Tojo Una-Una Regency
Tojo Una-Una Regency is a regency of Central Sulawesi, Indonesia. The administrative centre is at Ampana town, on the Sulawesi 'mainland'. While the Regency includes a considerable area on the eastern peninsula of Sulawesi, it also includes the Togian Islands in the Gulf of Tomini. The total area covers 5,721.51 km2 and the population was 137,810 at the 2010 Census and 163,829 at the 2020 Census; the official estimate as at mid 2024 was 170,815.
History
On 18 December 2003, Tojo Una-Una Regency was created out of the former north-eastern districts of Poso Regency.Administration
At the time of the 2010 Census, the Tojo Una-Una Regency was divided into nine districts. Subsequent to 2010, three additional districts have been created - Batudaka, Ratolindo and Talatako. These 12 districts are tabulated below with their areas and their populations at the 2010 and 2020 Censuses, together with the official estimates as at mid 2024. The table also includes the locations of the district administrative centres, the number of villages in each district, and its post code.| 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 |
| 72.09.07 | Tojo Barat | 1,092.27 | 11,354 | 12,992 | 13,339 | Tombiano | 13 | 94680 |
| 72.09.08 | Tojo | 1,065.48 | 12,460 | 13,928 | 14,171 | Uekuli | 16 | 94681 |
| 72.09.06 | Ulubongka | 1,767.11 | 15,654 | 18,272 | 18,905 | Marowo | 18 | 94682 |
| 72.09.04 | Ampana Tete | 796.02 | 22,367 | 27,614 | 29,197 | Tete A | 20 | 94684 |
| 72.09.05 | Ampana Kota | 175.42 | 40,299 | 20,854 | 22,534 | Ampana | 10 | 94683 |
| 72.09.10 | Ratolindo | 61.88 | 28,735 | 29,866 | Sumoli | 10 | 94683 - 94695 | |
| Total of | Sulawesi mainland | 4,958.18 | 102.134 | 122,395 | 128,012 | 87 | ||
| 72.09.01 | Una-Una | 146.16 | 12,437 | 8,236 | 8,395 | Wakai | 11 | 94690 |
| 72.09.11 | Batudaka | 151.91 | 5,796 | 5,933 | Molowagu | 9 | 94690 & 94691 | |
| 72.09.02 | Togean | 229.51 | 9,099 | 10,734 | 11,151 | Lebitii | 16 | 94686 |
| 72.09.03 | Walea Kepulauan | 67.60 | 10,293 | 5,568 | 5,621 | Popoliii | 9 | 94694 |
| 72.09.09 | Walea Besar | 84.51 | 3,847 | 4,629 | 4,846 | Pasokani | 8 | 94693 |
| 72.09.12 | Talatako | 83.64 | 6,471 | 6,857 | Kaliai | 6 | 94692 | |
| Total of | Togean Islands | 763.33 | 35,676 | 41,434 | 42,803 | 59 |
Notes: Ampana Town District comprises 6 kelurahan and 4 desa.
The 2010 Census population of Ratolindo District is included in the figure for Ampana Kota District, from which it was cut out.
Ratolindo District comprises 6 kelurahan and 4 desa.
The 2010 Census population of Batudaka District is included in the figure for Una-Una District, from which it was cut out.
The 2010 Census population of Talatako District is included in the figure for Walea Kepulauan District, from which it was cut out.
Dive sites
The best place to do diving is Una-Una volcanic island.Based on Badan Koordinasi Survei dan Pemetaan Nasional or Coordinating Agency for Surveys and Mapping, there are 33 dive sites disperses from north to south beaches of the Togian Islands with fringing reefs, barrier reefs, patch reefs and atolls. The area has the third most biodiversity in the world and is a series of Bunaken National Marine Park and Raja Ampat Islands.