City comparison
Philadelphia, PA is about 1,600 miles (2,500 km) from Thornton, CO 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 Philadelphia, PA to Thornton, CO 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.
Philadelphia, PA is on Eastern Time and Thornton, CO is on Mountain Time — a 2-hour difference. When it's noon in Philadelphia, it's 10 a.m. in Thornton, which puts Philadelphia 2 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.
Philadelphia has a population of 1,593,208, vs 141,799 in Thornton — about 11.2× larger by population. By land area, Philadelphia covers about 135 sq mi vs 37 sq mi for Thornton.
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 | Philadelphia | Thornton | Difference |
|---|---|---|---|
| Median rent | $1,250/mo | $1,758/mo | 40.6% higher in Thornton |
| Median home value | $215,500 | $445,200 | 106.6% higher in Thornton |
| Median household income | $57,537 | $95,064 | 65.2% higher in Thornton |
| Groceries index | 97.0 | 101.2 | 4.3% higher in Thornton |
| Utilities index | 112.3 | 91.2 | 23.2% higher in Philadelphia |
| Transportation index | 101.7 | 99.9 | 1.8% higher in Philadelphia |
| Healthcare index | 102.7 | 99.9 | 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 Philadelphia, you'd need $111,914 in Thornton to maintain your standard of living.
Climate, safety, and demographics side by side.
Philadelphia, PA is about 10.6% cheaper overall than Thornton, CO, based on our cost-of-living index. Housing costs are roughly 31% higher in Thornton than in Philadelphia. If you earn $80,000 in Philadelphia, you'd need about $89,531 in Thornton to keep the same standard of living.