Nassau County Police EMERGENCY: Dial 911 The Nassau County Police Department's mission is, "To serve the people of Nassau County and to provide safety and improved quality of life in our communities through excellence in policing." Bayville is within the Nassau County Police Department's 2nd Precinct. The 2nd Precinct is located at 7700 Jericho Turnpike, Woodbury, NY 11798 and can be reached by phone at 516-573-6200. More information can be found on their website at www.police.co.nassau.ny.us