Photo: TCP04 · CC BY 4.0Crime recorded in Defiance, and why it isn’t graded
Widen the search to 25 miles and 45 graded towns turn up. Defiance has no police department of its own: it’s an unincorporated community (a census-designated place) in St. Charles County. The St. Charles County Sheriff’s Office reports to the FBI for the parts of the county without police of their own, so there are no figures for Defiance alone, and no Safety Grade. The nearest town with a Safety Grade is Lake St. Louis, 10 miles away, graded A−.
What stands out about safety in Defiance
Policed by the county
Defiance is a census-designated place, with no town government. Crimes there are reported to the FBI inside the St. Charles County Sheriff’s Office’s totals for the county. County police ↓
Counts, not rates
The FBI doesn’t publish how many people the St. Charles County Sheriff’s Office covers, so its totals can’t be turned into a per-resident rate or a grade for Defiance. County police ↓
The nearest graded towns
The closest Missouri towns with their own police figures are Lake St. Louis (A−, 10 mi), O'Fallon (A−, 11 mi), Cottleville (A+, 11 mi). Nearby towns can differ a lot from Defiance. Nearest ↓
Written from the FBI data on this page. Figures are crimes reported to police, not convictions.
What the St. Charles County Sheriff’s Office reports
Reports to the FBI for the parts of St. Charles County without police of their own, which include Defiance.
Property crimes
Violent crimes
Also reports crimes in St. Charles County to the FBI.
Property crimes
Violent crimes
2025 offenses reported by the St. Charles County Sheriff’s Office
Counts, not rates: the FBI doesn’t publish how many people each agency covers. FBI Uniform Crime Reporting, Tables 10–11.
Crimes reported to the FBI for the whole area the department covers, by year.
The nearest Missouri towns with a Safety Grade
| Town | Grade | Distance | Violent | Property |
|---|---|---|---|---|
| Lake St. Louis | A− | 10 mi | 0.8 | 4.6 |
| O'Fallon | A− | 11 mi | 0.8 | 5.7 |
| Cottleville | A+ | 11 mi | 0.3 | 0.9 |
| Pacific | B− | 11 mi | 2.5 | 10.5 |
| Ellisville | B+ | 11 mi | 1.2 | 7.3 |
| Chesterfield | B | 11 mi | 1.0 | 11.3 |
Straight-line distance from the center of Defiance. Nearby towns can differ a lot from Defiance.
Each town’s own police figures, per 1,000 residents a year, 2023–2025.
No one died in a crash on Defiance’s roads in 2019–2023
That is about what is typical for Missouri towns of 2,500–5,000 people: at their median rate (7.2 deaths per 100,000 residents a year), a town of Defiance’s size would see about 0 in five years. With numbers this small, a death or two either way changes the picture, so Defiance’s own rate (0.0) is context, not a ranking.
Deaths are counted where the crash happened, not where the people lived: a highway through town adds through-traffic deaths, and residents’ own risk on roads elsewhere isn’t here. Town rates sit below state and U.S. rates because a third of fatal crashes happen outside any town. Road safety is described here and is not part of the Safety Grade. Source: NHTSA Fatality Analysis Reporting System (FARS), 2019–2023.
Defiance and its neighbors
| Town | Grade | Violent | Property |
|---|
Crimes reported to the FBI per 1,000 residents a year, 2023–2025.
How reported crime compares across the town line. Tap a town to see its safety page.
What this data can and can’t tell you
- It’s reported crime. Only incidents reported to and recorded by police appear here. Many crimes are never reported to police.
- A county agency covers a wide area. Its totals mix many communities, so they say little about any one of them.
- Gaps are real gaps. A missing year means the department didn’t report a full year, not that nothing happened.
How the grade is calculated, for every town: How TownRatings grades safety →
Questions about safety in Defiance
Is Defiance, MO safe?
There is no Safety Grade for Defiance. The nearest Missouri towns with a grade are Lake St. Louis (A−, 10 mi), O'Fallon (A−, 11 mi), Cottleville (A+, 11 mi).
Who polices Defiance?
The St. Charles County Sheriff’s Office. Defiance is an unincorporated community, and the department reports to the FBI for the parts of St. Charles County without police of their own.
Heads-up board
Your answer becomes a post in Town Square.
Please don’t name or describe individuals. In an emergency, call 911.
Neighbors looking out for each other in Defiance.
Crime: FBI Uniform Crime Reporting Program, Crime Data Explorer: offenses known to law enforcement by city, and state and national rates. Counts are crimes reported to police, not convictions. The Safety Grade is our own summary of that data, not an official rating. Road deaths: NHTSA Fatality Analysis Reporting System (FARS), 2019–2023. This isn’t an official statement of public safety. In an emergency, call 911.