Ottasekharamangalam is a village in Neyyattinkara tehsil in district of Thiruvananthapuram, Kerala, India. As per the data provided by Census of India in 2011, total population of Ottasekharamangalam was 19,345 which includes 9,322 males and 10,023 females. Ottasekharamangalam covers 1814 ha area. Pincode of Ottasekharamangalam is 695125.