List of all settlements:
- Austin, Williamson
- Bartlett, Williamson
- Brentwood, Williamson
- Brushy Creek, Williamson
- Bush, Williamson
- Cambria, Williamson
- Carterville, Williamson
- Cedar Park, Williamson
- Colp, Williamson
- Crab Orchard, Williamson
- Crainville, Williamson
- Creal Springs, Williamson
- Energy, Williamson
- Fairview, Williamson
- Florence, Williamson
- Franklin, Williamson
- Freeman Spur, Williamson
- Georgetown, Williamson
- Granger, Williamson
- Herrin, Williamson
- Hurst, Williamson
- Hutto, Williamson
- Jarrell, Williamson
- Johnston City, Williamson
- Jollyville, Williamson
- Leander, Williamson
- Liberty Hill, Williamson
- Marion, Williamson
- Nolensville, Williamson
- Pflugerville, Williamson
- Pittsburg, Williamson
- Round Rock, Williamson
- Serenada, Williamson