Law Enforcement Agencies in West Trenton, NJ NJ › Mercer County Agencies serving the city of West Trenton in NJ. Agency Types in West Trenton Federal 1 agencies State Police 13 agencies All Agencies in West Trenton, NJ Federal Aviation Administration Mercer County New Jersey State Police Mercer County New Jersey State Police Mercer County New Jersey State Police Mercer County New Jersey State Police Mercer County New Jersey State Police Mercer County New Jersey State Police Mercer County New Jersey State Police Mercer County New Jersey State Police Mercer County New Jersey State Police Mercer County New Jersey State Police Mercer County New Jersey State Police Mercer County New Jersey State Police Mercer County New Jersey State Police Mercer County
