Humbang Hasundutan Regency is a landlocked regency in North Sumatra province of Indonesia. In the east of the regency, Baktiraja District stretches along a short part of the southern shore of Lake Toba in North Sumatra. The regency covers an area of , and it had a population of 171,650 at the 2010 census and 197,751 at the 2020 census;Badan Pusat Statistik, Jakarta, 2021. the official estimate as of mid 2025 was 209,460 (comprising 105,101 males and 104,359 females).Badan Pusat Statistik, Jakarta, 27 February 2026, Kabupaten Humbang Hasundutan Dalam Angka 2026 (Katalog-BPS 1102001.1215) Its seat is the town of Dolok Sanggul. To the north is Samosir Regency and Pakpak Bharat Regency, to the east is North Tapanuli Regency, and to the west and south is Central Tapanuli Regency, and beyond the latter the Indian Ocean.
Administrative districts The regency is divided administratively into ten districts (), tabulated below with their areas and their populations at the 2010 census Penduduk Menurut Wilayah, Daerah Perkotaan/Perdesaan, dan Jenis Kelamin, HUMBANG HASUNDUTAN, Tahun 2010 and the 2020 census, together with the official estimates as of mid 2025.Badan Pusat Statistik, Jakarta, 27 February 2026, Kabupaten Humbang Hasundutan Dalam Angka 2026 (Katalog-BPS 1102001.1215) The table also includes the locations of the district administrative centres, the number of administrative villages (desa and kelurahan) in each district and its post code.
KodeWilayah Name ofDistrict(kecamatan) Areain km2 Pop'ncensus2010 Pop'ncensus2020 Pop'nestimatemid 2025Admin centre No.ofvillagesPostcode 12.16.09 Pakkat 381.6823,02924,11825,281Pakkat Hauagong2222455 12.16.08 Onan Ganjang 222.569,83511,15211,703Onan Ganjang1222454 12.16.07 Sijamapolang 140.185,1126,1456,346Bonan Dolok1022459 12.16.06 Dolok Sanggul 209.3043,19751,08755,266Pasar Doloksanggul2822457 12.16.05 Lintong Nihuta 181.2629,06633,41235,301Sibuntuon Parpea2222475 12.16.04 Paranginan 47.7812,48714,81515,529Sihonongan1122477 12.16.03 Baktiraja (a) 22.326,8247,5807,875Marbun Toruan722457 12.16.02 Pollung 327.3617,61521,41522,670Hutapaung1322457 12.16.01 Parlilitan 727.7517,31619,88720,999Sihotang Hasugian Tonga2022456 12.16.10 Tarabintang 242.527,1698,1408,490Tarabintang922451 Totals 2,502.71171,650197,751209,460Doloksanggul154
Notes (a) including Simamora Island (Pulau Simamora) in Lake Toba.
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