The latest officially reported population of Sierra Leone was 8,819,794 in 2025 vs 101,598,527 people in Vietnam in 2025. In 2026, based on the adjusted UN estimation, the current Sierra Leone's population is 9,090,531 people compared to 102,486,146 in Vietnam.
Population statistics:
- Vietnam's population is 11.3 times bigger than Sierra Leone's.
- Sierra Leone is ranked the 100th most populous country in the world, while Vietnam is the 16th.
- The countries together account for 1.34% of the world: 0.11% for Sierra Leone vs 1.23% for Vietnam.
- For the last 10 years, Sierra Leone has had an average growth rate of +2.29% per year vs +0.94% in Vietnam.
- Since 2006, the population of Sierra Leone has increased from 5.62M people to 9.09M (61.6% growth), while Vietnam has grown from 82.2M to 102M (24.7% growth).
Sierra Leone vs Vietnam: population by year and forecast
| Year | Population | |
|---|---|---|
Sierra Leone
|
Vietnam
|
|
| 2100 | 16,107,087 | 92,225,380 |
| 2099 | 16,121,940 | 92,721,469 |
| 2098 | 16,135,035 | 93,212,742 |
| 2097 | 16,149,905 | 93,688,693 |
| 2096 | 16,160,672 | 94,163,950 |
| 2095 | 16,169,304 | 94,626,063 |
| 2094 | 16,168,902 | 95,083,879 |
| 2093 | 16,173,609 | 95,543,293 |
| 2092 | 16,170,778 | 96,000,019 |
| 2091 | 16,163,901 | 96,459,165 |
| 2090 | 16,154,165 | 96,922,871 |
| 2089 | 16,142,526 | 97,384,434 |
| 2088 | 16,128,775 | 97,843,001 |
| 2087 | 16,112,585 | 98,308,755 |
| 2086 | 16,085,549 | 98,773,008 |
| 2085 | 16,064,212 | 99,233,927 |
| 2084 | 16,040,563 | 99,695,401 |
| 2083 | 16,006,923 | 100,162,677 |
| 2082 | 15,970,872 | 100,634,653 |
| 2081 | 15,930,880 | 101,104,469 |
| 2080 | 15,892,665 | 101,568,526 |
| 2079 | 15,850,728 | 102,030,723 |
| 2078 | 15,801,450 | 102,480,219 |
| 2077 | 15,750,408 | 102,928,253 |
| 2076 | 15,695,310 | 103,358,352 |
| 2075 | 15,635,345 | 103,783,177 |
| 2074 | 15,580,279 | 104,197,814 |
| 2073 | 15,512,655 | 104,606,950 |
| 2072 | 15,442,481 | 105,005,673 |
| 2071 | 15,370,747 | 105,384,777 |
| 2070 | 15,293,426 | 105,757,144 |
| 2069 | 15,212,664 | 106,110,195 |
| 2068 | 15,124,069 | 106,454,379 |
| 2067 | 15,028,190 | 106,794,625 |
| 2066 | 14,931,295 | 107,126,965 |
| 2065 | 14,833,794 | 107,442,675 |
| 2064 | 14,736,872 | 107,744,261 |
| 2063 | 14,638,180 | 108,038,461 |
| 2062 | 14,525,736 | 108,322,712 |
| 2061 | 14,420,068 | 108,590,617 |
| 2060 | 14,307,451 | 108,842,045 |
| 2059 | 14,194,972 | 109,087,333 |
| 2058 | 14,077,124 | 109,320,301 |
| 2057 | 13,957,197 | 109,529,799 |
| 2056 | 13,832,494 | 109,715,196 |
| 2055 | 13,702,508 | 109,886,647 |
| 2054 | 13,576,231 | 110,035,740 |
| 2053 | 13,440,929 | 110,156,643 |
| 2052 | 13,299,910 | 110,253,026 |
| 2051 | 13,152,910 | 110,321,289 |
| 2050 | 13,006,688 | 110,344,733 |
| 2049 | 12,863,637 | 110,339,565 |
| 2048 | 12,712,671 | 110,296,602 |
| 2047 | 12,566,944 | 110,211,618 |
| 2046 | 12,411,042 | 110,090,837 |
| 2045 | 12,254,651 | 109,926,260 |
| 2044 | 12,088,895 | 109,731,512 |
| 2043 | 11,928,393 | 109,497,595 |
