The mortality map shows equivalent death rates across borders. Indiana, Kentucky, Illinois, Arkansas, Mississippi and Louisiana. And is markedly higher in non-urban (and desperately poor) counties. By contrast, incidence rates (clinical detection preceding mortality) clusters more toward urban and wealthier counties.
Put the maps side-be-side, or toggle them:
Incidence: https://statecancerprofiles.cancer.gov/map/output/ScpMapImg_...
Mortality: https://statecancerprofiles.cancer.gov/map/output/ScpMapImg_...
Evidence against jurisdictional effects.