Sedibeng District Municipality (SDM) covers the entire southern part of Gauteng Province and consists of three local municipalities: Emfuleni, Midvaal and Lesedi. While Midvaal occupies almost half of the area of Sedibeng District, over 80% of the population lives in Emfuleni.
The eastern areas of the district are mainly agricultural or rural. The main urban areas are Vereeniging and Vanderbijlpark, as well as the Evaton / Sebokeng residential complex, are concentrated in the western part of the district, in Emfuleni. Smaller urban concentrations are found in Meyerton, in Midvaal, and in Heidelberg / Ratanda in Lesedi.
Sedibeng is an integral part of Gauteng Province, which accounts for 33% of the national GDP. Sedibeng is one of the five most important centres of high value mass production manufacturing in South Africa. In 2011, manufacturing contributed 32% to the local economy. This, in turn, is dominated by the fabricated metal (ArcelorMittal) and chemical (SASOL) sectors. Agriculture and tourism present opportunities for further development and growth.
Most economically residents are employed in manufacturing, followed by social services, trade and business. Others are employed in professional and managerial occupations. Only 2% are at present employed in the tourism sector.