City comparison
Decatur, IL is about 550 miles (850 km) from Monroe, LA in a straight line. By road, the drive is roughly 650 miles, or about 11 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 Decatur, IL to Monroe, LA takes about 1 h 4 min, covering roughly 550 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 47,631 in Monroe — about 1.5× larger by population. By land area, Decatur covers about 44 sq mi vs 30 sq mi for Monroe.
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 | Monroe | Difference |
|---|---|---|---|
| Median rent | $770/mo | $790/mo | 2.6% higher in Monroe |
| Median home value | $96,800 | $158,200 | 63.4% higher in Monroe |
| Median household income | $49,039 | $36,550 | 34.2% higher in Decatur |
| Groceries index | 93.9 | 94.1 | ≈ equal (Monroe slightly higher) |
| Utilities index | 91.2 | 74.3 | 22.8% higher in Decatur |
| Transportation index | 99.3 | 96.1 | 3.3% higher in Decatur |
| Healthcare index | 99.5 | 95.6 | 4.1% higher in Decatur |
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 $90,369 in Monroe to maintain your standard of living.
Climate, safety, and demographics side by side.
Monroe, LA is about 9.6% cheaper overall than Decatur, IL, based on our cost-of-living index. Housing costs are roughly 27% higher in Decatur than in Monroe. If you earn $80,000 in Decatur, you'd need about $72,295 in Monroe to keep the same standard of living.