Kottapuram Diocese has nearly 45 parishes (including Sub-stations). Most of them are steeped in traditions and also have important significance. St. Thomas, the Apostle, St. Francis Xavier, St. John De Britto, Fr. Constantine Beschi, Fr. Arnose and other eminent Scholars joined in the history of the diocese. For administrative purpose the diocese divided into 3 districts viz. District - I, II & III.