Greece has up to 6,000 islands depending upon who is counting. Only about 225 are inhabited. Each island is assigned to an archipelago grouping depending on geographical location. Patmos is part of the Dodecanese complex, also called the Southern Sporades. These 165 islands are in the Aegean Sea off the western coast of Turkey. Patmos is only 13 square miles with a 39 mile coastline. Together with a handful of sibling islets, Patmos has a population of about 3,000 residents.