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%).
Muong people Muong people The Mường () is an ethnic group native to Vietnam; it is the country's third largest of 53 minority groups, with an estimated population of 1.26 million (based on the 2009 census and five years of population growth). The Muong people inhabit the mountainous region of northern Vietnam, concentrated in Hòa Bình Province and the mountainous districts of Thanh Hóa Province. They are most closely related to the ethnic Vietnamese (Kinh). The term "muong" of Thai origin means "district, region". To emphasize their difference from the inhabitants of the valleys and highlanders, Muong call themselves "monglong", which means