This area was part of Syedpur Pargana during the Mughal period before the British rule. Kathalia, Bhandaria, Bamna, Betagi, Mathbaria and Bakerganj were under the pargana through a Super of Naib. At one time Kathalia-Pirojpur was under sub-division. At that time Kathalia-Bhandaria was a constituency. Later Jhalokati subdivision was developed and then Kathalia-Jhalokati subdivision came under it and Kathalia-Rajapur was managed as a constituency. At present there was a Jalthana in Amua Union under Kathalia Upazila, among the administrative offices there were food warehouses, hospitals, Sub-Registrar's office at Amua. But later the sub-registry office was shifted to Kathalia Sadar and the food warehouse and hospital existed at Amua. The Jalthana was shifted to Kathalia as there was a nuisance of thieves in the area. In this context, Kathalia police station was established in 1936. Upazila was formed in 1986.
