# Musi Banyuasin Regency

Musi Banyuasin Regency is a regency of South Sumatra province, in Indonesia. Originally much larger, it was reduced by about 45% of its former area on 10 April 2002 by the splitting off of most of its eastern and northeastern districts to form the new Banyuasin Regency. It now has a total area of 14,265.96 km$^2$ (5,508 sq mi) and a population of 561,458 at the 2010 Census and 622,206 at the 2020 Census; the official estimate as at mid 2023 was 707,290 (comprising 362,877 males and 344,413 females).
The administrative centre of Musi Banyuasin Regency is the town of Sekayu.

## Geography

The regency, which covers fifteen percent of the area of South Sumatra Province, is located between 1.3° to 4° South latitude and from 103° to 104°40′ East longitude. It is bordered to the north by Jambi Province, to the south by the new Penukal Abab Lematang Ilir Regency, to the west by Musi Rawas Regency and North Musi Rawas Regency, and to the east by Banyuasin Regency.

## Administrative districts

As at 2010, Musi Banyuasin Regency was subdivided into eleven districts (kecamatan), but a further three districts were created in 2011 (Lawang Wetan, Babat Supat and Tungkal Jaya), and another one in 2017 (Jirak Jaya). These 15 are all listed below with their revised areas (in km$^2$) and their populations at the 2010 Census and the 2020 Census, together with the official estimates as at mid 2023. The table also includes the locations of the district administrative centres, the number of administrative villages in each district (totaling 227 rural desa and 13 urban kelurahan), and its post codes.
| Kode Wilayah | Name of District (kecamatan) | Area in km$^2$ | Pop'n Census 2010 | Pop'n Census 2020 | Pop'n Estimate mid 2023 | Admin centre | No. of villages | Post code(s) |
| 16.06.05 | Sanga Desa | 317.00 | 30,032 | 33,010 | 36,893 | Ngulak | 19 $^{(a)}$ | 30759 |
| 16.06.06 | Babat Toman | 1,291.00 | 52,640 | 36,070 | 41,253 | Babat | 13 $^{(b)}$ | 30752 |
| 16.06.04 | Batanghari Leko | 2,107.79 | 21,156 | 19,670 | 24,676 | Tanah Abang | 16 | 30755 |
| 16.06.10 | Plakat Tinggi | 247.00 | 22,043 | 26,740 | 29,502 | Sido Rahayu | 15 | 30758 |
| 16.06.13 | Lawang Wetan | 232.00 | $^{(c)}$ | 25,080 | 29,065 | Ulak Paceh | 15 | 30753 |
| 16.06.03 | Sungai Keruh | 330.12 | 40,595 | 23,350 | 26,220 | Tebing Bulang | 10 | 30751 |
| 16.06.15 | Jirak Jaya | 298.88 | $^{(d)}$ | 19,090 | 21,778 | Jirak | 12 | 30751 |
| 16.06.01 | Sekayu | 701.60 | 78,637 | 91,120 | 99,589 | Serasan Jaya | 14 $^{(e)}$ | 30711 |
| 16.06.02 | Lais | 755.53 | 52,353 | 53,460 | 57,458 | Lais | 15 | 30757 |
| 16.06.07 | Sungai Lilin (Lilin River) | 374.26 | 85,745 | 61,820 | 67,669 | Sungai Lilin | 15 $^{(f)}$ | 30750 |
| 16.06.08 | Keluang | 400.57 | 28,342 | 32,740 | 36,471 | Keluang | 14 $^{(g)}$ | 30754 |
| 16.06.14 | Babat Supat | 511.02 | $^{(h)}$ | 35,740 | 39,700 | Babat Banyuasin | 16 | 30755 |
| 16.06.09 | Bayung Lencir | 4,847.00 | 112,277 | 75,370 | 94,767 | Bayung Lencir | 23 $^{(i)}$ | 30756 |
| 16.06.11 | Lalan | 1,031.00 | 37,638 | 39,300 | 44,524 | Bandar Agung | 27 | 30758 |
| 16.06.12 | Tungkal Jaya | 821.00 | $^{(j)}$ | 49,660 | 57,725 | Peninggalan | 16 | 30756 |
| | Totals | 14,265.96 | 561,458 | 622,206 | 707,290 | Sekayu | 240 | |
Notes: (a) includes two kelurahan (Ngulak and Ngulak I). (b) includes two kelurahan (Babat and Mangun Jaya). (c) the population of Lawang Wetan District in 2010 is included in the figure for Babat Toman District, from which it was cut in 2011. (d) the population of Jirak Jaya District in 2010 is included in the figures for Sungai Keruh District, from which it was cut in 2017. (e) includes four kelurahan (Balai Agung, Kayu Ara, Serasan Jaya and Soak Baru). (f) includes 2 kelurahan (Sungai Lilin and Sungai Lilin Jaya). (g) includes one kelurahan (Keluang). (h) the population of Babat Supat District in 2010 is included in the figure for Sungai Lilin District, from which it was cut in 2011. (i) includes 2 kelurahan (Bayung Lencir and Bayung Lencir Indah). (j) the population of Tungkal Jaya District in 2010 is included in the figure for Bayung Lencir District, from which it was cut in 2011.

## Soil

Musi Banyuasin Regency consists of 4 kinds of soil:
* Organosol: along the swamp and in the plain area
* Clay Loam: see Organosol
* Alluvial: along the Musi River
* Pudzolik: in the hilly area

## Climate

Musi Banyuasin Regency has tropic and wet season with variation of rainfall between 39.00 and 297.25 mm, for the year 2007 December has highest rank of rainfalls. Rain days in 2007 tend to vary between 2.75 and 15.25 days with January having highest rank of rain days.