The General Population Census of 2008 put Cambodia’s population at 13.4 million by March 2008. The population density is 75 per square kilometre. The male-to-female ratio is gradually normalizing after the distortions caused by 30 years of war during the last century. The average household size is 4.7 people, with 80% of the population living in rural areas. The median age in 2008 was 21 years, about four years more than in 1998.