The regency's motto is "Ruhui Rahayu", and this is also shared by another Indonesian province (East Kalimantan).

[1] The administrative centre of the regency is at the town of Rantau (in Bungur District).

Tapin Regency is composed of twelve districts (kecamatan), listed below with their present areas and their 2010[2] and 2020 Census[3] populations, together with the official estimates as at mid 2023.

[1] The table includes the locations of the district administrative centres, the number of administrative villages in each district (a total of 126 rural desa and 9 urban kelurahan), and its post code.

Notes: (a) including 3 kelurahan - Binuang, Karangan Putih and Raya Belanti.