The diocese was formed in 1986, organising the church's parishes across Wayanad and Kannur districts together with several churches from the Nilgiris district of Tamil Nadu. It has served the church's parishes in Wayanad, Nilgiris and parts of Kannur since.
Counts above reflect Orthodox-held institutions only; churches, chapels, and other properties currently under schismatic occupation are catalogued separately below and are not included in these totals.
5 districts, listed alphabetically.