Marana is considered the seventh safest city in all of Arizona and the second safest city with a population of over 30,000 according to a study by ElitePersonalFinance.
ElitePersonalFinance extracted the latest data from the FBI crime statistics in the United States and used the following formula:
Crime Score = ( Total Number of Violent Crimes / Population ) * 1,000
This way, safer cities got the lowest score, and those more vulnerable to crimes got higher scores.
The cities that did not report crimes to the FBI and those under 3,000 residents were not included in the list.
Original source can be found here.