North Tapanuli Regency
North Tapanuli Regency is a landlocked regency in North Sumatra province, Sumatra, Indonesia. Its capital is Tarutung. The regency covers an area of 3,793.71 square kilometers and it had a population of 278,897 at the 2010 Census and 312,758 at the 2020 Census; the official estimate as of mid-2024 was 326,993.
Administrative districts
The regency is divided into fifteen districts, tabulated below with their areas and their populations at the 2010 Census and the 2020 Census, together with the official estimates as of mid-2024. The table also includes the locations of the district administrative centres, the number of administrative villages in each district, and its postcode.| Kode Wilayah | Name of District | Area in km2 | Pop'n Census 2010 | Pop'n Census 2020 | Pop'n Estimate mid 2024 | Admin centre | No. of villages | Post code |
| 12.02.11 | Parmonangan | 257.35 | 13,021 | 14,578 | 15,026 | Manalu | 14 | 22453 |
| 12.02.03 | Adiankoting | 502.90 | 13,876 | 15,109 | 15,535 | Adiankoting | 16 | 22461 |
| 12.02.04 | Sipoholon | 189.20 | 22,265 | 24,156 | 25,306 | Sipoholon | 14 | 22452 |
| 12.02.01 | Tarutung | 107.68 | 39,500 | 42,831 | 44,958 | Tarutung | 31 | 22411 -22417 |
| 12.02.02 | Siatas Barita | 92.92 | 13,063 | 14,197 | 14,703 | Simorangkir | 12 | 22417 -22419 |
| 12.02.05 | Pahae Julu | 165.90 | 11,740 | 13,494 | 14,168 | Onan Hasang | 19 | 22463 |
| 12.02.06 | Pahae Jae | 203.20 | 10,569 | 12,092 | 12,673 | Pasar Sarulla | 13 | 22465 |
| 12.02.08 | Purbatua | 191.80 | 7,164 | 8,168 | 8,469 | Parsaoran Janji Angkola | 11 | 22464 |
| 12.02.07 | Simangumban | 150.00 | 7,300 | 8,369 | 8,671 | Aek Nabara | 8 | 22466 |
| 12.02.13 | Pangaribuan | 459.25 | 26,751 | 29,765 | 31,034 | Pakpahan | 26 | 22472 |
| 12.02.14 | Garoga | 567.58 | 15,581 | 18,214 | 19,013 | Garoga Sibargot | 13 | 22473 |
| 12.02.12 | Sipahutar | 408.22 | 24,536 | 27,828 | 29,067 | Sipahutar | 25 | 22471 |
| 12.02.09 | Siborongborong | 279.91 | 44,170 | 50,641 | 53,726 | Pasar Siborongborong | 21 | 22474 |
| 12.02.10 | Pagaran | 138.05 | 16,539 | 18,795 | 19,647 | Sipiltak | 14 | 22458 |
| 12.02.15 | Muara | 79.75 | 13,182 | 14,521 | 14,997 | Hutana Nagodang | 15 | 22476 |
| Totals | 3,793.71 | 279.257 | 312,758 | 326,993 | Tarutung | 252 |
Note: including 7 of the urban kelurahan of the district's 11 kelurahan. except for the two desa of Jambur Nauli and Sihujur, which have the postcode of 22452.
Muara District is a northern near-exclave of the regency, mainly situated on the southern shore of Lake Toba and connected to Siborongborong District by a narrow strip of land.
It includes the island of Pulau Sibandang, which is situated in the lake.