Texas's 15th Senate district
District 15 of the Texas Senate is a senatorial district that currently serves a portion of Harris county in the U.S. state of Texas.
The current senator from District 15 is Molly Cook. Cook was elected in a special election to succeed John Whitmire, who resigned on December 31, 2023, to take office as the mayor of Houston.
Top 4 biggest cities in district
District 15 has a population of 793,108 with 574,255 that is at voting age from the 2010 census.| Name | County | Pop. | |
| 1 | Houston | Harris | 392,976 |
| 2 | Baytown | Harris | 29,778 |
| 3 | Humble | Harris | 14,810 |
| 4 | Jacinto City | Harris | 2,757 |