City comparison
Decatur, IL is about 125 miles (225 km) from Tinley Park, IL in a straight line. By road, the drive is roughly 175 miles, or about 2 h 45 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 Decatur, IL to Tinley Park, IL takes about 16 min, covering roughly 125 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 has a population of 70,975, vs 55,571 in Tinley Park — about 1.3× larger by population. By land area, Decatur covers about 44 sq mi vs 16 sq mi for Tinley Park.
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 | Tinley Park | Difference |
|---|---|---|---|
| Median rent | $770/mo | $1,399/mo | 81.7% higher in Tinley Park |
| Median home value | $96,800 | $278,300 | 187.5% higher in Tinley Park |
| Median household income | $49,039 | $99,628 | 103.2% higher in Tinley Park |
| Groceries index | 93.9 | 106.3 | 13.2% higher in Tinley Park |
| Utilities index | 91.2 | 84.3 | 8.1% higher in Decatur |
| Transportation index | 99.3 | 100.2 | 0.8% higher in Tinley Park |
| Healthcare index | 99.5 | 100.4 | 0.8% higher in Tinley Park |
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 $131,504 in Tinley Park to maintain your standard of living.
Climate, safety, and demographics side by side.
Decatur, IL is about 24% cheaper overall than Tinley Park, IL, based on our cost-of-living index. Housing costs are roughly 98% higher in Tinley Park than in Decatur. If you earn $80,000 in Decatur, you'd need about $105,203 in Tinley Park to keep the same standard of living.