People
Nationality: Noun and adjective--Swazi(s).
Population (2002): 1 million.
Annual growth rate (2002): 2%.
Ethnic groups: The overwhelming majority of the population is Swazi.
Religion: It is estimated that the population is 35% Protestant, 30% Zionist (indigenous), 25% Roman Catholic, 1% Islamic, with the remaining 9% divided between other beliefs.
Official languages: Siswati and English.
Education: Years compulsory--none. Attendance--65% primary and 44% secondary. Literacy--79%.
Health: Infant mortality rate (2001)--89/1,000. Life expectancy--33 years.
Work force: Agriculture and forestry--21.4%; construction--6.1%; distribution--10.5%; finance--8.3%; manufacturing--20.1%; mining and quarry--1%; services--32.6%; transport--2.9%.

People of Swaziland
The majority of the population is ethnic Swazi, mixed with a small number of Zulus and non-Africans. Traditionally Swazis have been subsistence farmers and herders, but most now work in the growing urban formal economy and in government. Some Swazis work in the mines in South Africa. Christianity in Swaziland is sometimes mixed with traditional beliefs and practices. Most Swazis ascribe a special spiritual role to the monarch.

The country's official languages are Siswati (a language related to Zulu) and English. Government and commercial business is conducted mainly in English.
source: http://www.state.gov