For Emergencies dial 9-1-1, and you will be connected to the nearest Police Dispatch center from where you are calling; if you are calling from a cell phone, let
dispatch know so they can re-bid the call to help in getting the GPS location of where you are calling from.
For all non-emergency calls, you can contact the Dispatch center at (908) 322-7100 x0 and they can direct your call to the proper division.
The main number for the Scotch Plains Police Department is (908) 322-7100, you can use the automated program to be directed to a particular Division/Bureau, go through Dispatch
at x0 or you can look for the extensions which are listed on each Divisions page.