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Population in Belgium compared to Sierra Leone: Trends, Charts, Rankings

Updated on by Georank

The latest officially reported population of Belgium was 11,941,781 in 2025 vs 8,819,794 people in Sierra Leone in 2025. In 2026, based on the adjusted UN estimation, the current Belgium's population is 11,967,185 people compared to 9,090,531 in Sierra Leone.

Population statistics:

  • Belgium's population is 1.32 times bigger than Sierra Leone's.
  • Belgium is ranked the 83rd most populous country in the world, while Sierra Leone is the 100th.
  • The countries together account for 0.25% of the world: 0.14% for Belgium vs 0.11% for Sierra Leone.
  • For the last 10 years, Belgium has had an average growth rate of +0.58% per year vs +2.29% in Sierra Leone.
  • Since 2006, the population of Belgium has increased from 10.5M people to 12M (13.5% growth), while Sierra Leone has grown from 5.62M to 9.09M (61.6% growth).

Belgium vs Sierra Leone: population by year and forecast

Belgium
Factual

Projection
Sierra Leone
Factual

Projection
1x
Year Population
Belgium Sierra Leone
2100 11,250,862 16,107,087
2099 11,269,247 16,121,940
2098 11,287,433 16,135,035
2097 11,303,694 16,149,905
2096 11,319,229 16,160,672
2095 11,335,187 16,169,304
2094 11,351,692 16,168,902
2093 11,367,258 16,173,609
2092 11,383,419 16,170,778
2091 11,397,881 16,163,901
2090 11,412,370 16,154,165
2089 11,426,889 16,142,526
2088 11,442,238 16,128,775
2087 11,457,739 16,112,585
2086 11,472,102 16,085,549
2085 11,485,745 16,064,212
2084 11,499,703 16,040,563
2083 11,513,055 16,006,923
2082 11,527,480 15,970,872
2081 11,539,632 15,930,880
2080 11,553,646 15,892,665
2079 11,566,656 15,850,728
2078 11,580,982 15,801,450
2077 11,593,809 15,750,408
2076 11,605,311 15,695,310
2075 11,617,264 15,635,345
2074 11,630,340 15,580,279
2073 11,643,635 15,512,655
2072 11,656,916 15,442,481
2071 11,670,459 15,370,747
2070 11,686,541 15,293,426
2069 11,702,841 15,212,664
2068 11,720,297 15,124,069
2067 11,737,631 15,028,190
2066 11,756,233 14,931,295
2065 11,776,031 14,833,794
2064 11,796,981 14,736,872
2063 11,818,873 14,638,180
2062 11,841,060 14,525,736
2061 11,864,790 14,420,068
2060 11,886,277 14,307,451
2059 11,907,924 14,194,972
2058 11,928,140 14,077,124
2057 11,951,275 13,957,197
2056 11,972,819 13,832,494
2055 11,992,614 13,702,508
2054 12,011,260 13,576,231
2053 12,029,602 13,440,929
2052 12,045,984 13,299,910
2051 12,059,458 13,152,910
2050 12,070,180 13,006,688
2049 12,079,277 12,863,637
2048 12,086,376 12,712,671
2047 12,091,336 12,566,944
2046 12,094,512 12,411,042
2045 12,096,264 12,254,651
2044 12,095,660 12,088,895
2043 12,094,445 11,928,393
2042 12,092,240 11,767,372
2041 12,088,320 11,599,942
2040 12,084,611 11,428,331
2039 12,080,011 11,259,845
2038 12,074,019 11,097,180
2037 12,067,048 10,928,754
2036 12,060,663 10,757,928
2035 12,054,093 10,582,918
2034 12,047,026 10,411,088
2033 12,038,587 10,238,503
2032 12,030,514 10,059,929
2031 12,022,079 9,881,109
2030 12,012,501 9,705,485
2029 12,000,773 9,529,493
2028 11,988,034 9,358,412
2027 11,974,384 9,177,288
2026 11,959,583 8,998,902
2025 11,941,781 8,819,794
2024 11,858,610 8,642,022
2023 11,779,946 8,460,512
2022 11,680,210 8,276,807
2021 11,586,195 8,094,602
2020 11,538,604 7,912,558
2019 11,488,980 7,731,991
2018 11,427,054 7,554,563
2017 11,375,158 7,379,299
2016 11,331,422 7,205,328
2015 11,274,196 7,037,655
2014 11,209,057 6,876,385
2013 11,159,407 6,714,051
2012 11,106,932 6,551,080
2011 11,038,264 6,387,251
2010 10,895,586 6,222,714
2009 10,796,493 6,055,646
2008 10,709,973 5,894,722
2007 10,625,700 5,749,352
2006 10,547,958 5,624,466
2005 10,478,617 5,501,712
2004 10,421,137 5,355,717
2003 10,376,133 5,177,687
2002 10,332,785 4,971,435
2001 10,286,570 4,692,716
2000 10,251,250 4,423,611
1999 10,226,419 4,318,043
1998 10,203,008 4,295,785
1997 10,181,245 4,253,716
1996 10,156,637 4,199,210
1995 10,136,811 4,179,179
1994 10,115,603 4,173,105
1993 10,084,475 4,157,130
1992 10,045,158 4,166,366
1991 10,004,486 4,246,267
1990 9,967,379 4,196,828
1989 9,937,697 4,034,037
1988 9,901,664 3,934,517
1987 9,870,234 3,829,718
1986 9,861,823 3,728,380
1985 9,858,308 3,638,438
1984 9,855,372 3,558,758
1983 9,855,520 3,481,646
1982 9,856,303 3,408,183
1981 9,858,982 3,338,940
1980 9,859,242 3,272,089
1979 9,848,382 3,207,499
1978 9,839,534 3,145,517
1977 9,830,358 3,085,354
1976 9,818,227 3,028,820
1975 9,800,700 2,974,657
1974 9,772,419 2,920,459
1973 9,741,720 2,866,955
1972 9,711,115 2,814,388
1971 9,673,162 2,763,222
1970 9,655,549 2,712,286
1969 9,646,032 2,661,365
1968 9,618,756 2,611,532
1967 9,580,991 2,562,384
1966 9,527,807 2,514,638
1965 9,463,667 2,468,666
1964 9,378,113 2,424,390
1963 9,289,770 2,382,258
1962 9,220,578 2,342,242
1961 9,183,948 2,304,227
1960 9,153,489 2,268,356

