Outdoor Lighting in Williamson County, TX (2026)
1 county-level rule, plus city-specific rules for 2 cities in Williamson County, Texas.
Verified from official government sources
Note: These county rules apply to unincorporated areas of Williamson County. If you live within an incorporated city, that city's own rules apply: see the city list below.
Dark Sky Rules
Williamson County has no dark-sky lighting ordinance for private property. Texas has no general outdoor-lighting statute; Health and Safety Code Chapter 425 covers only state-funded fixtures and areas near observatories or military bases, none of which sit in the county.
Williamson County Dark Sky & Outdoor Lighting Rules
Few RestrictionsTex. Health & Safety Code §425.002
An outdoor lighting fixture may be installed, replaced, maintained, or operated using state funds only if:
Outdoor Lighting by City in Williamson County
2 cities in Williamson County have their own outdoor lighting rules. Each link goes to that city's dedicated page with code citations.
All Williamson County ordinances
See every category we cover for Williamson County: parking, noise, fences, fires, animals, pools, and more.
Williamson County Ordinance Hub →