The population of Sri Lanka is expected to grow by 83,000 in 2019 and reach 21,551,000 in 2020. Migration (including immigration and emigration) decreases population by 90,000 people yearly. On average there are 310,953 births and 154,677 deaths in Sri Lanka per year. Rate of natural increase is approximately 0.73 percent per year. The population density of Sri Lanka has changed from 239.8 in 1980 to 332.9 in 2017.
| Current population | 21,530,321 people at present (Friday 20th of September 2019) | |
| Median Age | 35.0 years |
| Life expectancy | 75.8 years | |
| Population density | 335.2 per km2 |
| Year | Population | Year change | Migrants | Median age | Fertility rate | Density (Ppl/km2) | Urban population |
|---|---|---|---|---|---|---|---|
| 2019 | 21,477,000 | 83,000 (0.4%) | -90,000 | 35.0 | 2.01 | 335 | 4,007,000 (18.7%) |
| 2018 | 21,394,000 | 92,000 (0.4%) | -90,000 | 34.7 | 2.02 | 334 | 3,970,000 (18.6%) |
| 2017 | 21,302,000 | 99,000 (0.5%) | -90,000 | 34.4 | 2.04 | 333 | 3,936,000 (18.5%) |
| 2016 | 21,203,000 | 237,000 (1.1%) | -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 2018 the population of Sri Lanka was 21,394,000 and the average age increased from 24.2 in 1960 to 34.7. Urban population has increased from 3,440,542 (18.4%) in 2000 to 4,007,000 (18.7%) in the current year. The population density of Sri Lanka has changed from 239.8 in 1980 to 332.9 in 2017.
| 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 up to 331.6 people per square kilometer.
The population growth rate is 0.39% (92,000 residents, including 149,284 deaths). The demographics of Sri Lanka constitutes of 11,172,000 women and 10,305,000 men, which means there are 922 men per 1000 women. As far as age distribution goes, 31.2% of population (6,700,824) is 19 or younger, 58.0% of population (12,445,922) is between age 20 and 64 and 10.8% of population (2,321,664) is over 65.