Compared to the other cities in Iowa and all other cities across the US, is Carlisle safe? From the gauges displayed above, you will notice that Carlisle is safer than 10% of other cities in the state of Iowa. In addition, Carlisle is safer than 17% of cities in the entire United States. To achieve these results, all Iowa and United States cities were analyzed to determine how many locations had a lower crime rate than Carlisle. By studying this data, it was possible to determine that Carlisle is below average in safety when compared with other United States cities.