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/belgium/sierra-leone | CC BY

From 2006 to 2016, the population of Belgium increased by 783,464 people (a 7.43% growth), while Sierra Leone gained 1,580,862 people (a 28.1% growth).

For the next 10 years, from 2016 to 2026, Belgium gained 635,763 people (a 5.61% growth), while Sierra Leone's population increased by 1,885,203 people (a 26.2% growth).

Belgium was ranked 77th most populous country in 2006 and is 83rd in 2026. Sierra Leone was ranked 105th in 2006 and ranked 100th now.

The UN's World Population Prospects forecasts that in 24 years (in 2050) Belgium's population will grow by 0.86% to 12,070,180 people with a rank change from 83rd to 92nd. The population of Sierra Leone will increase by 43.1% to 13,006,688 people and rank change from 100th to 91st.

Belgium is projected to reach its peak in 2045 at 12.1M people compared to the peak of 16.2M people in 2093 for Sierra Leone.

Population growth rate by year

Belgium
Factual

Projection
Sierra Leone
Factual

Projection
1x
Year Growth rate
Belgium Sierra Leone
2100 -0.16% -0.09%
2099 -0.16% -0.08%
2098 -0.14% -0.09%
2097 -0.14% -0.07%
2096 -0.14% -0.05%
2095 -0.15% 0.002%
2094 -0.14% -0.03%
2093 -0.14% 0.02%
2092 -0.13% 0.04%
2091 -0.13% 0.06%
2090 -0.13% 0.07%
2089 -0.13% 0.09%
2088 -0.14% 0.1%
2087 -0.13% 0.17%
2086 -0.12% 0.13%
2085 -0.12% 0.15%
2084 -0.12% 0.21%
2083 -0.13% 0.23%
2082 -0.11% 0.25%
2081 -0.12% 0.24%
2080 -0.11% 0.26%
2079 -0.12% 0.31%
2078 -0.11% 0.32%
2077 -0.1% 0.35%
2076 -0.1% 0.38%
2075 -0.11% 0.35%
2074 -0.11% 0.44%
2073 -0.11% 0.45%
2072 -0.12% 0.47%
2071 -0.14% 0.51%
2070 -0.14% 0.53%
2069 -0.15% 0.59%
2068 -0.15% 0.64%
2067 -0.16% 0.65%
2066 -0.17% 0.66%
2065 -0.18% 0.66%
2064 -0.19% 0.67%
2063 -0.19% 0.77%
2062 -0.2% 0.73%
2061 -0.18% 0.79%
2060 -0.18% 0.79%
2059 -0.17% 0.84%
2058 -0.19% 0.86%
2057 -0.18% 0.9%
2056 -0.17% 0.95%
2055 -0.16% 0.93%
2054 -0.15% 1.01%
2053 -0.14% 1.06%
2052 -0.11% 1.12%
2051 -0.09% 1.12%
2050 -0.08% 1.11%
2049 -0.06% 1.19%
2048 -0.04% 1.16%
2047 -0.03% 1.26%
2046 -0.01% 1.28%
2045 0.005% 1.37%
2044 0.01% 1.35%
2043 0.02% 1.37%
2042 0.03% 1.44%
2041 0.03% 1.5%
2040 0.04% 1.5%
2039 0.05% 1.47%
2038 0.06% 1.54%
