City comparison
Castle Rock, CO is about 1,600 miles (2,500 km) from Philadelphia, PA in a straight line. By road, the drive is roughly 2,000 miles, or about 33 hours (about 3 days at 10 h/day) 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 Castle Rock, CO to Philadelphia, PA takes about 3 h 9 min, covering roughly 1,600 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.
Castle Rock, CO is on Mountain Time and Philadelphia, PA is on Eastern Time — a 2-hour difference. When it's noon in Castle Rock, it's 2 p.m. in Philadelphia, which puts Castle Rock 2 hours behind.
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.
Philadelphia has a population of 1,593,208, vs 74,065 in Castle Rock — about 21.5× larger by population. By land area, Philadelphia covers about 135 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 | Castle Rock | Philadelphia | Difference |
|---|---|---|---|
| Median rent | $1,810/mo | $1,250/mo | 44.8% higher in Castle Rock |
| Median home value | $577,500 | $215,500 | 168.0% higher in Castle Rock |
| Median household income | $135,985 | $57,537 | 136.3% higher in Castle Rock |
| Groceries index | 101.2 | 97.0 | 4.3% higher in Castle Rock |
| Utilities index | 91.2 | 112.3 | 23.2% higher in Philadelphia |
| Transportation index | 99.9 | 101.7 | 1.8% higher in Philadelphia |
| Healthcare index | 99.9 | 102.7 | 2.8% higher in Philadelphia |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Castle Rock, you'd need $89,242 in Philadelphia to maintain your standard of living.
Climate, safety, and demographics side by side.
Philadelphia, PA is about 10.8% cheaper overall than Castle Rock, CO, based on our cost-of-living index. Housing costs are roughly 31% higher in Castle Rock than in Philadelphia. If you earn $80,000 in Castle Rock, you'd need about $71,393 in Philadelphia to keep the same standard of living.