Mahwah Police Department 221 Franklin Tpke, Mahwah, NJ07430 The Mahwah Police Department is located on Franklin Turnpike in Mahwah. Police officers in the town are available to…More respond to emergency situations in the township 24 hours a day, seven days a week. In an emergency situation, residents are asked to call 911. For non-emergency situations, information is available on the police department's website about a number of common issues, including information on reporting problems and complaints. Officers who can help rectify these issues are available by phone, at 201-529-1000.