Deli Serdang Regency
Deli Serdang Regency is a regency in the Indonesian province of North Sumatra. It surrounds the city of Medan, and also borders to the west the city of Binjai, which is effectively a bedroom community for Medan. The entire regency lies within the Medan metropolitan area. It occupies an area of 2,592.40 km2. Its administrative center is Lubuk Pakam, which is located approximately 30 km east of Medan. The national census of 2000 recorded 1,573,987 people, but by 2010 the regency's population increased by 13.76% to 1,790,431, and at the 2020 Census the total was 1,931,441. The official estimate as at mid 2024 was 2,080,408, of whom 64.7% lived in the western 53.8% of the area, surrounding Medan city, while 35.3% lived in the eastern 46.2% of the area. Medan's Kualanamu International Airport is located in this regency, 23 kilometres east of downtown Medan.
Deli Serdang is the most populous regency in Indonesia outside the island of Java, with 2,080,408 inhabitants in mid 2024. Its population is comparable to the U.S state of Nebraska.
Neighbouring areas
The external boundaries of the regency are with:- To the north: the Langkat Regency and the Strait of Malacca.
- To the south: the Karo Regency and Simalungun Regency.
- To the east: the Serdang Bedagai Regency and the Strait of Malacca.
- To the west: the Karo Regency, Langkat Regency and the city of Binjai.
Administrative districts
The regency is divided into twenty-two districts, tabulated below with their areas and their 2010 Census and 2020 Census populations, and the official estimates as of mid 2024. The table also includes the locations of the district administrative centres, the number of administrative villages within 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 desa | No. of kelu- rahan | Post code |
| 12.07.21 | Patumbak | 43.55 | 88,961 | 97,994 | 106,762 | Patumbak | 8 | - | 20361 |
| 12.07.22 | Deli Tua | 8.14 | 60,624 | 59,292 | 62,274 | Deli Tua | 3 | 3 | 20355 |
| 12.07.23 | Sunggal | 92.52 | 244,187 | 241,359 | 254,477 | Sunggal | 17 | - | 20351 |
| 12.07.24 | Hamparan Perak | 302.56 | 150,054 | 163,521 | 180,027 | Hamparan Perak | 20 | - | 20374 |
| 12.07.25 | Labuhan Deli | 123.91 | 60,190 | 67,129 | 69,373 | Helvetia | 5 | - | 20373 |
| 12.07.26 | Percut Sei Tuan | 190.29 | 384,672 | 402,468 | 424,156 | Tembung | 18 | 2 | 20371 |
| 12.07.03 | Sibolangit | 159.89 | 19,654 | 19,980 | 21,946 | Bandar Baru | 30 | - | 20357 |
| 12.07.04 | Kutalimbaru | 182.21 | 35,870 | 36,238 | 40,893 | Kutalimbaru | 14 | - | 20354 |
| 12.07.05 | Pancur Batu | 121.52 | 84,919 | 93,470 | 101,515 | Pancur Batu | 25 | - | 20353 |
| 12.07.06 | Namo Rambe | 64.13 | 36,651 | 39,697 | 43,248 | Namo Rambe | 36 | - | 20356 |
| 12.07.07 | Biru-Biru | 106.75 | 34,020 | 39,083 | 41,607 | Biru-Biru | 17 | - | 20358 |
| Total Western half | 1,395.47 | 1,199,802 | 1,260,231 | 1,346,278 | 193 | 5 | |||
| 12.07.01 | Gunung Meriah | 95.24 | 2,472 | 3,193 | 3,247 | Gunung Meriah | 12 | - | 20583 |
| 12.07.20 | Sinembah Tanjung Muda Hulu | 225.70 | 12,333 | 13,554 | 15,168 | Tiga Juhar | 20 | - | 20582 |
| 12.07.08 | Sinembah Tanjung Muda Hilir | 209.75 | 30,563 | 33,159 | 35,608 | Talun Kenas | 15 | - | 20363 |
| 12.07.09 | Bangun Purba | 120.61 | 21,550 | 24,375 | 26,018 | Bangun Purba | 24 | - | 20581 |
| 12.07.19 | Galang | 129.09 | 61,508 | 70,136 | 75,932 | Galang | 28 | 1 | 20585 |
| 12.07.02 | Tanjung Morawa | 132.52 | 192,759 | 223,450 | 243,565 | Tanjung Morawa | 25 | 1 | 20362 |
| 12.07.27 | Batang Kuis | 44.64 | 56,270 | 65,075 | 74,429 | Batang Kuis | 11 | - | 20372 |
| 12.07.32 | Pantai Labu | 85.83 | 43,135 | 49,167 | 54,697 | Pantai Labu | 19 | - | 20553 |
| 12.07.33 | Beringin | 56.94 | 52,415 | 60,711 | 67,904 | Beringin | 11 | - | 20552 |
| 12.07.28 | Lubuk Pakam | 33.33 | 80,847 | 88,576 | 94,178 | Lubuk Pakam | 6 | 7 | 20511 -20518 |
| 12.07.31 | Pagar Merbau | 63.28 | 36,777 | 39,814 | 43,384 | Pagar Merbau | 16 | - | 20551 |
| Total Eastern half | 1,196.93 | 590,629 | 671,210 | 734,130 | 187 | 9 |
Notes: Deli Tua, Deli Tua Barat and Deli Tua Timur. Kenangan and Kenangan Baru. Galang Kota. Pekan Tanjung Morawa.
Cemara, Lubuk Pakam I-II, Lubuk Pakam Pekan, Lubuk Pakam III, Paluh Kemiri, Petapahan and Syahmad.
file:Tanjung Morawa Toll Plaza, Medan.JPG|thumb|right|Tanjung Morawa toll gate, Deli Serdang Regency