Two prisons are located in Vacaville, California, United States:
These two prisons are located together at the base of several hills on the outskirts of Vacaville. These prisons are also located fairly close to Travis Air Force Base.
38°19′44″N121°58′48″W / 38.329°N 121.980°W 38°19′19″N121°58′30″W / 38.322°N 121.975°W