Brunei Darussalam with a land area of 5,765 square kilometres, has a population of approximately 325,000 people.  It has a population growth rate of 2.8 percent per annum.  According to the government's census, most of Brunei's populace is located at the Brunei/Muara district (66.0%), followed by Belait (20.2%), and Tutong (10.9%). By age group, about 33.0 percent of the population are below 15 years of age, about 64.0 percent fall under the 15 to 64 years old category, while the rest are over 65 years of age.  In terms of race distribution, Brunei indigenous communities consist of about 73.0 percent of total population, followed by the Chinese (15.0%), and others (12.0%).  The largest indigenous groups are the Malays, Kedayans, and Tutongs.