| Statistic | Reportedincidents | /100k people | O'Fallon/100k people | Illinois/100k people | National/100k people |
| Total crime | 387 | n/a (estimate) | 1,215 | 2,004 | 2,119 |
| Murder | 1 | n/a | 3.1 | 5.8 | 5.0 |
| Rape | 10 | n/a | 31.4 | 46.9 | 37.5 |
| Robbery | 4 | n/a | 12.6 | 90.2 | 60.6 |
| Assault | 47 | n/a | 147.5 | 146.3 | 256.1 |
| Violent crime | 62 | n/a (estimate) | 195 | 289 | 359 |
| Burglary | 58 | n/a | 182.1 | 290.5 | 229.2 |
| Theft | 216 | n/a | 678.1 | 1,134.4 | 1,272.1 |
| Vehicle theft | 51 | n/a | 160.1 | 290.4 | 258.8 |
| Property crime | 325 | n/a (estimate) | 1,020 | 1,715 | 1,760 |

When we analyze the latest crime report, the O'Fallon crime rate is 42.7% lower than the national average. These incidents are classified into two primary categories: violent and property crimes. Violent crimes include assault, robbery, rape and murder. Whereas property crimes encompass theft, vehicle theft and burglary. In the case of O'Fallon, there were 62 reported violent crimes, equivalent to 195 per 100,000 individuals, 45.8% lower than the national average. Additionally, O'Fallon recorded 325 property crimes, amounting to 1020 per 100,000 residents, 42% lower than the U.S. average.
AreaVibes conducted surveys inquiring about the safety perception of O'Fallon residents. Out of the respondents (21 in total), 71% expressed a strong sense of security, believing that crime rates in O'Fallon were low, and they felt comfortable walking alone at night. Conversely, 29% held a contrasting viewpoint, expressing concerns about safety in the area and feeling uncomfortable walking alone during the nighttime hours.
To determine if O'Fallon is a safe place to live, let's take a look at the overall crime rate of the area, as well as the number of daily crimes. O'Fallon has a total crime rate that is 43% lower than the national average per 100,000 residents. This results in a total of 1.06 daily crimes (0.17 violent daily crimes and 0.89 daily property crimes) in O'Fallon.
Year-over-year crime rates in O'Fallon has increased by 17.3% in the last reported crime report. Comparing crime rates from one year to another offers some insight into whether or not O'Fallon is becoming a safer or more dangerous place to live. Crime rates are categorized by violent and property crime. Year-over-year violent crime has increased by 59%, while property crime has increased by 11.7%. This analysis equips individuals with crucial information for making informed decisions about living in O'Fallon.
If employment opportunities are limited or if many jobs offer low wages, it can lead to higher rates of unemployment and underemployment, which could lead to an increase in O'Fallon crime rates. Areas where individuals struggle with unemployment or low wages, may be more susceptible to an increase in criminal activities as a result of financial insecurity. While lower rates of unemployment or a surplus of job opportunities could lead to a decrease in crime as their basic needs are being met. O'Fallon has an unemployment rate of 2.4%, compared to a national average of 4.9%.
O'Fallon has a population density of 1970.1 people per square mile, contrasting with the national average of 90.6 people per square mile. High population density cities are often large urban hubs teeming with diverse economic opportunities. Within these environments, income disparities can become pronounced, leading to higher poverty levels. This economic divide may contribute to an uptick in property crimes and, occasionally, violent crimes. In contrast, areas characterized by low population density typically exhibit lower O'Fallon crime rates.
The median home price in O'Fallon is $395,443, compared to the national average of $326,622. High housing costs can lead to financial stress for residents. When individuals struggle to make ends meet due to expensive housing, they may be more inclined to engage in criminal activities to address their financial difficulties, such as theft or fraud. Communities with stable housing environments tend to foster stronger social bonds and community engagement. This can lead to increased vigilance and cooperation among residents, which can deter criminal behavior.

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| Item | O'Fallon | Illinois | National |
| Law enforcement employees (officers & civilians) | 59 | 30,690 | 558,732 |
| Police officers & civilians /1000 residents | 2.1 | 2.6 | 3.3 |
| State | Total offenders | Illinois /100K | National /100K |
| Illinois | 32,213 | 263 | 266 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Freeburg, IL | 4,020 | 0 | 156 | 156 |
| Millstadt, IL | 3,967 | 0 | 179 | 179 |
| Smithton, IL | 4,157 | 0 | 233 | 233 |
| New Baden, IL | 3,260 | 90 | 149 | 239 |
| Trenton, IL | 2,656 | 38 | 228 | 266 |
| Lebanon, IL | 4,558 | 88 | 220 | 309 |
| Maryville, IL | 8,220 | 60 | 288 | 348 |
| O'Fallon, IL | 30,151 | 195 | 1,020 | 1,215 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Southgate, MI | 30,149 | 446 | 2,017 | 2,463 |
| Raytown, MO | 30,162 | 864 | 3,737 | 4,601 |
| Maryville, TN | 30,172 | 132 | 506 | 638 |
| Oak Park, MI | 30,129 | 399 | 2,090 | 2,488 |
| Jamestown, NY | 30,127 | 620 | 2,315 | 2,935 |
| O'Fallon, IL | 30,151 | 195 | 1,020 | 1,215 |