Darıca is a municipality and district of Kocaeli Province, Turkey. The town was previously known as Aretsou in by its native Greek population. It…Darıca is a municipality and district of Kocaeli Province, Turkey. The town was previously known as Aretsou in by its native Greek population. Its area is 23 km², and its population is 225,602. The current mayor is Muzaffer Bıyık.