Preliminary FBI data indicates that law enforcement agencies throughout the nation showed an overall increase of 1.7 percent in the number of violent crimes brought to their attention for the first 6 months of 2015, when compared with figures reported for the same time in 2014. The following list is based on several studies. One of them was done by the personal finance site WalletHub. It issued a report considering 25 key metrics across the 50 states and the District of Columbia. The latest official FBI data about crime in the U.S., also compared with the numbers from 2013 have also been taken into account.