Catalca
Catalca is the largest district of Istanbul in view of Surface area however Catalca is the third least crowded district after Adalar and Sile districts.
Tekirdag city andSilivri on the West, Black sea on the North, Buyukcekmece on the South and Arnavutkoy on the east are the neighbours of Catalca.
The economy of Catalca based on agriculture, live stocks and animal products.