# Serdang Bedagai Regency

Serdang Bedagai Regency is a regency on the east coast of North Sumatra Province of Indonesia, facing Malaysia, with 95 km of coastline and covering an area of 1,904.37 square kilometres, divided into seventeen districts (kecamatan), in turn subdivided into 243 villages. Its administrative centre is the town of Sei Rampah. The regency surrounds the independent city of Tebing Tinggi, and also contains a district (kecamatan) by the same name (Tebing Tinggi District surrounds the city on its west side, while Tebing Syahbandar District surrounds the city on its east side). The name “Serdang Bedagai” was derived from the two Sultanates which formerly existed in the Region; they were Serdang Sultanate and Padang Bedagai Sultanate. The population was 592,922 at the 2010 Census, while the 2020 Census produced a total of 657,490; the official estimate as at mid 2023 was 685,074.

## Location

To the north is the Malacca Straits, to the west is Deli Serdang Regency (surrounding Medan), to the south and southeast is Simalungun Regency, and to the east are the Buaya River and Ular River bordering Batubara Regency, which was formed in 2006 from the western part of the Asahan Regency.

## Administration

The Serdang Bedagai Regency is divided administratively into seventeen districts (kecamatan), tabulated below with their areas 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 numbers of administrative villages in each district (totaling 237 rural desa and 6 urban kelurahan), and its post code.
| 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 |
| 12.18.10 | Kotarih | 76.14 | 7,975 | 9,169 | 9,576 | Kotarih | 11 | 20982 |
| 12.18.11 | Silinda | 56.74 | 8,332 | 9,514 | 10,119 | Silinda | 9 | 20983 |
| 12.18.17 | Bintang Bayu | 95.59 | 10,581 | 12,511 | 12,747 | Bitang Bayu | 19 | 20984 |
| 12.18.09 | Dolok Masihul | 243.48 | 48,241 | 52,705 | 55,518 | Pekan Dolok Masihul | 28 $^{(a)}$ | 20991 |
| 12.18.12 | Serbajabi | 50.69 | 19,560 | 21,759 | 22,218 | Serbajabi | 10 | 20995 |
| 12.18.08 | Sipispis | 145.26 | 31,617 | 33,826 | 35,082 | Sipispis | 20 | 20992 |
| 12.18.07 | Dolok Merawan | 120.60 | 17,029 | 17,976 | 19,147 | Dolok Merawan | 17 | 20993 |
| 12.18.13 | Tebing Tinggi | 182.29 | 40,253 | 41,162 | 41,681 | Tebing Tinggi | 14 | 20999 |
| 12.18.16 | Tebing Syahbandar | 120.30 | 32,191 | 33,585 | 33,792 | Paya Pasir | 10 | 20998 |
| 12.18.06 | Bandar Khalipah | 116.00 | 24,774 | 25,857 | 26,742 | Bandar Khakipah | 5 | 20994 |
| 12.18.05 | Tanjung Beringin | 74.17 | 36,864 | 42,142 | 44,730 | Tanjung Beringin | 8 | 20996 |
| 12.18.04 | Sei Rampah | 198.90 | 63,379 | 71,366 | 75,061 | Sei Rampah | 17 | 20995 |
| 12.18.15 | Sei Bamban | 72.26 | 42,791 | 46,043 | 47,282 | Sei Bamban | 10 | 20995 |
| 12.18.03 | Teluk Mengkudu (Mengkudu Bay) | 66.91 | 41,118 | 48,334 | 50,906 | Sialang Buah | 12 | 20997 |
| 12.18.02 | Perbaungan | 111.62 | 99,936 | 112,153 | 116,506 | Simpang III Pekan | 28 $^{(b)}$ | 20985 |
| 12.18.14 | Pegajahan | 93.12 | 26,859 | 30,206 | 32,016 | Pegajahan | 13 $^{(c)}$ | 20986 |
| 12.18.01 | Pantai Cermin | 80.30 | 42,883 | 49,182 | 51,951 | Pantai Cermin | 12 | 20987 |
| | Totals | 1,904.37 | 594,383 | 657,490 | 685,074 | | 243 | |
Notes: (a) including one kelurahan (Pekan Dolok Masihul). (b) comprising four kelurahan (Batang Terap, Melati I, Simpang Tiga Pekan and Tualang) and 24 desa. (c) including one kelurahan (Melati Kebun).