City comparison
Madison, AL is about 350 miles (550 km) from St. Charles, MO in a straight line. By road, the drive is roughly 450 miles, or about 7 h 15 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 Madison, AL to St. Charles, MO takes about 42 min, covering roughly 350 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.
St. Charles has a population of 70,687, vs 56,967 in Madison — about 1.2× larger by population. By land area, Madison covers about 31 sq mi vs 25 sq mi for St. Charles.
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 | Madison | St. Charles | Difference |
|---|---|---|---|
| Median rent | $1,201/mo | $1,115/mo | 7.7% higher in Madison |
| Median home value | $327,100 | $259,700 | 26.0% higher in Madison |
| Median household income | $118,132 | $83,589 | 41.3% higher in Madison |
| Groceries index | 96.6 | 99.7 | 3.2% higher in St. Charles |
| Utilities index | 84.9 | 71.9 | 18.1% higher in Madison |
| Transportation index | 97.0 | 98.5 | 1.5% higher in St. Charles |
| Healthcare index | 96.5 | 98.7 | 2.2% higher in St. Charles |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Madison, you'd need $100,034 in St. Charles to maintain your standard of living.
Climate, safety, and demographics side by side.
Madison and St. Charles have nearly identical overall cost-of-living indices. If you earn $80,000 in Madison, you'd need about $80,027 in St. Charles to keep the same standard of living.