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
Belleville
Opportunity
67 · Top 27%
vs49 · Bottom 35%
Growth
48 · Bottom 46%
vs19 · Bottom 7%
Climate
71 · Top 46%
vs71 · Top 46%
Physical resilience
43 · Bottom 34%
vs43 · Bottom 33%
Housing affordability
100 · Top 8%
vs97 · Top 14%
Schools
69 · Top 28%
vs45 · Bottom 41%
Access
91 · Bottom 47%
vs88 · Bottom 36%
Economic stability
70 · Top 29%
vs46 · Bottom 26%
Measured values
| Metric | O'Fallon | Belleville | Source period |
|---|---|---|---|
| Population | 32,262 | 41,370 | 2024 ACS 5-Year |
| Median household income | $105,982 | $63,535 | 2024 ACS 5-Year |
| Per capita income | $54,265 | $34,085 | 2024 ACS 5-Year |
| Population density | 2,041/sq mi | 1,780/sq mi | 2024 ACS 5-Year |
| Median home value | $295,700 | $141,300 | 2024 ACS 5-Year |
| Median gross rent | $1,332 | $1,019 | 2024 ACS 5-Year |
| Homeownership rate | 70.2% | 60.1% | 2024 ACS 5-Year |
| Unemployment rate | 3.9% | 4.4% | June 2026 |
| Employment change (year over year) | -0.5% | -0.5% | June 2026 |
| Bachelor's degree or higher | 52.4% | 28.0% | 2024 ACS 5-Year |
| Poverty rate | 6.2% | 14.6% | 2024 ACS 5-Year |
| Housing units permitted (12 months) | 200 | 8 | 12 months ending July 2026 |
| Permits per 1,000 residents | 6.2 | 0.2 | 12 months ending July 2026 |
| Permit change (year over year) | -49.9% | -20.0% | 12 months ending July 2026 |
| Average July high | 90°F | 90°F | 1991-2020 Normals |
| Average January low | 24°F | 24°F | 1991-2020 Normals |
| Annual precipitation | 43.4" | 43.4" | 1991-2020 Normals |
| Distance to major airport | 21 mi | 26 mi | NASR current cycle |
| Average commute | 25.8 min | 25.9 min | 2024 ACS 5-Year |
| Median age | 37.8 | 39.1 | 2024 ACS 5-Year |
| Public schools | 12 | 17 | 2024-25 school year |
| Students per teacher | 16.15 | 13.55 | 2024-25 school year |
| Math proficiency | 36.2% | 16.4% | 2019-20 school year |
| Reading proficiency | 38.0% | 24.4% | 2019-20 school year |
| Free or reduced-price lunch eligibility | 27.4% | 66.5% | 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: inland flooding.
Belleville
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.
O'Fallon
70
Your Score
67
Area Score
Belleville
57
Your Score
55
Area Score
Select your priorities to see which of the two fits them better.
Full profiles: O'Fallon, IL · Belleville, IL · How this is calculated: methodology