Mardingding is an isolated district of Karo Regency in North Sumatra. It lies 95 kilometres by broken road from Kabanjahe, the administrative centre of the Regency. The condition of the roads are so poor that some residents have planted bananas and cassava in the roads.
It is not to be confused with Lake Mardingding, or Mardinding village, in Tiganderket district.
- Lau Soulu, pop. 1,634 (2007)
- Kuta Pengkih, pop. 1,258
- Rimo Bunga, pop. 266
- Lau Mulgap, pop. 1,290
- Tanjung Pamah, pop. 610
- Mardingding (capital), pop 4,822 (inclusive of Lau Gurut and Bukit Makmur)
- Lau Kusumpat, pop. 1,195
- Bandar Purba, pop. 1,181
- Lau Pengulu, pop. 873
- Lau Pakam, pop. 2,764
- Lau Garut, pop. see Mardingding
- Bukit Makmur, pop. see Mardingding
The total population in 2007 was 15,893, with a population density of 59.5 people/square kilometre, living in 4,583 homes (3.47/dwelling). 100% of the population were Indonesian citizens. Religious affilitations: 3,849 Muslims, 3,729 Catholics, 7,873 Protestants, 137 Hindus or Buddhists, 305 others. There are 8 mosques, 3 mushollas, 69 churches and 1 temple.
94% of primary school age children were attending school, and 89% of high school age children. 73% of the population work in agriculture. The major crop was maize, with 14,671 hectares cultivated, and also rice, with 3,097 hectares wet rice and 585 hectares dry rice cultivated. In addition, 2,354 hectares of candlenut, and 635 hectares of cocoa were cultivated. Only a few, cottage, industries operate in Mardingding.
There are 19 junior schools, 3 middle schools, and 0 high schools in Mardingding subdstrict.
It is situated 280 metres above sea level and has an area of 267.11 square kilometres.