The Overberg District Municipality is a district municipality that governs the Overberg region in the Western Cape province of South Africa. It is di…The Overberg District Municipality is a district municipality that governs the Overberg region in the Western Cape province of South Africa. It is divided into four local municipalities and includes the major towns of Grabouw, Caledon, Hermanus, Bredasdorp and Swellendam. The municipal area covers 12,241 square kilometres and had in 2007 an estimated population of 212,787 people in 60,056 households.