Sarlahi District is located in the southeastern part of Nepal, within the Madhesh Province. It is bordered by Sindhuli District to the north and Dhanusa District to the east. The district is known for its diverse culture and agricultural activities, with many residents engaged in farming. The district's administrative center is Malangawa, which serves as a hub for local governance and services. Sarlahi is characterized by its flat terrain and fertile land, making it suitable for growing crops like rice, wheat, and sugarcane. The region also has various ethnic communities, contributing to its rich cultural heritage.