Answer:
Since Criminal Justice is a Major it depends on the institution, on your work ethic and also on what degree. It depends on the institution because larger colleges have more option for when to take classes so if you can't take a class in a certain semester larger institutions offer more of that specific class so it is easier to graduate on time. Your work ethic because the more you work the faster it can be done usually. Associates degrees are usually two years, Bachelor Degrees are four years and Masters are usually 6 years. Go to colleges and find the adviser for Criminal Justice students and they will be able to help you out more.