The diocese comprises following six districts Madurai, Dindigul, Virudhunagar, Theni, Sivagangai, and Ramanathapuram in Tamil Nadu state.
The cathedral church of the diocese is situated at Narimedu, Madurai.
The Cathedral church at Madurai is the biggest Cathedral in South East Asia, sprawling over a four-acre site which is built in Gothic style combined with architectural elegance, Tamil culture and theological significance.
It was dedicated on the Easter Day, 30 March 1986 by the then CSI moderator, Rt.Rev.Dr.
agaram, Madurai C.S.I church of divine Glory, Manamadurai,