City comparison
Boulder, CO is about 600 miles (950 km) from Phoenix, AZ in a straight line. By road, the drive is roughly 750 miles, or about 12 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 Boulder, CO to Phoenix, AZ takes about 1 h 10 min, covering roughly 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.
Phoenix has a population of 1,609,456, vs 106,598 in Boulder — about 15.1× larger by population. By land area, Phoenix covers about 520 sq mi vs 27 sq mi for Boulder.
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 | Boulder | Phoenix | Difference |
|---|---|---|---|
| Median rent | $1,853/mo | $1,322/mo | 40.2% higher in Boulder |
| Median home value | $919,700 | $340,200 | 170.3% higher in Boulder |
| Median household income | $80,243 | $72,092 | 11.3% higher in Boulder |
| Groceries index | 96.8 | 95.8 | 1.0% higher in Boulder |
| Utilities index | 86.5 | 96.2 | 11.1% higher in Phoenix |
| Transportation index | 100.3 | 104.1 | 3.8% higher in Phoenix |
| Healthcare index | 100.2 | 104.0 | 3.8% higher in Phoenix |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Boulder, you'd need $88,987 in Phoenix to maintain your standard of living.
Climate, safety, and demographics side by side.
Phoenix, AZ is about 11% cheaper overall than Boulder, CO, based on our cost-of-living index. Housing costs are roughly 30% higher in Boulder than in Phoenix. If you earn $80,000 in Boulder, you'd need about $71,190 in Phoenix to keep the same standard of living.