| 2042 | 11,767,372 | 109,225,525 |
| 2041 | 11,599,942 | 108,919,674 |
| 2040 | 11,428,331 | 108,594,542 |
| 2039 | 11,259,845 | 108,237,715 |
| 2038 | 11,097,180 | 107,861,117 |
| 2037 | 10,928,754 | 107,463,482 |
| 2036 | 10,757,928 | 107,058,359 |
| 2035 | 10,582,918 | 106,630,705 |
| 2034 | 10,411,088 | 106,189,495 |
| 2033 | 10,238,503 | 105,745,684 |
| 2032 | 10,059,929 | 105,283,013 |
| 2031 | 9,881,109 | 104,809,957 |
| 2030 | 9,705,485 | 104,314,150 |
| 2029 | 9,529,493 | 103,819,556 |
| 2028 | 9,358,412 | 103,300,347 |
| 2027 | 9,177,288 | 102,759,746 |
| 2026 | 8,998,902 | 102,197,177 |
| 2025 | 8,819,794 | 101,598,527 |
| 2024 | 8,642,022 | 100,987,686 |
| 2023 | 8,460,512 | 100,352,192 |
| 2022 | 8,276,807 | 99,680,655 |
| 2021 | 8,094,602 | 98,935,098 |
| 2020 | 7,912,558 | 98,079,191 |
| 2019 | 7,731,991 | 97,173,776 |
| 2018 | 7,554,563 | 96,237,319 |
| 2017 | 7,379,299 | 95,176,977 |
| 2016 | 7,205,328 | 94,000,117 |
| 2015 | 7,037,655 | 92,823,254 |
| 2014 | 6,876,385 | 91,679,578 |
| 2013 | 6,714,051 | 90,573,104 |
| 2012 | 6,551,080 | 89,510,356 |
| 2011 | 6,387,251 | 88,468,314 |
| 2010 | 6,222,714 | 87,455,152 |
| 2009 | 6,055,646 | 86,460,018 |
| 2008 | 5,894,722 | 85,175,788 |
| 2007 | 5,749,352 | 83,633,375 |
| 2006 | 5,624,466 | 82,167,897 |
| 2005 | 5,501,712 | 81,088,313 |
| 2004 | 5,355,717 | 80,338,971 |
| 2003 | 5,177,687 | 79,563,777 |
| 2002 | 4,971,435 | 78,772,224 |
| 2001 | 4,692,716 | 77,969,361 |
| 2000 | 4,423,611 | 77,154,011 |
| 1999 | 4,318,043 | 76,287,452 |
| 1998 | 4,295,785 | 75,299,660 |
| 1997 | 4,253,716 | 74,226,889 |
| 1996 | 4,199,210 | 73,156,447 |
| 1995 | 4,179,179 | 72,049,940 |
| 1994 | 4,173,105 | 70,854,391 |
| 1993 | 4,157,130 | 69,586,384 |
| 1992 | 4,166,366 | 68,260,337 |
| 1991 | 4,246,267 | 66,891,775 |
| 1990 | 4,196,828 | 65,504,552 |
| 1989 | 4,034,037 | 64,147,348 |
| 1988 | 3,934,517 | 62,843,228 |
| 1987 | 3,829,718 | 61,584,651 |
| 1986 | 3,728,380 | 60,347,048 |
| 1985 | 3,638,438 | 59,060,622 |
| 1984 | 3,558,758 | 57,706,067 |
| 1983 | 3,481,646 | 56,337,921 |
| 1982 | 3,408,183 | 55,011,289 |
| 1981 | 3,338,940 | 53,738,141 |
| 1980 | 3,272,089 | 52,490,101 |
| 1979 | 3,207,499 | 51,378,211 |
| 1978 | 3,145,517 | 50,249,552 |
| 1977 | 3,085,354 | 48,954,872 |
| 1976 | 3,028,820 | 47,684,931 |
| 1975 | 2,974,657 | 46,482,903 |
| 1974 | 2,920,459 | 45,413,537 |
| 1973 | 2,866,955 | 44,409,861 |
| 1972 | 2,814,388 | 43,429,168 |
| 1971 | 2,763,222 | 42,449,276 |
| 1970 | 2,712,286 | 41,475,230 |
| 1969 | 2,661,365 | 40,582,096 |
| 1968 | 2,611,532 | 39,734,609 |
| 1967 | 2,562,384 | 38,895,080 |
| 1966 | 2,514,638 | 38,024,836 |
| 1965 | 2,468,666 | 37,129,656 |
| 1964 | 2,424,390 | 36,201,563 |
| 1963 | 2,382,258 | 35,249,101 |
| 1962 | 2,342,242 | 34,288,560 |
| 1961 | 2,304,227 | 33,409,059 |
| 1960 | 2,268,356 | 32,531,933 |
Data sources: United Nations | World Population Prospects (2026–2100, retrieved 2026-07-08); World Bank | Health (1960–2025, retrieved 2026-07-08).
