Demographics of Indonesia local ethnic languages are the first language of most Indonesians and are still important. Indonesia demographic composition has a relatively young population. According to 2011 estimate, total median age of Indonesia is 28.2 years. Total Fertility Rate (TFR) (Wanted Fertility Rate) and Crude Birth Rate (CBR): Total fertility rate (TFR) and population over age 60 by region as of 2010: Source: "UN World Population Prospects" There are over 300 ethnic groups in Indonesia. 95% of those are of Native Indonesian ancestry. Javanese is the largest group with 100 million people (42%), followed by Sundanese who number nearly 40 million (15%).
Dusun people Dusun people Dusun is the collective name of a tribe or ethnic and linguistic group in the Malaysian state of Sabah of North Borneo. Due to similarities in culture and language with the Kadazan ethnic group, a new unified term called "Kadazan-Dusun" was created. Collectively, they form the largest ethnic group in Sabah. Other similarly termed, yet non-related groups can also be found in Brunei and the Central Kalimantan, Indonesia. Both Bruneian Dusuns (Sang Jati Dusun) and Dusuns of Indonesia (Barito Dusun) are not related to the Kadazan-Dusun people, instead the Bruneian Dusuns are culturally, historically and linguistically shared a