New York City has the highest concentration of law enforcement in the United States.
Members of New York City law enforcement agencies receive their powers and authority from New York State Criminal Procedure Law as listed: Since 1942, correction and probation services have been handled by separate agencies, not the sheriff's office.
While their jurisdiction stretches throughout New York City, many functions are duplicated by municipal agencies.
A limited number of personnel are New York State peace officers after completing the New York State Peace Officer Standard of Training (POST) course.
This grants them very limited peace officer authority within their geographical area of employment in New York City.