Where are save files located?
There is an option in the main menu "Open saves folder".
Prison Architect Save Locations
Linux
~/.Prison Architect/saves/
Mac
~/Library/Application Support/Prison Architect/saves/
Windows
C:\Users\YOUR_NAME\AppData\Local\Introversion\Prison Architect\saves\
Note:
- ~ denotes the home directory of your user.
According to the Prison Architect Wiki, the save file is located at
C:\Users\%username%\AppData\Local\Introversion\Prison Architect\saves