Gaddehosur is a village in Krishnarajpet tehsil in district of Mandya, Karnataka, India. As per the data provided by Census of India in 2011, total population of Gaddehosur was 684 which includes 338 males and 346 females. Gaddehosur covers 312.23 ha area. Pincode of Gaddehosur is 571605.