City comparison
Austin, TX is about 750 miles (1,200 km) from Castle Rock, CO in a straight line. By road, the drive is roughly 950 miles, or about 16 hours 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 Austin, TX to Castle Rock, CO takes about 1 h 29 min, covering roughly 750 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.
Austin, TX is on Central Time and Castle Rock, CO is on Mountain Time — a 1-hour difference. When it's noon in Austin, it's 11 a.m. in Castle Rock, which puts Austin 1 hours ahead.
Standard-time offsets. Daylight saving applies in both cities for most of the year (exceptions: Hawaii and most of Arizona), and the gap between the two stays the same.
Austin has a population of 958,202, vs 74,065 in Castle Rock — about 12.9× larger by population. By land area, Austin covers about 325 sq mi vs 35 sq mi for Castle 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 | Austin | Castle Rock | Difference |
|---|---|---|---|
| Median rent | $1,549/mo | $1,810/mo | 16.8% higher in Castle Rock |
| Median home value | $461,500 | $577,500 | 25.1% higher in Castle Rock |
| Median household income | $86,556 | $135,985 | 57.1% higher in Castle Rock |
| Groceries index | 94.2 | 101.2 | 7.5% higher in Castle Rock |
| Utilities index | 83.2 | 91.2 | 9.6% higher in Castle Rock |
| Transportation index | 96.6 | 99.9 | 3.4% higher in Castle Rock |
| Healthcare index | 96.1 | 99.9 | 3.9% higher in Castle 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 Austin, you'd need $113,324 in Castle Rock to maintain your standard of living.
Climate, safety, and demographics side by side.
Austin, TX is about 11.8% cheaper overall than Castle Rock, CO, based on our cost-of-living index. Housing costs are roughly 22% higher in Castle Rock than in Austin. If you earn $80,000 in Austin, you'd need about $90,660 in Castle Rock to keep the same standard of living.