GeoRank.org/population/sierra-leone/vietnam | CC BY 
From 2006 to 2016, the population of Sierra Leone increased by 1,580,862 people (a 28.1% growth), while Vietnam gained 11,832,220 people (a 14.4% growth).
For the next 10 years, from 2016 to 2026, Sierra Leone gained 1,885,203 people (a 26.2% growth), while Vietnam's population increased by 8,486,029 people (a 9.03% growth).
Sierra Leone was ranked 105th most populous country in 2006 and is 100th in 2026. Vietnam was ranked 15th in 2006 and ranked 16th now.
The UN's World Population Prospects forecasts that in 24 years (in 2050) Sierra Leone's population will grow by 43.1% to 13,006,688 people with a rank change from 100th to 91st. The population of Vietnam will increase by 7.67% to 110,344,733 people and will still be ranked 16th.
Sierra Leone is projected to reach its peak in 2093 at 16.2M people compared to the peak of 110M people in 2050 for Vietnam.
Population growth rate by year
| Year | Growth rate | |
|---|---|---|
|
Sierra Leone
|
Vietnam
|
|
| 2100 | -0.09% | -0.54% |
| 2099 | -0.08% | -0.53% |
| 2098 | -0.09% | -0.51% |
| 2097 | -0.07% | -0.5% |
| 2096 | -0.05% | -0.49% |
| 2095 | 0.002% | -0.48% |
| 2094 | -0.03% | -0.48% |
| 2093 | 0.02% | -0.48% |
| 2092 | 0.04% | -0.48% |
| 2091 | 0.06% | -0.48% |
| 2090 | 0.07% | -0.47% |
| 2089 | 0.09% | -0.47% |
| 2088 | 0.1% | -0.47% |
| 2087 | 0.17% | -0.47% |
| 2086 | 0.13% | -0.46% |
| 2085 | 0.15% | -0.46% |
| 2084 | 0.21% | -0.47% |
| 2083 | 0.23% | -0.47% |
| 2082 | 0.25% | -0.46% |
| 2081 | 0.24% | -0.46% |
| 2080 | 0.26% | -0.45% |
| 2079 | 0.31% | -0.44% |
| 2078 | 0.32% | -0.44% |
| 2077 | 0.35% | -0.42% |
| 2076 | 0.38% | -0.41% |
| 2075 | 0.35% | -0.4% |
| 2074 | 0.44% | -0.39% |
| 2073 | 0.45% | -0.38% |
| 2072 | 0.47% | -0.36% |
| 2071 | 0.51% | -0.35% |
| 2070 | 0.53% | -0.33% |
| 2069 | 0.59% | -0.32% |
| 2068 | 0.64% | -0.32% |
| 2067 | 0.65% | -0.31% |
| 2066 | 0.66% | -0.29% |
| 2065 | 0.66% | -0.28% |
| 2064 | 0.67% | -0.27% |
| 2063 | 0.77% | -0.26% |
| 2062 | 0.73% | -0.25% |
| 2061 | 0.79% | -0.23% |
| 2060 | 0.79% | -0.22% |
| 2059 | 0.84% | -0.21% |
| 2058 | 0.86% | -0.19% |
| 2057 | 0.9% | -0.17% |
| 2056 | 0.95% | -0.16% |
| 2055 | 0.93% | -0.14% |
| 2054 | 1.01% | -0.11% |
| 2053 | 1.06% | -0.09% |
| 2052 | 1.12% | -0.06% |
| 2051 | 1.12% | -0.02% |
| 2050 | 1.11% | 0.005% |
| 2049 | 1.19% | 0.04% |
| 2048 | 1.16% | 0.08% |
| 2047 | 1.26% | 0.11% |
