Government in Oneida, IL Oneida Maintenance Building114 E Prospect StOneida, IL, 614673094832122Government City Village TownshipOntario Township Building389 W Ontario StOneida, IL, 614673094836312Blackhawk Twp SupervisorGovernment City Village TownshipUnemployment OfficeVillage OfShow MoreSee AlsoCity, Village & Township GovernmentGovernment Offices