Kokkamangalam is situated midway between Cochin and Kumarakom. It is on the western shore of Vembanad Lake, 5 km east of the town of Cherthala, which has the nearest railway station.
Local attractions include picnic boating at Kokkamangalam. The long view of "Vembanad Lakeexpans" with green margin of coconut palms is also considered a must see. Kokkamangalam village itself is a place of traditional coconut processing cottage industry and numerous small coir spinning units. Thannirmukkom saltwater barrier, Pathiramanal Island, Kumarakom bird sanctuary are among the places of interest nearby. The Cochin International Airport is 70 kilometers from Kokkamangalam.
St. Thomas sailed to Kokkamangalam where he preached the gospel for about a year. 1600 people embraced Christian faith through him according to the narration in "Rampan Pattu", an ancient form of Christian folk-song prevalent in Kerala. He formed a Christian community at Kokkamangalam and enshrined a Cross for the faithful. The people of Kokkamangalam and nearby places venerate St. Thomas as their beloved heavenly patron.