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
Collinsville
O'Fallon
Opportunity
56 · Top 50%
vs67 · Top 27%
Growth
21 · Bottom 9%
vs48 · Bottom 46%
Climate
72 · Top 40%
vs71 · Top 46%
Physical resilience
57 · Bottom 49%
vs43 · Bottom 34%
Housing affordability
99 · Top 10%
vs100 · Top 8%
Schools
30 · Bottom 22%
vs69 · Top 28%
Access
95 · Top 36%
vs91 · Bottom 47%
Economic stability
60 · Bottom 49%
vs70 · Top 29%
Measured values
| Metric | Collinsville | O'Fallon | Source period |
|---|---|---|---|
| Population | 24,031 | 32,262 | 2024 ACS 5-Year |
| Median household income | $67,612 | $105,982 | 2024 ACS 5-Year |
| Per capita income | $39,759 | $54,265 | 2024 ACS 5-Year |
| Population density | 1,560/sq mi | 2,041/sq mi | 2024 ACS 5-Year |
| Median home value | $163,600 | $295,700 | 2024 ACS 5-Year |
| Median gross rent | $1,038 | $1,332 | 2024 ACS 5-Year |
| Homeownership rate | 66.0% | 70.2% | 2024 ACS 5-Year |
| Unemployment rate | 3.9% | 3.9% | June 2026 |
| Employment change (year over year) | -0.5% | -0.5% | June 2026 |
| Bachelor's degree or higher | 31.0% | 52.4% | 2024 ACS 5-Year |
| Poverty rate | 12.0% | 6.2% | 2024 ACS 5-Year |
| Housing units permitted (12 months) | 2 | 200 | 12 months ending July 2026 |
| Permits per 1,000 residents | 0.1 | 6.2 | 12 months ending July 2026 |
| Permit change (year over year) | -33.3% | -49.9% | 12 months ending July 2026 |
| Average July high | 89°F | 90°F | 1991-2020 Normals |
| Average January low | 24°F | 24°F | 1991-2020 Normals |
| Annual precipitation | 40.8" | 43.4" | 1991-2020 Normals |
| Distance to major airport | 15 mi | 21 mi | NASR current cycle |
| Average commute | 25.7 min | 25.8 min | 2024 ACS 5-Year |
| Median age | 38.5 | 37.8 | 2024 ACS 5-Year |
| Public schools | 9 | 12 | 2024-25 school year |
| Students per teacher | 13.99 | 16.15 | 2024-25 school year |
| Math proficiency | 12.4% | 36.2% | 2019-20 school year |
| Reading proficiency | 17.0% | 38.0% | 2019-20 school year |
| Free or reduced-price lunch eligibility | 69.1% | 27.4% | 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
Collinsville
Elevated or high exposure: earthquake, hail.
O'Fallon
Elevated or high exposure: inland flooding.
Your best match
Weight what matters to you. Your preferences stay in this browser and never change either Area Score.
Collinsville
61
Your Score
58
Area Score
O'Fallon
70
Your Score
67
Area Score
Select your priorities to see which of the two fits them better.
Full profiles: Collinsville, IL · O'Fallon, IL · How this is calculated: methodology