City profile
Round Rock, TX
Williamson County · Population 127,786
Round Rock is a city in Williamson County, TX with about 127,786 residents and a typical home value near $419,000. It is 19 miles from Austin, TX, which shapes its climate, healthcare access and amenities.
Climate
Climate type
Warm & sunny
Winter avg
50°F
Summer avg
86°F
Sunny days / yr
228
Home prices & cost of living
Median home price
$418,600
Typical monthly housing
$2,902
Cost of living (100 = U.S.)
103
Taxes
- Property tax
- 1.80%
- State income tax (top)
- None
- Social Security
- Not taxed
- Pensions
- Not taxed
- Sales tax (state + avg. local)
- 8.20%
FEMA natural hazard risk
Relatively Moderate · county score 90/100
Top hazards: Hail, Winter weather, Cold wave
Nearest major airport
23 mi to Austin Bergstrom International Airport (AUS)
Political lean (2024 county vote)
Competitive / purple · 48% Democratic / 50% Republican
Community
Population
127,786
Black population
11.3%
County
Williamson County
Detailed crime figures are available for our 201 hand-researched cities.
2025–2026 trends
2026 market trends
- ▸TX is gaining retirees — a sign of strong retiree services and community
- ▸Home insurance premiums are rising quickly here
- ▸Home prices are softening in 2026 — more room to negotiate
- ▸Climate/cost risks to check: extreme heat, hail
Highlights
- About 127,786 residents
- Typical home value about $419,000
- 19 miles from Austin, TX
Trade-offs
- Scores for this place are estimated from Census data and the nearest major city
Figures are estimates from public sources (see How we match). Verify before making decisions.