Crime is not random lottery. It is concentrated and specific to certain places and circumstances. Thus, pretending that it is a stochastic process that is well characterized by per capita number over the whole city, and that if more people move into a bedroom community 20 miles from you, you automatically become safer because per capita numbers decreased - is innumerate at best. If you are present where the crime is concentrated, you risk is high, regardless of how many people live 20 miles from you but still in the same administrative unit. This should be obvious but some people still insist on focusing exclusively on large-area per-capita numbers.
