The population of Sri Lanka is expected to grow by 74,000 in 2020 and reach 21,617,000 in 2021. Migration (including immigration and emigration) decreases population by 75,000 people yearly. On average there are 305,981 births and 157,301 deaths in Sri Lanka per year. Rate of natural increase is approximately 0.69 percent per year. The population density of Sri Lanka has changed from 239.8 in 1980 to 334.1 in 2018.
| Current population | 21,567,455 people at present (Tuesday 31st of March 2020) | |
| Median Age | 35.3 years |
| Life expectancy | 76.0 years | |
| Population density | 336.2 per km2 |
| Year | Population | Year change | Migrants | Median age | Fertility rate | Density (Ppl/km2) | Urban population |
|---|---|---|---|---|---|---|---|
| 2020 | 21,551,000 | 74,000 (0.3%) | -75,000 | 35.3 | 1.99 | 336 | 4,046,000 (18.8%) |
| 2019 | 0 | 0 (0.0%) | -90,000 | 35.0 | 2.01 | 335 | 4,007,000 (18.7%) |
| 2018 | 0 | 0 (0.0%) | -90,000 | 34.7 | 2.02 | 334 | 3,970,000 (18.6%) |
| 2017 | 0 | 0 (0.0%) | -90,000 | 34.4 | 2.04 | 333 | 3,936,000 (18.5%) |
| 2016 | 0 | 0 (0.0%) | -90,000 | 34.1 | 2.05 | 332 | 3,902,836 (18.4%) |
| 2015 | 20,966,000 | 195,000 (0.9%) | -90,000 | 33.8 | 2.06 | 330 | 3,848,519 (18.4%) |
| 2010 | 20,119,000 | 151,000 (0.8%) | -96,954 | 32.4 | 2.20 | 322 | 3,686,002 (18.3%) |
| 2005 | 19,373,000 | 145,000 (0.8%) | -104,013 | 31.5 | 2.28 | 311 | 3,561,145 (18.4%) |
| 2000 | 18,655,000 | 123,000 (0.7%) | -89,896 | 30.3 | 2.24 | 300 | 3,440,542 (18.4%) |
| 1995 | 18,074,000 | 162,000 (0.9%) | -92,337 | 28.9 | 2.29 | 291 | 3,344,413 (18.5%) |
| 1990 | 17,078,000 | 237,000 (1.4%) | -51,156 | 27.7 | 2.48 | 276 | 3,170,701 (18.6%) |
| 1985 | 15,831,000 | 248,000 (1.6%) | -27,488 | 26.5 | 2.90 | 258 | 2,948,840 (18.6%) |
| 1980 | 14,747,000 | 275,000 (1.9%) | -79,100 | 25.7 | 3.41 | 240 | 2,769,339 (18.8%) |
| 1975 | 13,496,000 | 212,000 (1.6%) | -47,500 | 25.0 | 3.78 | 219 | 2,629,426 (19.5%) |
| 1970 | 12,514,000 | 262,000 (2.1%) | -29,000 | 24.2 | 4.34 | 199 | 2,441,982 (19.5%) |
| 1965 | 11,164,000 | 261,000 (2.3%) | -7,700 | 24.0 | 4.96 | 177 | 1,967,767 (17.6%) |
| 1960 | 9,896,000 | 272,000 (2.7%) | -9,500 | 24.2 | 5.54 | 158 | 1,626,012 (16.4%) |
In 2019 the population of Sri Lanka was 21,477,000 and the average age increased from 24.2 in 1960 to 35.0. Urban population has increased from 3,440,542 (18.4%) in 2000 to 4,046,000 (18.8%) in the current year. The population density of Sri Lanka has changed from 239.8 in 1980 to 334.1 in 2018.
| Year | Population | Year change | Migrants | Median age | Fertility rate | Density (Ppl/km2) | Urban population |
|---|---|---|---|---|---|---|---|
| 2020 | 21,551,000 | 74,000 (0.3%) | -75,000 | 35.3 | 1.99 | 336 | 4,046,000 (18.8%) |
| 2025 | 21,806,000 | 37,000 (0.2%) | -75,000 | 36.8 | 1.93 | 341 | 4,278,000 (19.6%) |
| 2030 | 21,908,000 | 11,000 (0.1%) | -75,000 | 38.3 | 1.88 | 342 | 4,582,000 (20.9%) |
| 2035 | 21,907,000 | -7,000 (0.0%) | -75,000 | 39.5 | 1.85 | 343 | 4,977,000 (22.7%) |
| 2040 | 21,807,000 | -31,000 (-0.1%) | -75,000 | 40.6 | 1.82 | 341 | 5,455,000 (25.0%) |
| 2045 | 21,568,000 | -61,000 (-0.3%) | -75,000 | 41.6 | 1.80 | 338 | 5,935,000 (27.5%) |
| 2050 | 21,184,000 | -89,000 (-0.4%) | -75,000 | 42.6 | 1.79 | 332 | 6,391,000 (30.2%) |
Total Sri Lanka population should reach 21,551,000 by 2020 and should decrease to 21,184,000 people by year 2050. The life expectancy at birth should reach 81.2 (78.8 years for male and 83.8 years for females). Population density will go down to 331.6 people per square kilometer.
The population growth rate is 0.34% (83,000 residents, including 152,004 deaths). The demographics of Sri Lanka constitutes of 11,219,000 women and 10,332,000 men, which means there are 921 men per 1000 women. As far as age distribution goes, 30.9% of population (6,661,414) is 19 or younger, 57.9% of population (12,467,254) is between age 20 and 64 and 11.2% of population (2,420,177) is over 65.