The table above provides a full overview of all reported crimes in O'Fallon, IL for the year. The sum of recorded criminal acts in O'Fallon, IL is displayed; for comparisons, each offense is also shown in regards to the amount of offenses per 100,000 people. Along with this, they are separated into multiple categories: violent crimes and property crimes. The crime data reveals that the overall O'Fallon, IL crime rates are 8% lower than in comparison to the Illinois mean and are 18% lower than the nation's mean. In regards to violent offenses, O'Fallon, IL has a rate that is 58% lower than the Illinois average; compared to the United States, it is 53% lower than. Looking at crimes involving property, O'Fallon, IL is 3% higher than its state's mean, and 12% lower than the country's average.