| Source | UN (World Population Prospects 2019) |
| Date | 23 Aug 2021 |
As of 2021, the population of American Samoa is projected at 55.1 thousand, down by 0.17% compared with 55.2 in 2020. American Samoa is ranked 210th in terms of population and 213th in terms of population growth rate.
48.73 thousand people are living in urban areas, which is 87.17% of American Samoa population. American Samoa is ranked 46th in terms of urbanization.
| Year | Population | Growth (%) |
|---|---|---|
| 1950 | 18,941 | - |
| 1955 | 19,748 | -0.05 |
| 1960 | 20,127 | 1.51 |
| 1965 | 23,675 | 3.61 |
| 1970 | 27,362 | 2.49 |
| 1975 | 30,045 | 1.52 |
| 1980 | 32,648 | 2.53 |
| 1985 | 39,521 | 4.15 |
| 1990 | 47,351 | 3.17 |
| 1995 | 53,158 | 2.03 |
| 2000 | 57,816 | 1.34 |
| 2005 | 59,557 | -0.21 |
| 2010 | 56,084 | -1.04 |
| 2015 | 55,806 | 0.03 |
| 2016 | 55,739 | -0.12 |
| 2017 | 55,617 | -0.22 |
| 2018 | 55,461 | -0.28 |
| 2019 | 55,312 | -0.27 |
| 2020 | 55,197 | -0.21 |
| 2021 | 55,103 | -0.17 |
| Year | Population | Urbanization | ||
|---|---|---|---|---|
| Urban | Rural | growth rate (%) | Urban (%) | |
| 1950 | 11,699 | 7,241 | - | 61.769 |
| 1955 | 12,613 | 7,089 | 0.56 | 64.020 |
| 1960 | 13,251 | 6,762 | 2.08 | 66.211 |
| 1965 | 16,072 | 7,448 | 4.26 | 68.334 |
| 1970 | 19,209 | 8,083 | 3.14 | 70.384 |
| 1975 | 21,657 | 8,275 | 2.05 | 72.354 |
| 1980 | 24,125 | 8,332 | 3.11 | 74.330 |
| 1985 | 30,515 | 8,726 | 5.01 | 77.762 |
| 1990 | 38,076 | 8,962 | 4.05 | 80.948 |
| 1995 | 45,086 | 7,782 | 3.02 | 85.280 |
| 2000 | 50,956 | 6,565 | 1.85 | 88.587 |
| 2005 | 52,083 | 7,035 | -0.36 | 88.100 |
| 2010 | 48,735 | 6,902 | -1.16 | 87.594 |
| 2015 | 48,449 | 7,088 | 0.12 | 87.238 |
| 2020 | 48,630 | 7,169 | 0.13 | 87.153 |
| 2021 | 48,727 | 7,172 | 0.20 | 87.169 |