Compared to the other cities in Illinois and cities in all other U.S. states, how safe is Macomb, IL? From the gauges displayed above, you will notice that Macomb, IL has been ranked safer than 21% of other cities in the state of Illinois. In addition, Macomb, IL is safer than 37% 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 Macomb, IL. By studying this data, it was possible to determine that Macomb, IL is below average in safety when compared with other United States cities.