 The eparchy of Mananthavady comprises the civil districts of Wayanad and parts of the civil districts of Malapuram and Kannur in Kerala, the Nilgiris district in Tamil Nadu and the districts of Chickmangalore, Hassan, Mandya, Mysore, and Chamarajnagar in Karnataka.Of these, the district of Mandya is entrusted to the pastoral care of the Missionary Society of St. Thomas (MST), the district of Hassan to the Congregation of the Carmelites of Mary Immaculate (CMI) and the district of Chickmangalore to the Norbertine Fathers (O.Pream).The Catholic population is mainly concentrated in Kerala, while Karnataka and Tamil Nadu regions are considered Diaspora.