Bettadahosur 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 Bettadahosur was 382 which includes 199 males and 183 females. Bettadahosur covers 236.92 ha area. Pincode of Bettadahosur is 571814.