Location of Başakşehir in Istanbul
|• Mayor||Mevlüt Uysal (AKP)|
|Elevation||70 m (230 ft)|
|Time zone||EET (UTC+2)|
|• Summer (DST)||EEST (UTC+3)|
Başakşehir is situated in the European portion (Rumeli) of İstanbul at . Sazlıdere Dam reservoir is to the northwest and Sea of Marmara is to the south. It is surrounded by other second-level districts of Istanbul, such as Eyüp, Sultangazi, Esenler, Bağcılar, Küçükçekmece, Avcılar, Esenyurt and Arnavutköy. (Istanbul is one of the 30 metropolitan centers in Turkey with more than one municipality within city borders.)
The Europe Motorway () starts at Mahmutbey in Başakşehir, and runs through the district in west direction to Edirne.
Former name of the area was Azatlık. The area specialized in providing gunpowder to the Ottoman army. Later a farm was established in place of Azatlık; the farm was known as Resneli farm referring to Resneli Niyazi, a military officer from Resen, Macedonia (then a part of Ottoman Empire), who was a hero of Young Turk Revolution in 1908. Up to 2009 most of Başakşehir was a quarter in Küçükçekmece district. Then it was declared a district seat.
- "Population of province/district centers and towns/villages by districts - 2012". Address Based Population Registration System (ABPRS) Database. Turkish Statistical Institute. Retrieved 2013-02-27.
- "Area of regions (including lakes), km²". Regional Statistics Database. Turkish Statistical Institute. 2002. Retrieved 2013-03-05.
- Statistical Institute
- A page of Başakşehir citizens (Turkish)
- Mayor's page (Turkish)