Erdemli is a municipality and district of Mersin Province, Turkey. Its area is 2,279 km², and its population is 151,928. It is 35 km west of the city o…Erdemli is a municipality and district of Mersin Province, Turkey. Its area is 2,279 km², and its population is 151,928. It is 35 km west of the city of Mersin. Erdemli is located between the districts of Mezitli and Silifke. In the north, Erdemli is bordered by Karaman Province and in the south by the Mediterranean Sea.