City comparison
Lee's Summit, MO is about 200 miles (325 km) from O'Fallon, MO in a straight line. By road, the drive is roughly 250 miles, or about 4 h 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 Lee's Summit, MO to O'Fallon, MO takes about 24 min, covering roughly 200 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.
Lee's Summit has a population of 101,728, vs 91,825 in O'Fallon — about 1.1× larger by population. By land area, Lee's Summit covers about 64 sq mi vs 31 sq mi for O'Fallon.
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 | Lee's Summit | O'Fallon | Difference |
|---|---|---|---|
| Median rent | $1,295/mo | $1,311/mo | 1.2% higher in O'Fallon |
| Median home value | $291,400 | $283,600 | 2.8% higher in Lee's Summit |
| Median household income | $103,447 | $104,863 | 1.4% higher in O'Fallon |
| Groceries index | 94.3 | 99.7 | 5.7% higher in O'Fallon |
| Utilities index | 89.3 | 71.9 | 24.2% higher in Lee's Summit |
| Transportation index | 93.7 | 98.5 | 5.1% higher in O'Fallon |
| Healthcare index | 93.9 | 98.7 | 5.1% higher in O'Fallon |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Lee's Summit, you'd need $97,781 in O'Fallon to maintain your standard of living.
Climate, safety, and demographics side by side.
O'Fallon, MO is about 2.2% cheaper overall than Lee's Summit, MO, based on our cost-of-living index. Housing costs are roughly 8% higher in Lee's Summit than in O'Fallon. If you earn $80,000 in Lee's Summit, you'd need about $78,225 in O'Fallon to keep the same standard of living.