| 2046 | 1.28% | 0.15% |
| 2045 | 1.37% | 0.18% |
| 2044 | 1.35% | 0.21% |
| 2043 | 1.37% | 0.25% |
| 2042 | 1.44% | 0.28% |
| 2041 | 1.5% | 0.3% |
| 2040 | 1.5% | 0.33% |
| 2039 | 1.47% | 0.35% |
| 2038 | 1.54% | 0.37% |
| 2037 | 1.59% | 0.38% |
| 2036 | 1.65% | 0.4% |
| 2035 | 1.65% | 0.42% |
| 2034 | 1.69% | 0.42% |
| 2033 | 1.78% | 0.44% |
| 2032 | 1.81% | 0.45% |
| 2031 | 1.81% | 0.48% |
| 2030 | 1.85% | 0.48% |
| 2029 | 1.83% | 0.5% |
| 2028 | 1.97% | 0.53% |
| 2027 | 1.98% | 0.55% |
| 2026 | 2.03% | 0.59% |
| 2025 | 2.06% | 0.6% |
| 2024 | 2.15% | 0.63% |
| 2023 | 2.22% | 0.67% |
| 2022 | 2.25% | 0.75% |
| 2021 | 2.3% | 0.87% |
| 2020 | 2.34% | 0.93% |
| 2019 | 2.35% | 0.97% |
| 2018 | 2.38% | 1.11% |
| 2017 | 2.41% | 1.25% |
| 2016 | 2.38% | 1.27% |
| 2015 | 2.35% | 1.25% |
| 2014 | 2.42% | 1.22% |
| 2013 | 2.49% | 1.19% |
| 2012 | 2.56% | 1.18% |
| 2011 | 2.64% | 1.16% |
| 2010 | 2.76% | 1.15% |
| 2009 | 2.73% | 1.51% |
| 2008 | 2.53% | 1.84% |
| 2007 | 2.22% | 1.78% |
| 2006 | 2.23% | 1.33% |
| 2005 | 2.73% | 0.93% |
| 2004 | 3.44% | 0.97% |
| 2003 | 4.15% | 1% |
| 2002 | 5.94% | 1.03% |
| 2001 | 6.08% | 1.06% |
| 2000 | 2.44% | 1.14% |
| 1999 | 0.52% | 1.31% |
| 1998 | 0.99% | 1.45% |
| 1997 | 1.3% | 1.46% |
| 1996 | 0.48% | 1.54% |
| 1995 | 0.15% | 1.69% |
| 1994 | 0.38% | 1.82% |
| 1993 | -0.22% | 1.94% |
| 1992 | -1.88% | 2.05% |
| 1991 | 1.18% | 2.12% |
| 1990 | 4.04% | 2.12% |
| 1989 | 2.53% | 2.08% |
| 1988 | 2.74% | 2.04% |
| 1987 | 2.72% | 2.05% |
| 1986 | 2.47% | 2.18% |
| 1985 | 2.24% | 2.35% |
| 1984 | 2.21% | 2.43% |
| 1983 | 2.16% | 2.41% |
| 1982 | 2.07% | 2.37% |
| 1981 | 2.04% | 2.38% |
| 1980 | 2.01% | 2.16% |
| 1979 | 1.97% | 2.25% |
| 1978 | 1.95% | 2.64% |
| 1977 | 1.87% | 2.66% |
| 1976 | 1.82% | 2.59% |
| 1975 | 1.86% | 2.35% |
| 1974 | 1.87% | 2.26% |
| 1973 | 1.87% | 2.26% |
| 1972 | 1.85% | 2.31% |
| 1971 | 1.88% | 2.35% |
| 1970 | 1.91% | 2.2% |
| 1969 | 1.91% | 2.13% |
| 1968 | 1.92% | 2.16% |
| 1967 | 1.9% | 2.29% |
| 1966 | 1.86% | 2.41% |
| 1965 | 1.83% | 2.56% |
| 1964 | 1.77% | 2.7% |
| 1963 | 1.71% | 2.8% |
| 1962 | 1.65% | 2.63% |
| 1961 | 1.58% | 2.7% |
Data sources: United Nations | World Population Prospects (2026–2100, retrieved 2026-07-08); World Bank | Health (1961–2025, retrieved 2026-07-08).
GeoRank.org/population/sierra-leone/vietnam | CC BY
In 2025, the population of Sierra Leone grew by 2.06%, while Vietnam's population grew by 0.6%.
