Sasthamangalam is a place in the city of Thiruvananthapuram (Trivandrum), Kerala, India. It is just 6 km from the Central Railway Station, and is a popular residential area in Thiruvananthapuram city. It is known for the Sasthamangalam Mahadevar (Shiva) Temple, one of the four major temples regularly visited by the Kings of Travancore, in the past. The place where the king used to park his chariot is now a road, called Rathapurakkunnu road. The River Killi enters Sasthamangalam from Mannammoola, and flows to Maruthankuzhi, on her way to join River Karamana. Sasthamangalam is a meeting place for roads running from Vattiyoorkavu, Vellayambalam, Edapazhinji and Peroorkada. There is a post office in the junction, and private courier services are available from Blue Dart, DTDC, Professional Couriers, etc. DHL is available 1.4 km away at Vellayambalam. Sree Ramakrishna Mission Hospital, Raja Kesavadas NSS High School, Tandem Group of Institutions, etc., are the other landmarks in the area. The nearest Police Stations are in Peroorkada and Napier Museum. Though not a shopping centre, you might possible find everything you need for a normal household in the area. There are rows of shop, mostly bakeries, groceries, vegetable & fruits, hotels, office stationery, Cobblers, Auto-parts, Mechanics, Hardware, Cyber-cafes, Communication (cellular), and a lot of medical shops and clinical laboratories (owing to the proximity to the Mission Hospital).
Indian Army camp at Pangode and the Central Reserve Police camp at Oolampara fall within a 2 km radius, each, from the junction.
Major Bank branches are of State Bank of Travancore, Canara Bank, South Indian Bank, Vijaya Bank, etc.