Tiassalé Department is a department of Agnéby-Tiassa Region in Lagunes District, Ivory Coast. In 2021, its population was 278,954 and its seat is the settlement of Tiassalé. The sub-prefectures of the department are Gbolouville, Morokro, N'Douci, and Tiassalé.
History
Tiassalé Department was created in 1988 as a first-level subdivision via a split-off from Abidjan Department."Regions of Côte d'Ivoire (Ivory Coast)", statoids.com, accessed 16 February 2016.
In 1997, regions were introduced as new first-level subdivisions of Ivory Coast; as a result, all departments were converted into second-level subdivisions. Tiassalé Department was included in Lagunes 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, Tiassalé Department became part of Agnéby-Tiassa Region in Lagunes District.
In 2012, two sub-prefectures were split from Tiassalé Department to create Taabo Department."Le décret n° 2012-611 du 04 juillet 2012 portant création des Départements de Djékanou, Sipilou, Kong, Gbéléban, Taabo, Kouassi-Kouassikro, Méagui, Séguélon, Buyo, M'Bengué, Facobly et Dianra".
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