 While in the middle of the regency are hills mostly formed by sedimentary rocks, in the south there is a mountain (Sanggabuana) with a height of about 1,291 metres above sea level.The regency is roughly equidistant from Jakarta and Bandung, and the two metropolitan areas have a combined home population of over 40 million people.The general population is ethnically Sundanese, with Islam adherents comprising 98.17% of the population according to the 2010 census.