What is the oldest prison still active in the US?
New Jersey State Prison
In his 1917 Master's Thesis, published as "History of the Penal, Reformatory and Correctional Institutions of New Jersey" the late Dr. Harry Elmer Barnes, the noted American historian published a history and analysis of the State Prisons, Reformatories and Penal Institutions of NJ up to that time. His work was an analysis of the application of the various penal philosophies and their successes, failures and changes from 1798 to 1917. He separated the Penitentiary House and the 1832 Fortress Penitentiary into two "Systems" in this work. The reader should note that "System" as used by Dr. Barnes was at that time used as we use "Paradym" today- His "First Prison System in NJ" as applied to the Penitentiary House and "Second Prison System in NJ" as applied to the 1832 facility did not describe two separate prisons nor did it indicate two separate prison agencies.[3]