City comparison
Houston, TX is about 150 miles (225 km) from Round Rock, TX in a straight line. By road, the drive is roughly 175 miles, or about 3 h behind the wheel at highway speeds.
Driving distance is a rough estimate (great-circle × 1.25); driving time assumes a 60 mph blended average. Real trips run 10–20% longer with stops.
A direct flight from Houston, TX to Round Rock, TX takes about 17 min, covering roughly 150 miles in a straight line. Connecting itineraries with a layover typically add 1–3 hours.
Block-to-block estimate at ~500 mph cruise, including taxi, climb, and descent — what an airline would publish, not pure airborne time.
Houston has a population of 2,296,253, vs 120,465 in Round Rock — about 19.1× larger by population. By land area, Houston covers about 640 sq mi vs 38 sq mi for Round Rock.
Population from US Census ACS. Land area from the Census Gazetteer (city proper, excluding inland water).
Cost indices by category, with the US city average (100) marked.
Index: 100 = US city average. Lower is more affordable.
Side-by-side costs, salaries, and sub-category indices.
| Metric | Houston | Round Rock | Difference |
|---|---|---|---|
| Median rent | $1,235/mo | $1,586/mo | 28.4% higher in Round Rock |
| Median home value | $235,000 | $337,500 | 43.6% higher in Round Rock |
| Median household income | $60,440 | $91,888 | 52.0% higher in Round Rock |
| Groceries index | 100.4 | 94.2 | 6.6% higher in Houston |
| Utilities index | 96.3 | 83.2 | 15.8% higher in Houston |
| Transportation index | 95.8 | 96.6 | 0.9% higher in Round Rock |
| Healthcare index | 95.2 | 96.1 | 1.0% higher in Round Rock |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Houston, you'd need $105,243 in Round Rock to maintain your standard of living.
Climate, safety, and demographics side by side.
Houston, TX is about 5% cheaper overall than Round Rock, TX, based on our cost-of-living index. Housing costs are roughly 16% higher in Round Rock than in Houston. If you earn $80,000 in Houston, you'd need about $84,194 in Round Rock to keep the same standard of living.