Live population counters
|
Sierra Leone
|
Vietnam
|
|
|---|---|---|
| Current population |
9090531
|
102486146
|
| Population rank | 100/197 | 16/197 |
| Percent of world population | 0.11% | 1.23% |
| One net population change |
2.96 minutes
|
51.8 seconds
|
| One birth every |
2.02 minutes
|
23.3 seconds
|
| One death every |
7.41 minutes
|
47 seconds
|
| Daily growth/decline | +487 | +1,674 |
| Annual growth/decline | +177,772 | +610,841 |
| Annual growth/decline rate | +2.06% | +0.6% |
| Population growth rate rank | 47/197 | 122/197 |
| One migration net change every |
46.6 minutes
|
10.9 minutes
|
| Annual migration change | -11,309 | -48,171 |
| Net migration rank | 136/196 | 174/196 |
| Foreign-born residents | 49,997 | 326,418 |
| Foreign-born residents rank | 151/195 | 95/195 |
| Foreign-born share of population | 0.6% | 0.3% |
| Foreign-born share rank | 174/195 | 185/195 |
Natural population change vs migration
| Year | Population change | |||
|---|---|---|---|---|
|
Sierra Leone
|
Vietnam
|
|||
| Natural | Migration | Natural | Migration | |
| 2025 | - | -11,309 | - | -48,171 |
| 2024 | 189,234 | -11,000 | 684,393 | -59,645 |
| 2023 | 188,788 | -4,000 | 727,955 | -81,789 |
| 2022 | 186,625 | -4,000 | 775,914 | -78,977 |
| 2021 | 183,326 | -1,544 | 799,593 | -5,418 |
| 2020 | 181,015 | 1,292 | 924,004 | -6,457 |
| 2019 | 181,068 | -2,238 | 895,262 | -2,051 |
| 2018 | 178,772 | -2,741 | 882,977 | 96,650 |
| 2017 | 173,259 | 1,234 | 1,001,833 | 139,245 |
| 2016 | 168,784 | 4,657 | 1,045,094 | 167,652 |
| 2015 | 162,275 | -356 | 1,145,903 | -4,888 |
| 2014 | 160,137 | 485 | 1,151,221 | -4,894 |
| 2013 | 161,265 | 2,773 | 1,071,570 | -4,979 |
| 2012 | 160,915 | 988 | 1,063,741 | -4,851 |
| 2011 | 158,858 | 6,895 | 1,029,859 | -4,602 |
| 2010 | 155,338 | 7,983 | 1,005,559 | -4,443 |
| 2009 | 152,669 | 18,145 | 1,007,778 | -18,560 |
| 2008 | 149,855 | 1,182 | 1,008,141 | 571,113 |
| 2007 | 145,740 | -6,042 | 981,689 | 523,784 |
| 2006 | 144,127 | -34,052 | 943,041 | 482,399 |
| 2005 | 137,234 | -1,805 | 942,084 | -208,337 |
| 2004 | 132,661 | 23,897 | 985,438 | -220,458 |
| 2003 | 130,312 | 69,185 | 1,001,470 | -216,062 |
| 2002 | 126,429 | 86,578 | 991,427 | -193,766 |
| 2001 | 116,647 | 227,791 | 985,610 | -177,586 |
| 2000 | 110,754 | 83,013 | 966,894 | -144,298 |
| 1999 | 102,295 | -84,926 | 925,519 | -15,010 |
| 1998 | 103,906 | -76,766 | 959,016 | 106,091 |
| 1997 | 105,433 | -48,437 | 1,028,116 | 52,382 |
| 1996 | 104,140 | -52,110 | 1,108,686 | -48,235 |
| 1995 | 100,885 | -112,857 | 1,203,666 | -51,147 |
| 1994 | 101,486 | -77,371 | 1,291,534 | -53,012 |
| 1993 | 103,317 | -95,476 | 1,370,365 | -72,931 |
| 1992 | 103,251 | -129,565 | 1,419,952 | -65,285 |
| 1991 | 105,477 | -238,965 | 1,459,311 | -76,829 |
| 1990 | 100,778 | 131,587 | 1,449,157 | -57,221 |
| 1989 | 98,298 | -5,079 | 1,423,622 | -101,113 |
| 1988 | 96,344 | 9,470 | 1,370,108 | -84,361 |
| 1987 | 94,235 | 9,558 | 1,359,481 | -128,095 |
| 1986 | 90,902 | 7,992 | 1,407,957 | -164,183 |
| 1985 | 88,869 | -7,873 | 1,453,954 | -124,910 |
| 1984 | 87,072 | -8,708 | 1,477,448 | -97,339 |
| 1983 | 84,628 | -8,783 | 1,453,913 | -97,706 |
| 1982 | 82,457 | -11,379 | 1,407,959 | -110,901 |
| 1981 | 80,111 | -12,699 | 1,358,500 | -109,259 |
