[6] The district includes the towns of Slim River, Behrang, Tanjung Malim and Proton City.

[7] It was given the name Muallim, the Arabic word for "teacher", because of the Sultan Idris Education University in the district.

The current District Officer of Muallim is Encik Mohamad Fitri bin Hassan.

The Muallim District is divided into three mukims (townships), which are:[6] The east and west parts of the Ulu Bernam mukim is separated by the town of Hulu Bernam, which is a part of Hulu Selangor, Selangor.

List of Muallim district representatives in the Federal Parliament (Dewan Rakyat) List of Muallim district representatives in the State Legislative Assembly of Perak