İzmir Province is a province and metropolitan municipality of Turkey in the Aegean Region, situated along the Aegean coast. Its capital is the city of İzmir, which has 11 districts out of 30 in total. To the west, it is surrounded by the Aegean Sea, and it encloses the Gulf of Izmir. Its area is 11,973 square kilometres (4,623 square miles), with a population of 4,425,789 in 2021. The population was 3,370,866 in 2000. Neighboring provinces are Balıkesir to the north, Manisa to the east, and Aydın to the south.