Nassian Department was created in 2005 as a second-level subdivision via a split-off from Bouna Department.[3][4] At its creation, it was part of Zanzan Region.
In 2011, districts were introduced as new first-level subdivisions of Ivory Coast. At the same time, regions were reorganised and became second-level subdivisions, and all departments were converted into third-level subdivisions. At this time, Nassian Department became part of Bounkani Region in Zanzan District.
In 2014, the population of the sub-prefecture of Nassian was 19,971.[5]
Villages
The seventeen villages of the sub-prefecture of Nassian and their population in 2014 are:[5]
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