Sunkathonnur is a village in Pandavapura tehsil in district of Mandya, Karnataka, India. As per the data provided by Census of India in 2011, total population of Sunkathonnur was 2,817 which includes 1,404 males and 1,413 females. Sunkathonnur covers 626.23 ha area. Pincode of Sunkathonnur is 571434.