All Countries
O'Fallon, MO
Full City Profile · Missouri
3.8
/5.0
B+
Good
92,697
Population
3,034/sq mi density
$107,203
Median Income
$47,429 per capita
$305,100
Home Value
$465,147 Zillow
$1,400
Median Rent
25.1% income on rent
55°F
Avg Temperature
267 sunny days/yr
127
Violent Crime/100K
1,133 property/100K
B+
Overall
3.8 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
5.0 / 5.0
$107,203 median income, 1.9% unemployment
A+
Affordability
5.0 / 5.0
$305,100 home value, $1,400/mo rent
F
Safety
1.0 / 5.0
127 violent crimes/100K
A
Education
4.4 / 5.0
42.4% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
+13.5%
83,162 → 94,418
over 10 years
Annual Pop. Growth
+1.28%
Compound annual growth rate
Median Income Change
+39.7%
$76,763 → $107,203
nominal, not inflation-adjusted
Annual Income Growth
+3.4%
Compound annual growth rate
Population Over Time
Total population for O'Fallon across each available Census ACS release.
Median Household Income Over Time
Median household income reported by U.S. Census ACS. Values are nominal (not adjusted for inflation).
Projected 2030
Simple projections extrapolating the 2013–2023 compound annual growth rate forward. These are mathematical extensions of recent trends, not forecasts — real outcomes depend on migration, policy and economic shifts.
Projected Population 2030
103,210
+8,792 from 2023 (94,418)
Projected Median Income 2030
$135,472
+$28,269 from 2023 ($107,203)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 83,162 | — | $76,763 | — |
| 2015 | 85,099 | +2.3% | $78,266 | +2% |
| 2017 | 87,538 | +2.9% | $84,580 | +8.1% |
| 2019 | 88,595 | +1.2% | $90,025 | +6.4% |
| 2021 | 93,644 | +5.7% | $96,157 | +6.8% |
| 2023 | 94,418 | +0.8% | $107,203 | +11.5% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.