The population growth rate is 2.5 percent per year, more than double the average global pace, and a Burundian woman has on average 6.3 children, nearly triple the international fertility rate.
Many Burundians have migrated to other countries as a result of the civil war. In 2006, the United States accepted approximately 10,000 Burundian refugees.
Burundi remains an overwhelmingly rural society, with just 13% of the population living in urban areas in 2013. The population density of around 315 people per square kilometer (753 per sq mi) is the second highest in Sub-Saharan Africa. Roughly 85% of the population are of Hutu ethnic origin, 15% are Tutsi, and fewer than 1% are indigenous Twa/Pygmies.Burundi has the fifth highest total fertility rate in the world, at 6.08 children born/woman (2012 estimates).
The national language of Burundi is Kirundi. The official languages of Burundi are Kirundi and French. Swahili is also spoken. Education for deaf individuals uses American Sign Language, introduced by the deaf American missionary Andrew Foster. No other languages are spoken natively in any significant numbers.