CSI Holy Trinity Church, Mallassery
- Year of the Formation : 1898
- Year of Pastorate Formation : 1984
- Total Members of the Congregation : 344
- Total Families in the Congregation : 100
- Total Land : 2 Acres
- Name of the Presbyters from the Congregation: Late Rev. P. E. Samuel, and Rev. Chandy Thomas.
CSI Holy Trinity Church, Mallassery P. O., Pathanamthitta - 689 646.