O'Fallon receives the higher standardized Area Score. That reflects AreaProfile's weighting, not a judgment about which place is better to live in.
Signals
O'Fallon
St. Louis
Opportunity
85 · Top 3%
vs57 · Top 48%
Growth
69 · Top 18%
vs33 · Bottom 21%
Climate
70 · Bottom 49%
vs72 · Top 40%
Physical resilience
50 · Bottom 43%
vs58 · Top 50%
Housing affordability
100 · Top 8%
vs87 · Top 39%
Schools
83 · Top 9%
vs26 · Bottom 17%
Access
91 · Bottom 47%
vs98 · Top 20%
Economic stability
82 · Top 5%
vs41 · Bottom 19%
Measured values
| Metric | O'Fallon | St. Louis | Source period |
|---|---|---|---|
| Population | 93,801 | 288,512 | 2024 ACS 5-Year |
| Median household income | $110,443 | $56,160 | 2024 ACS 5-Year |
| Per capita income | $49,304 | $41,187 | 2024 ACS 5-Year |
| Population density | 3,070/sq mi | 4,675/sq mi | 2024 ACS 5-Year |
| Median home value | $326,200 | $197,500 | 2024 ACS 5-Year |
| Median gross rent | $1,443 | $997 | 2024 ACS 5-Year |
| Homeownership rate | 81.0% | 45.3% | 2024 ACS 5-Year |
| Unemployment rate | 2.9% | 4.1% | June 2026 |
| Employment change (year over year) | 0.2% | 0.2% | June 2026 |
| Bachelor's degree or higher | 43.3% | 41.1% | 2024 ACS 5-Year |
| Poverty rate | 5.4% | 20.6% | 2024 ACS 5-Year |
| Housing units permitted (12 months) | 546 | 304 | 12 months ending July 2026 |
| Permits per 1,000 residents | 5.8 | 1.1 | 12 months ending July 2026 |
| Permit change (year over year) | 7.3% | 53.5% | 12 months ending July 2026 |
| Average July high | 90°F | 89°F | 1991-2020 Normals |
| Average January low | 22°F | 24°F | 1991-2020 Normals |
| Annual precipitation | 39.8" | 40.8" | 1991-2020 Normals |
| Distance to major airport | 19 mi | 10 mi | NASR current cycle |
| Average commute | 27.1 min | 23.8 min | 2024 ACS 5-Year |
| Median age | 38.4 | 36.8 | 2024 ACS 5-Year |
| Public schools | 23 | 108 | 2024-25 school year |
| Students per teacher | 13.33 | 11.51 | 2024-25 school year |
| Math proficiency | 53.3% | 14.7% | 2019-20 school year |
| Reading proficiency | 60.5% | 22.2% | 2019-20 school year |
| Free or reduced-price lunch eligibility | 18.9% | 92.1% | 2024-25 school year |
A bolded value is the more favorable of the two where the metric has a clear direction. Metrics like population and density have no inherent better or worse and are shown unweighted.
Physical risk tradeoff
O'Fallon
Elevated or high exposure: hail, earthquake, inland flooding.
St. Louis
Elevated or high exposure: inland flooding.
Full profiles: O'Fallon, MO · St. Louis, MO · How this is calculated: methodology