2037 0.05% 1.59%
2036 0.05% 1.65%
2035 0.06% 1.65%
2034 0.07% 1.69%
2033 0.07% 1.78%
2032 0.07% 1.81%
2031 0.08% 1.81%
2030 0.1% 1.85%
2029 0.11% 1.83%
2028 0.11% 1.97%
2027 0.12% 1.98%
2026 0.15% 2.03%
2025 0.7% 2.06%
2024 0.67% 2.15%
2023 0.85% 2.22%
2022 0.81% 2.25%
2021 0.41% 2.3%
2020 0.43% 2.34%
2019 0.54% 2.35%
2018 0.46% 2.38%
2017 0.39% 2.41%
2016 0.51% 2.38%
2015 0.58% 2.35%
2014 0.44% 2.42%
2013 0.47% 2.49%
2012 0.62% 2.56%
2011 1.31% 2.64%
2010 0.92% 2.76%
2009 0.81% 2.73%
2008 0.79% 2.53%
2007 0.74% 2.22%
2006 0.66% 2.23%
2005 0.55% 2.73%
2004 0.43% 3.44%
2003 0.42% 4.15%
2002 0.45% 5.94%
2001 0.34% 6.08%
2000 0.24% 2.44%
1999 0.23% 0.52%
1998 0.21% 0.99%
1997 0.24% 1.3%
1996 0.2% 0.48%
1995 0.21% 0.15%
1994 0.31% 0.38%
1993 0.39% -0.22%
1992 0.41% -1.88%
1991 0.37% 1.18%
1990 0.3% 4.04%
1989 0.36% 2.53%
1988 0.32% 2.74%
1987 0.09% 2.72%
1986 0.04% 2.47%
1985 0.03% 2.24%
1984 -0.002% 2.21%
1983 -0.008% 2.16%
1982 -0.03% 2.07%
1981 -0.003% 2.04%
1980 0.11% 2.01%
1979 0.09% 1.97%
1978 0.09% 1.95%
1977 0.12% 1.87%
1976 0.18% 1.82%
1975 0.29% 1.86%
1974 0.32% 1.87%
1973 0.32% 1.87%
1972 0.39% 1.85%
1971 0.18% 1.88%
1970 0.1% 1.91%
1969 0.28% 1.91%
1968 0.39% 1.92%
1967 0.56% 1.9%
1966 0.68% 1.86%
1965 0.91% 1.83%
1964 0.95% 1.77%
1963 0.75% 1.71%
1962 0.4% 1.65%
1961 0.33% 1.58%

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/belgium/sierra-leone | CC BY

In 2025, the population of Belgium grew by 0.7%, while Sierra Leone's population grew by 2.06%.

Live population counters

Belgium Sierra Leone
Current population
11967185
9090531
Population rank 83/197 100/197
Percent of world population 0.14% 0.11%
One net population change
6.34 minutes
2.96 minutes
One birth every
4.82 minutes
2.02 minutes
One death every
4.67 minutes
7.41 minutes
Daily growth/decline +228 +487
Annual growth/decline +83,171 +177,772
Annual growth/decline rate +0.7% +2.06%
Population growth rate rank 116/197 47/197
One migration net change every
16.5 minutes
46.6 minutes
Annual migration change +31,989 -11,309
Net migration rank 28/196 136/196
Foreign-born residents 2,349,032 49,997
Foreign-born residents rank 30/195 151/195
Foreign-born share of population 20% 0.6%
Foreign-born share rank 30/195 174/195

