The diocesan headquarters are located in unincorporated Fort Bend County, Texas, with a postal address of Beasley,[3] a suburban city in Texas 40 miles from downtown Houston.

The southwest diocese covers several churches in the U.S. states, and Canada.

The Diocese was formed by order number 145/2009 signed by the Catholicos of the Apostolic Throne of St. Thomas and Malankara Metropolitan, Didymus I on 1 April 2009.

In October 2022, Thomas Ivanios was appointed as the permanent Diocesan Metropolitan bringing an end to the temporary administrative set up that lasted for over five years.

Service Book of the Holy Qurbono: English with Commentary & Malayalam with Transliteration.

A Study of the Experience of the Unspeakable and Its Manifestations in Selected Mystic Saints and Holy Persons in the Malankara Orthodox Syrian Church.