Adalar Postal Codes: 34970 to 34977 | İstanbul, Marmara

Key Facts

Adalar, also known as the Princes' Islands, is a district of Istanbul, Turkey, located in the Sea of Marmara. Situated southeast of the Istanbul city center, this archipelago consists of nine islands, with Büyükada, Heybeliada, Burgazada, and Kınalıada being the four largest and most populated. The district covers a total land area of approximately 16 square kilometers and has a population of around 16,000 residents as of recent estimates. Adalar is administratively divided into four neighborhoods corresponding to the main inhabited islands. Known for their peaceful atmosphere, historic wooden mansions, and car-free environment (motor vehicles are banned), the islands are popular tourist destinations accessible by ferry from Istanbul. The district offers visitors a unique glimpse into Ottoman and early Republican era architecture while providing postal code services for its residential and commercial areas through its neighborhood subdivisions.