According to final results of the Census of Population and Housing, 2012, the Population of Sri Lanka is recorded as 20,271,464. Of this 3,704,470 (18.2%) living in Urban sector, 15,753,322 (77.4%) living in Rural sector and the balance 901,647 (4.4%) living in Estate sector.
The Department of Census and Statistics has been conducting decennial Censuses of Population and Housing since 1871. Census of Population and Housing 2012, was the 14th Census conducted in Sri Lanka. This Census was very important as it was the complete enumeration conducted in Sri Lanka after 31 years.
Average Annual Growth Rate of the Population was computed from 1981 to 2012 as there was no complete enumeration in between. The average annual growth rate from 1981 to 2012 is 1.1 percent. Population increase from 1981 to 2012 in terms of numbers is 5,512,689 which amount to 37.1 percent increase.
The overall sex ratio in the country was 94 males per 100 females indicates that there are more females in Sri Lankan population than males. However, sex ratio among children below 18 years is reported as 102 which indicate more males among the child population, while the corresponding figure for 60 or more population is 79 indicating more females among the older population.
Economically active population who were 15 years or more stands at 7,857,370. The corresponding figure for males and females is 5,491,129 and 2,366,241 respectively.
Total employed population is 7,335,432. The employed males and females are 5,190,697 and 2,144,735 respectively. Total unemployed population is 521,938. The unemployed males and females are 300,432 and 221,506 respectively.
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