The 14 regions of Senegal are subdivided into 46 departments and 103 arrondissements (neither of which have administrative function) and by collectivités locales (the 14 régions, 110 communes, and 320 communautés rurales) which elect administrative officers. Since three new regions increased the number of departments to 45 in 2008, the most recent addition, of Keur Massar, in May 2008 brings the number to 46. The departments are listed below, by region:

Dakar Region

Diourbel Region

Fatick Region

Kaffrine Region

Kaolack Region

Kédougou Region

Kolda Region

Louga Region

Matam Region

Saint-Louis Region

Sédhiou Region

Tambacounda Region

Thiès Region

Ziguinchor Region