| Statistic | Reportedincidents | /100k people | Marion/100k people | Illinois/100k people | National/100k people |
| Total crime | 573 | n/a (estimate) | 3,399 | 2,004 | 2,119 |
| Murder | 0 | n/a | 0.0 | 5.8 | 5.0 |
| Rape | 8 | n/a | 47.5 | 46.9 | 37.5 |
| Robbery | 11 | n/a | 65.3 | 90.2 | 60.6 |
| Assault | 60 | n/a | 356.0 | 146.3 | 256.1 |
| Violent crime | 79 | n/a (estimate) | 469 | 289 | 359 |
| Burglary | 186 | n/a | 1,103.5 | 290.5 | 229.2 |
| Theft | 279 | n/a | 1,655.2 | 1,134.4 | 1,272.1 |
| Vehicle theft | 29 | n/a | 172.0 | 290.4 | 258.8 |
| Property crime | 494 | n/a (estimate) | 2,931 | 1,715 | 1,760 |

The Marion crime rates are 60.4% higher than the national average. There are two main categories of crime - violent crime and property crime. Violent crime consists of murder, rape, robbery and assault, while property crimes include burglary, theft and vehicle theft. There were a total of 79 violent crimes in Marion (469 per 100,000 people), which is 30.5% higher than the national average and there were a total of 494 property crimes (2931 per 100,000 residents) which is 66.5% higher than average.
In the most recently reported crime year, Marion registered zero reported homicides. This statistic not only designates the area as an exemplar of security but also emanates a profound sense of safety within its community. A minimal incidence of severe violent crime not only fosters a strong sense of well-being among residents but also sets a commendable standard for other regions aiming to cultivate similarly safe surroundings.
What is the prevailing sentiment among Marion residents regarding the state of crime? A comprehensive survey conducted by AreaVibes, involving 8 respondents, sheds light on this matter. The results were as follows: 50% of Marion residents expressed a notable sense of security, asserting that crime was virtually non-existent in their community, and they felt at ease strolling the streets after dark. While, 50% of those surveyed held a contrasting viewpoint, perceiving a higher incidence of crime, leading them to feel apprehensive about walking alone at night.
Determining whether Marion is a place to live may not always yield a simple answer, given the city's varying safety levels across different areas. Nonetheless, comprehending the city's overall crime rate can be a valuable asset. In broad terms, Marion has an overall crime rate that is 60% higher than the national average. When we take a look at crime on a daily basis, this translates into 1.57 daily occurrences, comprising 0.22 violent crimes and 1.35 property crimes. Scrutinizing these statistics provides a foundation for a more informed assessment of the suitability of Marion as a potential place to establish residency.
Marion has a poverty rate of 17.2, while the national average is 15.1. In the past, there has been a direct correlation between high or low poverty rates and high or low crime stats. Elevated poverty levels and income disparities can contribute to heightened criminal activity, as individuals may resort to unlawful means to address their fundamental necessities. While lower poverty levels have led to a reduction in typical crime levels compared to other areas.
In Marion, 85.5% of residents have graduated from high school, whereas the national average stands at 83%. The educational makeup of a community can exert a significant influence on crime rates. Typically, higher levels of educational attainment are associated with reduced crime rates, as they furnish individuals with improved employment prospects and viable alternatives to engaging in criminal activities. Conversely, communities characterized by lower educational achievement often grapple with higher crime rates, as limited opportunities may drive individuals towards criminal behavior.
In Marion, the cost of living is 7.88% lower than the national average. A substantial cost of living can burden residents, particularly those with constrained financial means. When individuals contend with steep housing expenses, grocery bills, utility costs, healthcare and essential needs that strain their budgets, they may turn to criminal activities, such as theft or fraud, as a means of financial survival. Conversely, cities characterized by a more affordable cost of living may alleviate economic pressures, which could potentially lead to decreased crime rates.

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| Item | Marion | Illinois | National |
| Law enforcement employees (officers & civilians) | 39 | 30,690 | 558,732 |
| Police officers & civilians /1000 residents | 2.3 | 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 |
| Goreville, IL | 1,150 | 0 | 94 | 94 |
| Crainville, IL | 1,425 | 106 | 628 | 734 |
| Energy, IL | 1,242 | 127 | 753 | 880 |
| Royalton, IL | 1,140 | 141 | 837 | 978 |
| Cambria, IL | 1,100 | 143 | 850 | 994 |
| Zeigler, IL | 1,826 | 161 | 953 | 1,114 |
| Johnston City, IL | 3,543 | 197 | 1,169 | 1,366 |
| Marion, IL | 18,022 | 469 | 2,931 | 3,399 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Redland, MD | 18,022 | 291 | 1,423 | 1,714 |
| Parole, MD | 18,012 | 171 | 836 | 1,008 |
| Hermiston, OR | 18,009 | 318 | 3,225 | 3,543 |
| Centralia, WA | 18,008 | 270 | 2,738 | 3,008 |
| Bostonia, CA | 18,008 | 539 | 2,306 | 2,845 |
| Marion, IL | 18,022 | 469 | 2,931 | 3,399 |