The article is an analysis of selected elements of the penitentiary system functioning in the Upper Silesian and Zagłębie Metropolis. Penitentiary units located in the area of the Metropolis GZM include six remand prisons and a penal institution. The diagnosis of the capacities and resources of these units made in the article indicates a high degree of self-sufficiency and sufficient potential to ensure the security of the region’s inhabitants. The Prison Service, through its activities, realises the fundamental national interests of the state, ensures the security of society, including security in particular areas of the country.