Law Enforcement Agencies in Gentian, MI MI › Marquette County Agencies serving the city of Gentian in MI. Agency Types in Gentian Adult Institutions 1 agencies Campus Police 1 agencies County Jails 1 agencies Municipal Police 2 agencies Sheriff 1 agencies State Police 1 agencies All Agencies in Gentian, MI Chocolay Twp Police Department Marquette County Marquette Branch Prison Marquette County Marquette County Jail Marquette County Marquette County Sheriffs Department Marquette County Marquette Police Department Marquette County Michigan State Police Marquette County Northern Michigan University Marquette County
