Rural crime in south probably accelerated after the Civil War. With a broken economy and less capable or respected law enforcement, some were driven or attracted to theft. Prohibition provided another jolt.
Chicago mob was big in Missouri. Certainly big towns and rural areas likely too especially for making and hiding illegal booze.
Another example
http://www.americanmafia.com/Cities/Omaha.html
Centered around a city but unlikely limited to it.
Johnson City TN was at one time known as Little Chicago for bootlegging and probably more.
Some South Dakota reservations have organized, violent gangs.
Is your interest academic, literary, personal curiosity or what?
There is often "courthouse" / white collar criminal rings that acquire / use influence to get government jobs & contracts that are not as obvious.
And
http://www.dallasobserver.com/news/w...m-dead-7947080