| City | County | 2026 Pop. ↓ |
|---|---|---|
| Irving | Dallas County | 257,513 |
| Iowa Colony | Brazoria County | 22,650 |
| Ingleside | San Patricio County | 10,214 |
| Iowa Park | Wichita County | 6,538 |
| Indian Hills | Hidalgo County | 2,822 |
| Inez | Victoria County | 2,322 |
| Italy | Ellis County | 2,182 |
| Idalou | Lubbock County | 2,083 |
| Itasca | Hill County | 2,049 |
| Ingram | Kerr County | 1,858 |
| Ivanhoe | Fannin County | 1,388 |
| Indian Springs | Polk County | 1,059 |
| Iraan | Pecos County | 985 |
| Indian Lake | Cameron County | 902 |
| Ingleside on the Bay | San Patricio County | 602 |
| Iola | Grimes County | 362 |
| Iredell | Bosque County | 316 |
| Industry | Austin County | 304 |
| Imperial | Pecos County | 276 |
| Iglesia Antigua | Cameron County | 63 |
| Impact | Taylor County | 18 |