Compared to the other cities in Illinois and cities in all other U.S. states, how safe is Harvey, IL? From the gauges displayed above, you will notice that Harvey, IL has been ranked safer than 2% of other cities in the state of Illinois. In addition, Harvey, IL is safer than 4% of cities in the entire United States. To achieve these results, all Illinois and United States cities were analyzed to determine how many locations had a lower crime rate than Harvey, IL. By studying this data, it was possible to determine that Harvey, IL is below average in safety when compared with other United States cities.