8 893 640 (2008) • 16,215 /km² (41,997 /sq mi) • 9 696 939 ( 4th ) ( 2008 june ) • 1.09 [1] Language(s) Telugu , Urdu Mayor Election due Commissioner N K Singh Founded 1592 Parliamentary constituency Hyderabad, Secunderabad, malkajgiri(new) Planning Agency GHMC Codes • Pincode • Telephone •