Tiruvalla Taluk (alternately spelt Thiruvalla) Taluk is a Tehsil ( Sub-District ) of Pathanamthitta district in the Indian state of Kerala. The headquarters of the Taluk is in Tiruvalla town, which lies almost in the centre of the Taluk. It has an area of 152 sq. km and a population of 223,503. All three major rivers of the Central Travancore region- the Pamba, the Manimala, and the Achenkovil flow through the Taluk.