36 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Killeen | Bell County | 163,581 |
| Kyle | Hays County | 73,274 |
| Keller | Tarrant County | 46,717 |
| Katy | Fort Bend County | 28,972 |
| Kerrville | Kerr County | 25,324 |
| Kingsville | Kleberg County | 24,072 |
| Kilgore | Gregg County | 13,620 |
| Kennedale | Tarrant County | 11,078 |
| Kaufman | Kaufman County | 10,407 |
| Kirby | Bexar County | 7,967 |
| Kingsland | Llano County | 7,336 |
| Krum | Denton County | 7,184 |
| Keene | Johnson County | 7,145 |
| Kermit | Winkler County | 5,758 |
| Kenedy | Karnes County | 3,345 |
| Karnes City | Karnes County | 3,112 |
| Kemah | Galveston County | 3,062 |
| Kountze | Hardin County | 2,242 |
| Krugerville | Denton County | 2,071 |
| Kirbyville | Jasper County | 2,028 |
| Kerens | Navarro County | 1,488 |
| Kemp | Kaufman County | 1,484 |
| Kempner | Lampasas County | 1,347 |
| Knippa | Uvalde County | 1,146 |
| Knox City | Knox County | 1,036 |
| Kenefick | Chambers County | 840 |
| Knollwood | Grayson County | 831 |
| K-Bar Ranch | Duval County | 674 |
| Kress | Swisher County | 596 |
| Kosse | Limestone County | 465 |
| Kurten | Brazos County | 404 |
| Kendleton | Fort Bend County | 356 |
| Kennard | Houston County | 286 |
| Kingsbury | Guadalupe County | 137 |
| Kopperl | Bosque County | 129 |
| Kirvin | Freestone County | 112 |