Souza-Baranowski Correctional Center is a maximum security prison in Lancaster, Massachusetts, in the United States. It is operated by the Massachusetts Department of Correction. It is close to the medium security prison Massachusetts Correctional Institution – Shirley, which is directly to the north, in Shirley. Souza-Baranowski opened on September 30, 1998 and is among the most technologically advanced prisons in the United States.
Although the prison is physically located in Lancaster, it gets its mail through a post-office box in the nearby town of Shirley.
Souza-Baranowski Correctional Center
PO Box 8000
Shirley, MA 01464