Natural population change vs migration

Belgium
Natural

Migration
Sierra Leone
Natural

Migration
1x
Year Population change
Belgium Sierra Leone
Natural Migration Natural Migration
2025 - 31,989 - -11,309
2024 -3,557 36,243 189,234 -11,000
2023 0 41,679 188,788 -4,000
2022 -2,336 118,615 186,625 -4,000
2021 5,793 24,017 183,326 -1,544
2020 -12,692 43,777 181,015 1,292
2019 8,042 58,469 181,068 -2,238
2018 7,999 50,604 178,772 -2,741
2017 10,238 37,981 173,259 1,234
2016 14,731 28,090 168,784 4,657
2015 11,274 63,536 162,275 -356
2014 21,297 37,472 160,137 485
2013 16,739 28,066 161,265 2,773
2012 18,882 45,001 160,915 988
2011 25,388 52,464 158,858 6,895
2010 23,970 105,232 155,338 7,983
2009 23,752 97,175 152,669 18,145
2008 22,491 66,470 149,855 1,182
2007 23,376 59,911 145,740 -6,042
2006 21,096 53,574 144,127 -34,052
2005 15,718 50,576 137,234 -1,805
2004 16,673 35,143 132,661 23,897
2003 7,263 34,472 130,312 69,185
2002 7,233 39,404 126,429 86,578
2001 11,315 34,924 116,647 227,791
2000 12,302 13,952 110,754 83,013
1999 9,203 16,849 102,295 -84,926
1998 9,183 12,517 103,906 -76,766
1997 12,218 10,262 105,433 -48,437
1996 12,188 15,684 104,140 -52,110
1995 11,150 1,937 100,885 -112,857
1994 12,139 17,636 101,486 -77,371
1993 14,118 18,542 103,317 -95,476
1992 20,090 25,941 103,251 -129,565
1991 22,010 27,038 105,477 -238,965
1990 19,935 8,299 100,778 131,587
1989 13,912 7,301 98,298 -5,079
1988 14,853 3,929 96,344 9,470
1987 11,844 3,525 94,235 9,558
1986 5,917 2,964 90,902 7,992
1985 2,958 2,165 88,869 -7,873
1984 4,927 1,697 87,072 -8,708
1983 2,956 1,252 84,628 -8,783
1982 7,885 1,100 82,457 -11,379
1981 11,831 2,826 80,111 -12,699
1980 10,845 11,482 77,932 -11,641
1979 11,818 11,277 75,992 -13,095
1978 7,872 10,828 74,130 -13,073
1977 8,847 10,460 71,663 -12,399
1976 1,964 10,360 69,506 -15,686
1975 0 9,652 67,560 -13,058
1974 7,818 8,924 65,357 -11,473
1973 11,690 8,684 62,443 -9,322
1972 18,451 8,384 60,279 -8,267
1971 21,281 7,992 58,484 -8,162
1970 23,173 19,393 56,513 -4,957
1969 21,221 20,072 54,768 -4,485
1968 20,199 19,809 53,126 -3,743
1967 31,618 19,492 51,734 -2,819
1966 36,206 18,985 49,486 -2,911
1965 39,748 18,243 47,223 -1,851
1964 51,580 17,687 45,487 -2,308
1963 41,804 16,355 43,569 -2,480
1962 42,414 14,829 41,603 -2,658
1961 52,349 10,566 40,022 -2,947
1960 40,275 9,893 38,192 -3,528

Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08).

GeoRank.org/population/belgium/sierra-leone | CC BY

Over the last 10 years, 7.28% of the population change in Belgium is from natural causes (a gain of 39,492 people) and 92.7% is from migration (a gain of 503,011 people). In Sierra Leone 99% is from natural causes (a gain of 1,793,146 people) and 1.03% is from migration (a loss of 18,696 people).

As of 2024, 2,349,032 residents or 20% of the population were not native-born in Belgium, compared to 49,997 people or 0.6% in Sierra Leone.

Biggest cities by population

Belgium
City Population
Brussels 1.25M
Antwerp 529K
Ghent 273K
Charleroi 204K
Liege 195K
Schaerbeek 133K
Anderlecht 121K
Bruges 119K
Namur 115K
Leuven 101K
Sierra Leone
City Population
Freetown 951K
Bo 234K
Kenema 188K

Compare countries by 7 more topics

Population map with other countries

1x

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/belgium/sierra-leone | CC BY

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Data sources:

  1. World Bank | Health (1960–2025, retrieved 2026-07-08)
  2. United Nations | World Population Prospects (1960–2100, retrieved 2026-07-08)
  3. U.S. Census Bureau (1960–2025, retrieved 2026-07-08)
  4. Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-07-08)
  5. Wikidata (2026, retrieved 2026-07-08)

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