City comparison
Houston, TX is about 700 miles (1,100 km) from O'Fallon, MO in a straight line. By road, the drive is roughly 850 miles, or about 14 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 Houston, TX to O'Fallon, MO takes about 1 h 21 min, covering roughly 700 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.
Houston has a population of 2,296,253, vs 91,825 in O'Fallon — about 25.0× larger by population. By land area, Houston covers about 640 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 | Houston | O'Fallon | Difference |
|---|---|---|---|
| Median rent | $1,235/mo | $1,311/mo | 6.2% higher in O'Fallon |
| Median home value | $235,000 | $283,600 | 20.7% higher in O'Fallon |
| Median household income | $60,440 | $104,863 | 73.5% higher in O'Fallon |
| Groceries index | 100.4 | 99.7 | 0.7% higher in Houston |
| Utilities index | 96.3 | 71.9 | 34.0% higher in Houston |
| Transportation index | 95.8 | 98.5 | 2.9% higher in O'Fallon |
| Healthcare index | 95.2 | 98.7 | 3.7% 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 Houston, you'd need $89,055 in O'Fallon to maintain your standard of living.
Climate, safety, and demographics side by side.
O'Fallon, MO is about 10.9% cheaper overall than Houston, TX, based on our cost-of-living index. Housing costs are roughly 28% higher in Houston than in O'Fallon. If you earn $80,000 in Houston, you'd need about $71,244 in O'Fallon to keep the same standard of living.