Law Enforcement Agencies in Petersburg, IL IL › Menard County Agencies serving the city of Petersburg in IL. Agency Types in Petersburg Coroners 1 agencies County Jails 1 agencies Municipal Police 1 agencies Sheriff 1 agencies All Agencies in Petersburg, IL Menard County Coroners Office Menard County Menard County Jail Menard County Menard County Sheriffs Department Menard County Petersburg Police Department Menard County
