present districts of Arnavutköy, Beylikdüzü, Büyükçekmece, western parts of Başakşehir, rural parts of Eyüp and Sarıyer. In 1930 county (bucak) of Kilyos was part of district of Sarıyer, used to be part of Beyoğlu. At same time, villages of Odayeri, Ağaçlı, İhsaniye and Kısırmandıra (Işıklar after 1987) were passed to Kemerburgaz county (formerly part of Beyoğlu district) of Sarıyer. In 1963, villages as Arnavutköy, Bolluca, Hacımaşlı, Haraççı and İmrahor of Boyalık (its center was Hadımköy) county part of district of Gaziosmanpaşa, formerly part of Eyüp. In 1972 Tayakadın village of Boyalık county and Yeniköy one of it were passed to Gaziosmapaşa. In 1987 county of Büyükçekmece was separated and become district. Finally in 2009 remainder of Boyalık county was passed to Arnavutköy, was part of Gaziosmanpaşa and Muratbey village was passed to Büyükçekmece. Population As of a November 22, 2000 census, the population of Çatalca district was 81,589, while the city of Çatalca had a population of 36,544 in 2009. The population growth rate was 0.66%. The literacy rate was 99%. Geography Çatalca has an area of 1,715 km² and 135 kilometers of coastline. Its neighbors include Çatalca to the south, and Silivri and Tekirdağ Province to the west. Avcılar, Küçükçekmece, and Arnavutköy lie to the east. Fresh water for Istanbul is provided from by lakes Durusu and Çatalca. Yalıköy is a seaside resort of Çatalca. The Çilingoz Nature Park west of Yalıköy offers camping and outdoor recreation activities. Media At Çatalca, there is a mediumwave broadcasting station with a 226 metres tall mast. It works on 702 kHz with 600 kW. International relations Twin towns and sister cities Çatalca is twinned with: Fancy, Saint Vincent and the Grenadines Oran, Algeria Diego Garcia, British Indian Ocean Territory Hitadhoo, Maldives Ganja, Azerbaijan Lille, France Kule, Botswana Gallery References External links District governor's official website District municipality's official website Çatalca local news website GCatholic with titular incumbent bio links Cities in Turkey Populated places in Istanbul Province Districts of Istanbul Province