O'Fallon, MO has a A+ safety grade (90/100) with a violent crime rate of 59 per 100,000, 83% below the national average.
FBI UCR 2024 · per-capita rates · large city
At 94,911 residents, O'Fallon is a large city: FBI UCR Table 8 rates (per 100,000) here are read against MO and U.S. averages before the offense-family breakdown.
Data updated 2026-08-24
O'Fallon, MO carries a PlainCrime A+ safety grade with violent crime 83% below the U.S. average
According to the FBI Uniform Crime Reporting (UCR) Program for 2024, O'Fallon, MO shows violent crime at 59 per 100,000 residents and property crime at 479.4 per 100,000. Violent crime runs 83% below the U.S. average. PlainCrime assigns grade A+ from those rates. Figures are voluntary agency submissions joined to population denominators; incomplete coverage can move the number.
2020–2024 direction
Across 5 comparable reporting years, the rate moved from 127.1 per 100,000 in 2020 to 59.0 in 2024 (-53.6%). The highest observed value was 127.1 in 2020 and the lowest 59.0 in 2024. Years whose submission failed the completeness test are left out of this comparison rather than plotted as change.
Comparable rate records
The nearest comparable 2024 records to O'Fallon's 59.0 violent-crime rate per 100,000 are Lake St. Louis (56.9), Ballwin (56.3), Bernie (54.7), Garden City (64.0). These are same-year agency submissions that pass the same completeness screen, not a claim that the cities have identical conditions. They make the cohort position above checkable against named records instead of a generic state average.
Position in the state cohort
At 59.0 reported violent offenses per 100,000 residents in 2024, O'Fallon ranks 213 of 272 — above 59 of the 271 other Missouri cities whose 2024 submission passes this site’s completeness test. That is -69.0% against the cohort median of 190.0. Cities that did not report, or that reported implausibly low totals, are excluded from this cohort rather than counted as low-crime.
Property counts dominate O'Fallon's FBI UCR Table 8 municipal row. Per-100,000 rates use the reporting-year population on that row; cities that fail the completeness test stay out of rate rankings. A citywide figure rarely describes any single neighbourhood inside the municipal boundary.
On a large city row, these are citywide reported offense totals - not neighbourhood advice. Conditions vary by place and time; reporting rates differ across jurisdictions.
Across 30.6 Census sq mi, O'Fallon logged 14.9 property and 1.8 violent offenses per square mile in 2024.
O'Fallon's 2024 book concentrates in larceny-theft (77% of 511 offenses; mix index 6,029).
Violent offenses are only 11% of the municipal total - a property-led book.
O'Fallon offense mix (2024)
Density uses Census Gazetteer land area (30.6 sq mi); mix index is HHI x 10,000 on the offense-type shares above. Distinct from the per-100K rates in the hero.
| Offense | Count | Rate /100K |
|---|---|---|
| Property Crime | 455 | 479.4 |
| Larceny-Theft | 392 | 413 |
| Motor Vehicle Theft | 34 | 35.8 |
| Burglary | 29 | 30.6 |
| Arson | 5 | 5.3 |
| Violent Crime | 56 | 59 |
| Aggravated Assault | 38 | 40 |
| Rape | 17 | 17.9 |
| Robbery | 1 | 1.1 |
| Murder | 0 | 0 |
Lead series · fell across 5 comparable years · FBI UCR
Secondary series · fell · 2020-2024 · FBI UCR
| Year | Coverage | Population | Violent Rate | Property Rate |
|---|---|---|---|---|
| 2020 | Comparable | 89,698 | 127.1 | 1156.1 |
| 2021 | Comparable | 90,813 | 113.4 | 818.2 |
| 2022 | Comparable | 95,689 | 96.1 | 728.4 |
| 2023 | Comparable | 94,702 | 87.6 | 711.7 |
| 2024 | Comparable | 94,911 | 59 | 479.4 |
O'Fallon Police Department filed the 2024 UCR row behind O'Fallon's 511 reported offenses (5-year span 2020-2024).
This agency reports via NIBRS, the incident-based system that captures more detail per offense (multiple crimes per incident, victim/offender data) than the older summary counts.
Crime rates read differently at different scales, so these are the Missouri cities closest to O'Fallon in population. Their populations run from 53,533 to 130,354, against 94,911 here. Or use our side-by-side compare tool to benchmark two cities directly.
O'Fallon sits at 59/100K violent (grade A+); the Missouri cities below are the nearest matches after size peers are removed.
O'Fallon at 59/100K violent and 479.4/100K property - matched below outside Missouri (≥10k pop, latest UCR vintage; not the in-state lists above).
59/100K here; nearest out-of-state matches.
479.4/100K here; violent-rate peers above excluded.
Out-of-state cities whose violent rate moved a similar share from 2023→2024 (-32.6% here); level-based peers above are excluded.
In 2024, O'Fallon reported 56 violent crimes and 455 property crimes, for a total of 511 reported offenses.
From 2023 to 2024, O'Fallon's violent crime rate decreased by 32.6%, and the property crime rate decreased by 32.6%.
The most common crime type in O'Fallon is larceny-theft, accounting for 76.7% of all reported crimes (392 incidents in 2024).
Large-city read: O'Fallon's rates come from the FBI Uniform Crime Reporting (UCR) Program, CIUS Table 8, vintage 2024.
Incomplete reporters stay out of rate rankings. Cross-check population with Census ACS; state UCR programs for statewide context. Primary verify links: FBI.gov UCR, Census QuickFacts.
Disclaimer (large city): informational crime rates only - not legal, insurance, or personal-safety advice. Source: FBI UCR. Ask a qualified professional before acting.
Large-city rate methodology for how O'Fallon's large city row is sourced and ranked.
Source: FBI Uniform Crime Reporting (UCR) Program CIUS Table 8 municipal crime rates · 2024 O'Fallon, MO rates use the reporting-year population on the municipal row.
Bulk download: city crime dataset (CSV/JSON)
Every figure on PlainCrime is rendered directly from FBI Uniform Crime Reporting (UCR) source data, no number is typed in by an editor. O'Fallon is scored here as a large city UCR reporter (94,911 on the row). See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.