Sheriff
In many states the sheriff remains the highest ranking county law enforcement officer. Each state decides what powers the sheriff will have. In some states the sheriff is a court officer and law enforcement is left to the police. In other states they are charged with enforcing laws, investigate crimes, transport prisoners and operate jails. A sheriff can appoint deputies. A small sheriff's department might be run by a sheriff alone. A large sheriff's department could have hundreds of deputies and civilian employees. The main difference between a sheriff's office and a police department is that the sheriff usually operates correctional facilities and county civil functions.