I need your help.For 14 years, the Prison Policy Initiative has been at the forefront of the movement to keep the prison system from exerting undue influence on our electoral process. Our work has changed how our democracy works in 4 states and hundreds of local governments. We’ve even won at the Supreme Court, but our long-term viability depends on people like you investing in our work.
For Massachusetts: State, federal prisons and county houses of correction: ESRI shapefile
Our database of annotations of each block that contains a correctional facility and the demographic breakdown of each will be accessible at the URL http://www.prisonersofthecensus.org/data/2010blocks/$geoid/ where $geoid is the 15 digit state-county-tract-code of a block with a correctional facility, ie http://www.prisonersofthecensus.org/data/2010blocks/361219702001024/