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