Overview
About O'Fallon
With about 92,697 residents, O'Fallon is one of Missouri's notable places. O'Fallon was founded in 1856 and sits in St. Charles County. The median age is 38.2 and the median household income is $107,203. Homes carry a median value of $305,100, and about 80% of residents own where they live. White residents make up the largest share of the population (81.4%). Around 42% of adults hold a bachelor's degree or higher, and the typical commute runs about 26 minutes.
Source: U.S. Census Bureau, American Community Survey (5-year).
Who lives here
Demographics
Source: U.S. Census Bureau, American Community Survey (5-year).
Housing
Property report
Area-level figures. Source: U.S. Census Bureau, ACS (5-year). Parcel-level records coming next.
Education
Schools
O'Fallon has 21 public schools — 12 elementary, 3 middle, 4 high.
% of students at or above proficient on state assessments.
Public schools + grade-8 proficiency. Source: U.S. Dept. of Education (NCES directory + EDFacts assessments), via Urban Institute.
Safety
Crime
Rate per 100,000 residents/year, O'Fallon Police Department, 2023. Source: FBI UCR/NIBRS (Crime Data Explorer).
Environment
Environmental hazards
Toxic-release sites and regulated facilities in and around O'Fallon.
Data source being added: U.S. EPA — Toxics Release Inventory (public). We show real, sourced figures only — never estimates.
Risk
Natural disaster risk
County-level natural-hazard risk. Source: FEMA National Risk Index.
Context
Neighborhood info
O'Fallon is in St. Charles County — see county-wide risk, demographics, and registry.
O'Fallon was founded in 1856 and sits in St. Charles County. Elevation ~165 m.
1 on the National Register of Historic Places.
Registered sex offenders in O'Fallon, MO (7)
Public sex-offender registry records for O'Fallon, Missouri.
Source: Dru Sjodin National Sex Offender Public Website (NSOPW) and state registries. Public record. This information is provided for public awareness. Using it to harass, threaten, or discriminate against any registrant, or for any purpose prohibited by law, is illegal. Verify against the official registry record before relying on it.
Common questions