The sub-prefectures of the department are Gbolouville, Morokro, N'Douci, and Tiassalé.
Tiassalé Department was included in Lagunes Region.
In 2011, districts were introduced as new first-level subdivisions of Ivory Coast.
At this time, Tiassalé Department became part of Agnéby-Tiassa Region in Lagunes District.
This Lagunes District location article is a stub.