 The regency fully encircles the administratively separated city of Sukabumi.Covering an area of 4,162.41 km2, the regency is the largest regency in West Java and the second largest regency on Java after the Banyuwangi Regency in East Java.The regency has a population of 2,523,992 (as of 2019) with a large part of it living in the northeastern part of the regency that encircles Sukabumi City, south of Mount Gede.