The Cyclades are southeast of mainland Greece.
 As a part of the 2011 Kallikratis government reform, the prefecture was abolished, and its territory was divided into nine regional units of the South Aegean region:=== Municipalities and communities ===The prefecture was subdivided into the following municipalities and communities
 The climate is generally dry and mild, but with the exception of Naxos, the soil is not very fertile; agricultural produce includes wine, fruit, wheat, olive oil, and tobacco

