It is great that you are about to graduate with a 4 year degree. Getting a college degree is one of the best things that you can do if you want to become a police officer. Your possession of alcohol charge as a minor shouldn't be too much of a problem, especially if you are a good candidate otherwise. Nowadays, many people have to relocate to get a police officer job. You could apply for, and get a job with many police departments without being a resident of the state, but you would have to become a resident within a certain amount of time. Different departments have different requirements. Getting police officer jobs can be very competitive. Do whatever you can to make yourself the best candidate that you can.