Salapian is a subdistrict of Langkat Regency. Javanese people are in the majority (56% as of 2007) with 37% Karo. As against Karo Regency, the vast majority of Karo in Salapian are Muslims - the population is 81% Muslim and 13% Protestant. In all parts of Salapian, there is a Muslim majority, although it varies between villages.