City comparison
Champaign, IL is about 40 miles (60 km) from Decatur, IL in a straight line. By road, the drive is roughly 50 miles, or about 49 min 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 Champaign, IL to Decatur, IL takes about 5 min, covering roughly 40 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.
Champaign has a population of 88,628, vs 70,975 in Decatur — about 1.2× larger by population. By land area, Decatur covers about 44 sq mi vs 23 sq mi for Champaign.
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 | Champaign | Decatur | Difference |
|---|---|---|---|
| Median rent | $1,056/mo | $770/mo | 37.1% higher in Champaign |
| Median home value | $191,200 | $96,800 | 97.5% higher in Champaign |
| Median household income | $58,273 | $49,039 | 18.8% higher in Champaign |
| Groceries index | 93.9 | 93.9 | ≈ equal |
| Utilities index | 90.6 | 91.2 | 0.6% higher in Decatur |
| Transportation index | 99.3 | 99.3 | ≈ equal |
| Healthcare index | 99.5 | 99.5 | ≈ equal |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Champaign, you'd need $92,197 in Decatur to maintain your standard of living.
Climate, safety, and demographics side by side.
Decatur, IL is about 7.8% cheaper overall than Champaign, IL, based on our cost-of-living index. Housing costs are roughly 28% higher in Champaign than in Decatur. If you earn $80,000 in Champaign, you'd need about $73,758 in Decatur to keep the same standard of living.