This Regency is administratively composed of thirteen districts (kecamatan), listed below with their areas (in km2) and their populations at the 2010[2] and 2020[3] Censuses, together with the official estimates as at mid 2023.

(c) comprises 5 kelurahan (Air Gading, Batu Kuning, Saung Naga, Talang Jawa and Tanjung Agung) and 7 desa.

Since 2008 to mid-2013 archaeologists have found 72 skeletons of mongoloid race with prediction 3,000 years of age and the excavation is still running.

Some of the skeletons are displayed in Si Pahit Lidah (Bitter Tongue) Museum near Putri (Princess) Cave.

Archeologists estimate that the cave has been used for 15 millenia, with traces of three different cultures, the latest being 3,500 years ago (Bronze Age) with metal tools similar to those found in Dong son sites (Vietnam).