Here's an interesting read for you.
Murders in US very concentrated: 54% of US counties in 2014 had zero murders, 2% of counties have 51% of the murders
https://crimeresearch.org/2017/04/number-murders-county-54-us-counties-2014-zero-murders-69-1-murder/
"Suburban households are 28.6% more likely to own guns than urban households. Despite lower gun ownership, urban areas experience much higher murder rates. One should not put much weight on this purely “cross-sectional” evidence over one point in time and many factors determine murder rates, but it is still interesting to note that so much of the country has both very high gun ownership rates and zero murders."
"This study shows how murders in the United States are heavily concentrated in very small areas. Few appreciate how much of the US has no murders each year. Murder isn’t a nationwide problem. It’s a problem in a very small set of urban areas, and any solution must reduce those murders."
