The diocese mainly covers the pastorates in Warangal, Nalgonda, East Godavari and Khammam districts and also has churches in Odissha state.

Azariah was the first Indian to be consecrated a bishop in the Anglican Communion[2] and was a leader in the Christian evangelistic movement in South Asia during the early twentieth century.

A few years later, it was enlarged by the addition of the Dummugudem district, in which the Church Missionary Society (CMS) was working.

In 1920, a resolution of the Episcopal Synod placed all of the districts of both the CMS and the Society for the Propagation of the Gospel (SPG) in the Telugu country under the jurisdiction of the Bishop of Dornakal.

The present Diocese of Dornakal includes a large portion of the Krishna district, part of the Godavari districts, parts of the Kurnool and Kadapa districts to the south served by the SPG, the areas in the Hyderabad State served by the Indian Missionary Society of Tinnevelly (IMST), the Singareni Mission, the Khammamett Mission, and the recently formed Dornakal Diocesan Mission, which started in the Mulag Taluq.