This indicator is calculated by dividing the number of reported incidences of violent crimes by the population. We multiply the result by 10,000. Violent crimes include murders and non-negligent manslaughter, rape, robbery, and aggravated assault. In counties with relatively few people, a small change in the number of violent crimes reported may have a significant effect on rates from year to year. (See the note about data comparability below.)
In New Hampshire...
Limitation of the Data: The FBI's Uniform Crime Report (UCR) is a voluntary program, whereby participating law enforcement agencies report incidents of seven selected serious crimes. Local agencies may classify reported crimes differently, causing comparability problems at the community level. This is especially true for violent crime in smaller communities, where the small number of offenses may have a significant effect on crime rates from year to year.
Source: U.S. Bureau of the Census, Population Estimates Program, http://www.census.gov/popest/ and http://factfinder2.census.gov/