City comparison
Longmont, 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 Longmont, 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.
Longmont, CO is on Mountain Time and Philadelphia, PA is on Eastern Time — a 2-hour difference. When it's noon in Longmont, it's 2 p.m. in Philadelphia, which puts Longmont 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 98,282 in Longmont — about 16.2× larger by population. By land area, Philadelphia covers about 135 sq mi vs 29 sq mi for Longmont.
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 | Longmont | Philadelphia | Difference |
|---|---|---|---|
| Median rent | $1,689/mo | $1,250/mo | 35.1% higher in Longmont |
| Median home value | $488,100 | $215,500 | 126.5% higher in Longmont |
| Median household income | $89,720 | $57,537 | 55.9% higher in Longmont |
| Groceries index | 96.8 | 97.0 | ≈ equal (Philadelphia slightly higher) |
| Utilities index | 86.5 | 112.3 | 29.8% higher in Philadelphia |
| Transportation index | 100.3 | 101.7 | 1.5% higher in Philadelphia |
| Healthcare index | 100.2 | 102.7 | 2.5% 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 Longmont, you'd need $87,421 in Philadelphia to maintain your standard of living.
Climate, safety, and demographics side by side.
Philadelphia, PA is about 12.6% cheaper overall than Longmont, CO, based on our cost-of-living index. Housing costs are roughly 38% higher in Longmont than in Philadelphia. If you earn $80,000 in Longmont, you'd need about $69,937 in Philadelphia to keep the same standard of living.