The scenery of Bursa from Uludağ with the old aerial tramway.
Yıldırım, which is located at the foot of the Mt. Uludağ is 399 square kilometers (km²) and 150–155 metres in elevation. Kestel and Gürsu are located west of Yıldırım, and Demirtaş, a subdistrict of Osmangazi, lies to the north. South of Yıldırım is Mt. Uludağ and to the north are relatively flat lands. The Bursa-Ankara highway passes through the Yıldırım district.
The district Yıldırım with the Osmangazi and Nilüfer constitutes the Bursa metropolitan municipality. It has 66 quarters and a village called Cumalıkızık, where it is possible to examine the characteristics of Ottoman architecture. This settlement's historical architectural uniqueness has totally been preserved, and has made the Yıldırım sub-province famous. Concerning population, Yıldırım is bigger than many cities in Turkey. According to the 2000 census, it has a population of 629,702. 30% of Bursa's population lives in Yıldırım district.