| 1980 | 77,932 | -11,641 | 1,321,595 | -74,791 |
| 1979 | 75,992 | -13,095 | 1,314,563 | -337,597 |
| 1978 | 74,130 | -13,073 | 1,286,991 | -6,592 |
| 1977 | 71,663 | -12,399 | 1,259,315 | 49,655 |
| 1976 | 69,506 | -15,686 | 1,232,608 | -1,733 |
| 1975 | 67,560 | -13,058 | 1,175,181 | -2,010 |
| 1974 | 65,357 | -11,473 | 1,000,505 | -34,940 |
| 1973 | 62,443 | -9,322 | 1,061,707 | -19,937 |
| 1972 | 60,279 | -8,267 | 921,524 | -1,920 |
| 1971 | 58,484 | -8,162 | 963,259 | 76,961 |
| 1970 | 56,513 | -4,957 | 905,902 | 1,997 |
| 1969 | 54,768 | -4,485 | 878,359 | 0 |
| 1968 | 53,126 | -3,743 | 815,116 | 1,489 |
| 1967 | 51,734 | -2,819 | 862,071 | 394 |
| 1966 | 49,486 | -2,911 | 876,283 | 1,769 |
| 1965 | 47,223 | -1,851 | 913,761 | -1,438 |
| 1964 | 45,487 | -2,308 | 950,219 | -6,328 |
| 1963 | 43,569 | -2,480 | 961,067 | 0 |
| 1962 | 41,603 | -2,658 | 960,046 | 0 |
| 1961 | 40,022 | -2,947 | 798,978 | 0 |
| 1960 | 38,192 | -3,528 | 955,268 | 0 |
Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08).
GeoRank.org/population/sierra-leone/vietnam | CC BY
Over the last 10 years, 99% of the population change in Sierra Leone is from natural causes (a gain of 1,793,146 people) and 1.03% is from migration (a loss of 18,696 people). In Vietnam 98.2% is from natural causes (a gain of 8,882,928 people) and 1.82% is from migration (a gain of 164,322 people).
As of 2024, 49,997 residents or 0.6% of the population were not native-born in Sierra Leone, compared to 326,418 people or 0.3% in Vietnam.
Biggest cities by population
|
Sierra Leone
|
|
|---|---|
| City | Population |
| Freetown | 951K |
| Bo | 234K |
| Kenema | 188K |
|
Vietnam
|
|
|---|---|
| City | Population |
| Ho Chi Minh | 14M |
| Hanoi | 8.72M |
| Can Tho | 3.21M |
| Da Nang | 2.82M |
| Haiphong | 2.12M |
| Bien Hoa | 1.1M |
| Hue | 653K |
| Bac Ninh | 520K |
| Hai Duong | 507K |
| Vinh | 490K |
Compare countries by 7 more topics
Population differences between Sierra Leone and Vietnam
|
Sierra Leone
|
Vietnam
|
|
|---|---|---|
| Life expectancy | 62.3 years | 75 years |
| Average age | 24.6 years | 34.9 years |
| Median age | 20.7 years | 34.4 years |
| Male:Female ratio | 49.9:50.1 | 49:51 |
| Fertility rate | 3.7 births per woman | 1.9 births per woman |
| Population density | 323 ppl/mi² | 844 ppl/mi² |
Population map with other countries
Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08); United Nations | World Population Prospects (1960–2026, retrieved 2026-07-08); U.S. Census Bureau (1960–2025, retrieved 2026-07-08); Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-07-08).
GeoRank.org/population/sierra-leone/vietnam | CC BY
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Data sources:
- World Bank | Health (1960–2025, retrieved 2026-07-08)
- United Nations | World Population Prospects (1960–2100, retrieved 2026-07-08)
- U.S. Census Bureau (1960–2025, retrieved 2026-07-08)
- Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-07-08)
- Wikidata (2026, retrieved 2026-07-08)
Creative Commons Attribution (CC BY) — you’re free to copy, share, remix, adapt, and use even commercially as long as you give appropriate credit and clearly indicate if you made changes. Other sources may be subject to different license terms.