Heybeliada Postal Codes: 34973 | Adalar, İstanbul, Marmara
The Postal Codes (Posta kodları) for Heybeliada is 34973 in Adalar, İstanbul, Marmara, Adalar, Turkey. The table below lists Postal Codes and postcodes for places within Heybeliada.
Postal Codes for Places in Heybeliada
Showing 1 places in Heybeliada. Last verified with official records on April 25, 2026.
| Heybeliada mah. |
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Sample Address Format for Heybeliada
[Sender Street Address]
[City, ZIP]
[Country]
Street Address / PO Box
Heybeliada, Adalar, İstanbul, Marmara, 34973
TURKEY
Heybeliada on the Map
The map above highlights the geographic boundaries of the Heybeliada towns in Turkey.
Heybeliada Quick Facts
| Country | Turkey (TR) |
|---|---|
| Administrative Path | Turkey → Marmara → İstanbul → Adalar |
| Postal Code | 34973 |
| Regions | Marmara |
| Provinces | İstanbul |
| Districts | Adalar |
| ISO Codes | TR / TUR / 792 |
| Top-level domain (ccTLD) | .tr |
| Coordinates | 40.877412, 29.099268 |
| Places | 1 |
What to Know About Heybeliada
Key Facts
Heybeliada is one of the nine islands comprising the Adalar (Princes' Islands) district of İstanbul, Turkey. Located in the Sea of Marmara approximately 20 kilometers southeast of central İstanbul, it is the second largest of the islands after Büyükada. Heybeliada covers an area of approximately 2.34 square kilometers and has a permanent population of around 4,000 residents, though this number swells significantly during summer months due to tourism. The island is administratively divided into four main neighborhoods: Aşağı Mahalle (Lower Neighborhood), Yukarı Mahalle (Upper Neighborhood), Çam Limanı (Pine Harbor), and Değirmen Burnu (Mill Cape). Known for its lush pine forests, historic architecture, and car-free environment where transportation is limited to bicycles, horse-drawn carriages, and electric vehicles, Heybeliada is a popular retreat for both locals and visitors. The island is home to notable institutions including the Turkish Naval Academy and the historic Halki Theological Seminary. For detailed postal code information covering Heybeliada's neighborhoods and specific addresses, comprehensive resources are available to assist with navigation and mail delivery across the island.