Harris | 29 41 11 N | 095 30 56 W |
| Sharpstown High School SPARK Park Trail | Trail | 20 | Harris | 29 41 06 N | 095 30 49 W |
| Sheeks | Populated Place | 20 | Liberty | 29 58 53 N | 094 58 31 W |
| Siesta Village Number 4 Colonia | Populated Place | 20 | Hidalgo | 26 07 53 N | 097 57 44 W |
| Smada | Populated Place | 20 | Fort Bend | 29 34 53 N | 095 34 49 W |
| Smithers Lake | Lake | 20 | Fort Bend | 29 29 13 N | 095 38 52 W |
| Smyrna Baptist Church | Church | 20 | Harris | 29 50 26 N | 095 20 12 W |
| South School | School | 20 | Hidalgo | 26 08 35 N | 097 54 40 W |
| South Texas Factory Stores | Locale | 20 | Hidalgo | 26 09 24 N | 097 56 59 W |
| South Texas Vo-Tech Institute | School | 20 | Hidalgo | 26 10 15 N | 097 57 54 W |
| Stark Cemetery | Cemetery | 20 | Newton | 30 42 60 N | 093 37 06 W |
| Strain | Populated Place | 20 | Hardin | 30 07 60 N | 094 32 56 W |
| Studewood Church of Christ | Church | 20 | Harris | 29 48 53 N | 095 23 45 W |
| Sugar Grove Elementary School | School | 20 | Harris | 29 41 14 N | 095 30 50 W |
| Sugar Grove Elementary SPARK Park Trail | Trail | 20 | Harris | 29 41 14 N | 095 30 50 W |
| Sutton Elementary School | School | 20 | Harris | 29 41 55 N | 095 30 04 W |
| Sutton Elementary SPARK Park Trail | Trail | 20 | Harris | 29 41 55 N | 095 30 04 W |
| T C Jester Park | Park | 20 | Harris | 29 49 30 N | 095 27 19 W |
| Tanglewood Park | Park | 20 | Harris | 29 45 43 N | 095 28 49 W |
| Taylor Camp | Locale | 20 | Hardin | 30 07 01 N | 094 33 08 W |
| Taylor Elementary School | School | 20 | Hidalgo | 26 09 46 N | 097 54 54 W |
| Taylor School | School | 20 | Hidalgo | 26 09 36 N | 097 54 56 W |
| Ten Acres Colonia | Populated Place | 20 | Hidalgo | 26 18 12 N | 097 59 21 W |
| Terrell Cemetery | Cemetery | 20 | Jackson | 29 03 27 N | 096 45 12 W |
| Texana Presbyterian Church | Church | 20 | Jackson | 28 57 54 N | 096 39 21 W |
| Texas and New Orleans Railroad Bridge | Bridge | 20 | Wharton | 29 18 28 N | 096 06 24 W |
| Texas College of Arts and Industries | School | 20 | Hidalgo | 26 09 56 N | 097 57 29 W |
| The Church of Jesus Christ of Latter Day Saints | Church | 20 | Harris | 29 40 57 N | 095 31 05 W |
| Thompsons | Populated Place | 20 | Fort Bend | 29 29 52 N | 095 35 06 W |
| Thurgood Marshall Elementary School | School | 20 | Harris | 29 53 06 N | 095 17 17 W |
| Timbers Elementary School | School | 20 | Harris | 29 59 30 N | 095 10 20 W |
| Tinsley Elementary SPARK Park Trail | Trail | 20 | Harris | 29 39 37 N | 095 30 05 W |
| Tony Colonia | Populated Place | 20 | Hidalgo | 26 13 49 N | 097 59 39 W |
| Trammels | Populated Place | 20 | Fort Bend | 29 32 05 N | 095 32 15 W |