The population of Stung Treng constitutes just 0.7% of Cambodia’s population. The population density is 7 people per square kilometre, which is nine times less than the national density. As the population is low and the province is endowed with natural resources, the immigration rate is very high. This fact has been proven by the population census in 1998, which shows that 19.4% of the province’s population has migrated from outside, of which male migrants constitute 55%. The most commonly stated reasons for immigration were moving with family, followed by searching for livelihood.
Similar with other provinces, the female population is higher than the male population. The result of the census in 1998 demonstrates that 50.5% of the population is female. In Stung Treng, about 79.4% of the population are involved in the agriculture sector. The secondary and tertiary sectors account for 2.4% and 18.2% respectively. There are 54,488 male and 55,217 female with a total of 109,705person.