City comparison
Florissant, MO is about 20 miles (20 km) from St. Peters, MO in a straight line. By road, the drive is roughly 20 miles, or about 19 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 Florissant, MO to St. Peters, MO takes about 2 min, covering roughly 20 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. Peters has a population of 57,692, vs 52,167 in Florissant — about 1.1× larger by population. By land area, St. Peters covers about 23 sq mi vs 13 sq mi for Florissant.
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 | Florissant | St. Peters | Difference |
|---|---|---|---|
| Median rent | $1,195/mo | $1,186/mo | 0.8% higher in Florissant |
| Median home value | $125,200 | $237,100 | 89.4% higher in St. Peters |
| Median household income | $64,178 | $88,708 | 38.2% higher in St. Peters |
| Groceries index | 99.7 | 99.7 | ≈ equal |
| Utilities index | 71.9 | 71.9 | ≈ equal |
| Transportation index | 98.5 | 98.5 | ≈ equal |
| Healthcare index | 98.7 | 98.7 | ≈ equal |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Florissant, you'd need $99,966 in St. Peters to maintain your standard of living.
Climate, safety, and demographics side by side.
Florissant and St. Peters have nearly identical overall cost-of-living indices. If you earn $80,000 in Florissant, you'd need about $79,973 in St. Peters to keep the same standard of living.