Keşan is a town in Edirne Province, Turkey. It is the seat of Keşan District. Its population is 64,842. In the summer its population increases beca…Keşan is a town in Edirne Province, Turkey. It is the seat of Keşan District. Its population is 64,842. In the summer its population increases because of an influx of tourists. The mayor is Mehmet Özcan.