Lawngtlai District is situated in the southernmost part of the state of Mizoram. It was declared district on 18th September, 1998. It was previously under Chhimtuipui District.  It has its distinct feature for housing one of the highest minority population concentrated areas in India in the western belt of the district. The district is cut-off by Lunglei District and Siaha District into two parts. The eastern part is located in the eastern side of Chhimtuipui River, the biggest river in the state and it comprises Sangau Sub-Division. The western part comprises Lawngtlai Sub-Division (Sadar) and Chawngte Sub-Division. The civil administration is taken up by Deputy Commissioner, assisted by one Additional Deputy Commissioner (ADC), three Sub-Divisional Officers (SDOs) and four Sub-Deputy Commissioners (SDCs). The administrative sub-division of the district consists of Sangau, Chawngte and Lawngtlai (Sadar) Sub-Divisions.