City comparison
Decatur, IL is about 1,300 miles (2,200 km) from Phoenix, AZ in a straight line. By road, the drive is roughly 1,700 miles, or about 28 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 Decatur, IL to Phoenix, AZ takes about 2 h 42 min, covering roughly 1,300 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.
Decatur, IL is on Central Time and Phoenix, AZ is on Mountain Time — a 1-hour difference. When it's noon in Decatur, it's 11 a.m. in Phoenix, which puts Decatur 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.
Phoenix has a population of 1,609,456, vs 70,975 in Decatur — about 22.7× larger by population. By land area, Phoenix covers about 520 sq mi vs 44 sq mi for Decatur.
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 | Decatur | Phoenix | Difference |
|---|---|---|---|
| Median rent | $770/mo | $1,322/mo | 71.7% higher in Phoenix |
| Median home value | $96,800 | $340,200 | 251.4% higher in Phoenix |
| Median household income | $49,039 | $72,092 | 47.0% higher in Phoenix |
| Groceries index | 93.9 | 95.8 | 2.1% higher in Phoenix |
| Utilities index | 91.2 | 96.2 | 5.5% higher in Phoenix |
| Transportation index | 99.3 | 104.1 | 4.8% higher in Phoenix |
| Healthcare index | 99.5 | 104.0 | 4.5% 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 Decatur, you'd need $136,364 in Phoenix to maintain your standard of living.
Climate, safety, and demographics side by side.
Decatur, IL is about 26.7% cheaper overall than Phoenix, AZ, based on our cost-of-living index. Housing costs are roughly 112% higher in Phoenix than in Decatur. If you earn $80,000 in Decatur, you'd need about $109,091 in Phoenix to keep the same standard of living.