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%).
Ethnic groups in Chad largest single group in Chad) are the Sara, about 30 percent of the population. They live in the valleys of the Chari and Logone rivers and are farmers of considerable skill. Others include the Ngambaye, Mbaye, Goulaye, Moundang, Moussei, and Massa. Ethno-linguistically, the groups may be divided into: Ethnic groups in Chad The population of Chad has numerous ethnic groups. SIL Ethnologue reports more than 130 distinct languages spoken in Chad. The 14 million Chad people belong to some 200 ethnicities, who speak numerous languages. The southern part of the country was historically the cross roads of the caravan routes