The sub-prefectures of the department are Dassoungboho, Kanoroba, Karakoro, Kiémou, Kombolokoura, Komborodougou, Koni, Korhogo, Lataha, Nafoun, Napiéolédougou, N'Ganon, Niofoin, Sirasso, Sohouo, and Tioroniaradougou.

Using current boundaries as a reference, from 1969 to 2008 the department occupied the same territory as Poro Region.

Korhogo Department was included as part of Savanes Region.

In 2011, districts were introduced as new first-level subdivisions of Ivory Coast.

At this time, Korhogo Department became part of Poro Region in Savanes District.