Malaysia's multi-racial society contains many ethnic groups. Malays comprise a majority of just over 50%. By constitutional definition, all Malays are Muslim. About a quarter of the population is ethnic Chinese, a group which historically played an important role in trade and business. Malaysians of Indian descent comprise about 7% of the population and include Hindus, Muslims, Buddhists, and Christians. Non-Malay indigenous groups combine to make up approximately 11% of the population.

Population density is highest in peninsular Malaysia, home to some 20 million of the country's 28 million inhabitants. The rest live on the Malaysian portion of the island of Borneo in the large but less densely-populated states of Sabah and Sarawak. More than half of Sarawak's residents and about two-thirds of Sabah's are from indigenous groups.

Nationality: Noun and adjective--Malaysian(s).
Population (2009): 28.3 million.
Annual growth rate: 2.0%.
Ethnic groups: Malay 53.3%, Chinese 26.0%, indigenous 11.8%, Indian 7.7%, others 1.2%.
Religions: Islam (60.4%), Buddhism (19.2%), Christianity (9.1%), Hinduism (6.3%), other/none (5.0%).
Languages: Bahasa Melayu (official), Chinese (various dialects), English, Tamil, indigenous.
Education: Years compulsory--6. Attendance--90.1% (primary), 60.0% (secondary). Literacy--93.5%.
Health: Infant mortality rate (2007)--6.7/1,000. Life expectancy (2007)--female 76.4 yrs., male 71.9 yrs.
Work force (10.89 million, 2007): Services--57%; industry--28% (manufacturing--19%, mining and construction--9%); agriculture--15%.