From Stamps of the World
Ankara, historically known as Ancyra and Angora, is the capital of Turkey. With a population of 4,587,558 in the urban center (2014) and 5,150,072 in its province (2015), it is Turkey's second largest city after Istanbul (the former imperial capital), having outranked İzmir in the 20th century.
Read more @ https://en.wikipedia.org/wiki/Ankara
Districts of Ankara
Ankara is divided in 25 districts