The population of Sri Lanka is expected to grow by 66,000 in 2021 and reach 21,675,000 in 2022. Migration (including immigration and emigration) decreases population by 75,000 people yearly. The population density of Sri Lanka has changed from 239.8 in 1980 to 335.2 in 2019.
| Current population | 21,649,734 people at present (Sunday 25th of July 2021) | |
| Median Age | 35.6 years |
| Population density | 337.2 per km2 |
| Year | Population | Year change | Migrants | Median age | Fertility rate | Density (Ppl/km2) | Urban population |
|---|---|---|---|---|---|---|---|
| 2021 | 21,617,000 | 66,000 (0.3%) | -75,000 | 35.6 | 337 | 4,088,000 (18.9%) | |
| 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 2020 the population of Sri Lanka was 21,551,000 and the average age increased from 24.2 in 1960 to 35.3. Urban population has increased from 3,440,542 (18.4%) in 2000 to 4,088,000 (18.9%) in the current year. The population density of Sri Lanka has changed from 239.8 in 1980 to 335.2 in 2019.
| Year | Population | Year change | Migrants | Median age | Fertility rate | Density (Ppl/km2) | Urban population |
|---|---|---|---|---|---|---|---|
| 2020 | 0 | 0 (0.0%) | -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%) |
The life expectancy at birth should reach 81.2 (78.8 years for male and 83.8 years for females). Population density will go up to 331.6 people per square kilometer.
The population growth rate is 0.31% (74,000 residents, including 154,677 deaths). The demographics of Sri Lanka constitutes of 11,261,000 women and 10,356,000 men, which means there are 920 men per 1000 women. As far as age distribution goes, 30.6% of population (6,616,964) is 19 or younger, 57.8% of population (12,485,979) is between age 20 and 64 and 11.6% of population (2,514,057) is over 65.