Catholics and Christian faithful working in Punalur Paper Mills, Railway and Rubber Estates along with the farmers were the early community of the church.Schools, orphanage, mission centers and other institutions start building gradually to meet the growing demands of the community of vibrant ethnic culture.Christian Missionaries serving among the people made thatched sheds on the hillock near the market and Kallada River.During the Second World War the First Fathers had to go back, entrusting the church work to the diocesan clergy of Quilon (Kollam).St Mary's Cathedral complex is located on west bank hillock of Kallada River, north of Kollam-Shenkottai railway route, east of Paper Mill Road and near to Punalur railway Station at coordinates 9°01′22″N 76°55′15″E / 9.022766°N 76.920796°E / 9.022766; 76.920796