Rokan Hilir Regency
Rokan Hilir is a regency of Riau Province, on Sumatra island, Indonesia. It occupies the lower part of the catchment area of the Rokan River, and has an area of 8,851.59 km². It had a population of 553,216 at the 2010 Census and 643,224 at the 2015 Census; the latest official estimate was 700,893. The administrative centre of the Rokan Hilir Regency is located at Bagansiapiapi.
Administrative districts
As at 2010, the regency was divided into thirteen districts, but two additional districts were created by splitting of the Kubu and Bangko districts respectively. These are listed below with their areas and populations at the 2010 Census:| Name | Area in sq.km. | Population Census 2010 | Administreative Centre |
| Tanah Putih | 1,915.23 | 57,638 | Sedinginan |
| Pujud | 984.90 | 63,861 | Pujud |
| Tanah Putih Tanjung Melawan | 198.39 | 12,066 | Melayu Besar |
| Rantau Kopar | 231.13 | 5,636 | Rantau Kopar |
| Bagan Sinembah | 847.35 | 131,862 | Bagan Batu |
| Simpang Kanan | 445.55 | 25,865 | Simpang Kanan |
| Kubu | 385.36 | 38,329 | Teluk Merbau |
| Pasir Limau Kapas | 669.63 | 33,405 | Panipahan |
| Kubu Babusalam | 675.70 | Rantau Panjangkiri | |
| Bangko | 475.26 | 81,984 | Bagansiapiapi |
| Sinaboi | 335.48 | 11,081 | Sinaboi |
| Batu Hampar | 284.31 | 7,213 | Batayan |
| Pekaitan | 465.30 | Pedamaran | |
| Rimba Melintang | 235.48 | 32,162 | Rimba Melintang |
| Bangko Pusako | 732.52 | 52,114 | Bangko Kanan |
| Totals | 8,851.59 | 553,216 | Bagansiapiapi |
Notes: included in the population figure for Kubu district from which it was cut.
included in the population figure for Bangko district from which it was cut.
Towns with significant populations
- Bagansiapiapi
- Bagan Batu
- Panipahan
- Ujung Tanjung
- Pulau Halang