From my database:
My numbers are from the FBI 2001 database for towns over 10,000. The overall crime number is actually the total of reported major crimes / 100 population, or the percentage of the population that got involved in a major crime. This includes rape, robbery, aggravated assault, burglary, larceny-theft, and motor vehicle theft. For the US as a whole, the Murder rate is 3.62/100,000, and the major crime rate is 4.2%.
Section A Lowest per capita homicide rates
Vermont (D) 1.67 4.0
North Dakota (D) 1.81 3.0
New Hampshire (D+) 1.88 2.4
Maine (F) 2.16 3.4
South Dakota (D) 2.18 3.5
Average 1.94 3.26
Section B Highest per capita homicide rates
District of Columbia (A+)(my guess) 51.72 7.7
Louisiana (F) 15.59 7.5
Mississippi (F) 13.53 6.5
Alabama (F) 11.4 5.7
Maryland (A) 11.28 6.6
Average 20.7 6.8
Section C Homicide and O/A crime rates for “A†rated states
Maryland (A) 11.28 6.6
Hawaii (A-) 3.24 5.47
Massachusetts (A-) 2.53 2.1
California (A-*) 8.33 3.6
Connecticut (A-*) 4.72 2.5
New Jersey (A-*) 4.58 2.8
District of Columbia (A) 51.72 7.7
Average 12.34 4.39
Section D C Homicide and O/A crime rates for “F†rated states
Wyoming (F) 3.78 4.4
Maine (F) 2.16 3.4
Louisiana (F) 15.59 7.5
Mississippi (F) 13.53 6.5
Alabama (F) 11.4 5.7
Kentucky (F) 6.23 5.6
Montana (F) 3.92 6.8
Idaho (F+) 3.54 4.3
Average 7.51 5.5