Located in northwestern Turkey, it is bordered by Greece and the Aegean Sea to the west, Bulgaria and the Black Sea to the north, the Black Sea Region to the east, the Central Anatolia Region to the southeast and the Aegean Region to the south. At the center of the region is the Sea of Marmara, which gives the region its name. The largest city in the region is Istanbul.
Among the seven geographical regions, the Marmara Region has the second-smallest area, yet the largest population; it is the most densely populated region in the country.
- Çatalca - Kocaeli Section (Turkish: Çatalca - Kocaeli Bölümü)
- Ergene Section (Turkish: Ergene Yöresi)
- Southern Marmara Section (Turkish: Güney Marmara Bölümü)
- Yıldız Section (Turkish: Yıldız Bölümü)
- Aegean and Western Turkey sclerophyllous and mixed forests
- Anatolian conifer and deciduous mixed forests
Provinces that are entirely in the Marmara Region:
Provinces that are mostly in the Marmara Region:
The Yıldız Mountains and Uludağ are in the Marmara Region. Islands in the Aegean Sea are Gökçeada and Bozcaada, and in the Sea of Marmara are Marmara Island, Avşa, Paşalimanı, İmralı and the Princes Islands of Istanbul.
The Marmara region has a hybrid mediterranean climate/humid subtropical climate on the Aegean Sea coast and the south Marmara Sea coast, an oceanic climate on the Black Sea coast and a humid continental climate in the interior. Summers are warm to hot, humid and moderately dry whereas winters are cold and wet and sometimes snowy. The coastal climate keeps the temperatures relatively mild.
- Golyaka Village, Bursa (in Turkish)