Tarangnan is a in the province of, . According to the, it has a population of people. Tarangnan is situated on the western coast of Samar Island, to the south-east of the ancient town of Bangahon and to the north of Samar's capital Catbalogan. Tarangnan is found near the former ancient pueblo Tinago, the first town to be Christianized and was made a center or cabecera. Tarangnan has its own municipal hospital which was inaugurated in 1982, with a 10-bed capacity. It caters primarily to health services. It is augmented by Rural Health Unit extension workers. It has daycare centers which also cater the needs of pre-schoolers.