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

Updated on by Georank team

The latest officially reported population of Gabon was 2,538,952 in 2024 vs 8,642,022 people in Sierra Leone in 2024. In 2026, based on the adjusted UN estimation, the current Gabon's population is 2,663,339 people compared to 9,049,533 in Sierra Leone.

Population statistics:

  • Sierra Leone's population is 3.4 times bigger than Gabon's.
  • Gabon is ranked the 141st most populous country in the world, while Sierra Leone is the 101st.
  • The countries together account for 0.14% of the world: 0.03% for Gabon vs 0.11% for Sierra Leone.
  • For the last 10 years, Gabon has had an average growth rate of +2.61% per year vs +2.32% in Sierra Leone.
  • Since 2006, the population of Gabon has increased from 1.51M people to 2.66M (76.6% growth), while Sierra Leone has grown from 5.62M to 9.05M (60.9% growth).

Gabon vs Sierra Leone: population by year and forecast

Gabon
Factual

Projection
Sierra Leone
Factual

Projection
1x
Year Population
Gabon Sierra Leone
2100 6,955,864 16,111,324
2099 6,912,052 16,126,181
2098 6,867,857 16,139,280
2097 6,822,087 16,154,153
2096 6,775,495 16,164,923
2095 6,727,815 16,173,557
2094 6,680,075 16,173,155
2093 6,631,425 16,177,864
2092 6,582,261 16,175,032
2091 6,532,342 16,168,153
2090 6,481,491 16,158,415
2089 6,429,956 16,146,773
2088 6,376,859 16,133,018
2087 6,323,194 16,116,823
2086 6,269,178 16,089,780
2085 6,215,121 16,068,438
2084 6,160,019 16,044,782
2083 6,103,820 16,011,134
2082 6,046,995 15,975,073
2081 5,989,415 15,935,071
2080 5,931,520 15,896,846
2079 5,873,052 15,854,898
2078 5,814,259 15,805,607
2077 5,754,857 15,754,551
2076 5,695,764 15,699,439
2075 5,636,043 15,639,458
2074 5,576,620 15,584,377
2073 5,516,502 15,516,736
2072 5,456,238 15,446,543
2071 5,395,666 15,374,790
2070 5,335,269 15,297,449
2069 5,274,817 15,216,666
2068 5,214,405 15,128,048
2067 5,153,427 15,032,144
2066 5,092,586 14,935,222
2065 5,031,764 14,837,697
2064 4,970,757 14,740,749
2063 4,909,630 14,642,031
2062 4,848,693 14,529,557
2061 4,787,706 14,423,861
2060 4,726,341 14,311,215
2059 4,664,287 14,198,706
2058 4,602,087 14,080,827
2057 4,540,068 13,960,869
2056 4,477,242 13,836,132
2055 4,414,477 13,706,113
2054 4,350,938 13,579,802
2053 4,287,630 13,444,465
2052 4,224,256 13,303,409
2051 4,160,459 13,156,370
2050 4,096,708 13,010,109
2049 4,032,976 12,867,021
2048 3,968,977 12,716,015
2047 3,904,724 12,570,250
2046 3,840,333 12,414,307
2045 3,775,786 12,257,874
2044 3,711,691 12,092,075
2043 3,647,956 11,931,531
2042 3,584,695 11,770,467
2041 3,521,560 11,602,993
2040 3,458,896 11,431,337
2039 3,397,011 11,262,807
2038 3,335,835 11,100,099
2037 3,275,298 10,931,629
2036 3,215,119 10,760,758
2035 3,155,791 10,585,702
2034 3,097,371 10,413,826
2033 3,039,514 10,241,196
2032 2,982,347 10,062,575
2031 2,925,690 9,883,708
2030 2,869,476 9,708,038
2029 2,813,855 9,532,000
2028 2,758,554 9,360,873
2027 2,703,425 9,179,702
2026 2,648,476 9,001,269
2025 2,593,715 8,822,114
2024 2,538,952 8,642,022
2023 2,484,789 8,460,512
2022 2,430,747 8,276,807
2021 2,376,722 8,094,602
2020 2,322,539 7,912,558
2019 2,267,706 7,731,991
2018 2,212,318 7,554,563
2017 2,156,900 7,379,299
2016 2,100,306 7,205,328
2015 2,040,989 7,037,655
2014 1,978,399 6,876,385
2013 1,913,059 6,714,051
2012 1,846,889 6,551,080
2011 1,781,985 6,387,251
2010 1,719,879 6,222,714
2009 1,661,556 6,055,646
2008 1,607,175 5,894,722
2007 1,556,237 5,749,352
2006 1,508,337 5,624,466
2005 1,463,495 5,501,712
2004 1,421,609 5,355,717
2003 1,382,350 5,177,687
2002 1,345,135 4,971,435
2001 1,309,589 4,692,716
2000 1,275,572 4,423,611
1999 1,243,016 4,318,043
1998 1,211,736 4,295,785
1997 1,181,439 4,253,716
1996 1,152,015 4,199,210
1995 1,123,213 4,179,179
1994 1,094,720 4,173,105
1993 1,066,405 4,157,130
1992 1,038,380 4,166,366
1991 1,010,818 4,246,267
1990 983,734 4,196,828
1989 957,138 4,034,037
1988 931,020 3,934,517
1987 905,479 3,829,718
1986 880,705 3,728,380
1985 856,726 3,638,438
1984 833,501 3,558,758
1983 811,005 3,481,646
1982 789,286 3,408,183
1981 768,385 3,338,940
1980 748,389 3,272,089
1979 729,375 3,207,499
1978 711,245 3,145,517
1977 693,984 3,085,354
1976 677,628 3,028,820
1975 662,197 2,974,657
1974 647,691 2,920,459
1973 633,995 2,866,955
1972 620,960 2,814,388
1971 608,348 2,763,222
1970 595,846 2,712,286
1969 583,276 2,661,365
1968 572,257 2,611,532
1967 563,108 2,562,384
1966 554,463 2,514,638
1965 546,308 2,468,666
1964 538,657 2,424,390
1963 531,452 2,382,258
1962 524,649 2,342,242
1961 518,266 2,304,227
1960 512,316 2,268,356

Data sources: United Nations | World Population Prospects (2025–2100, retrieved 2026-03-10); World Bank | Health (1960–2024, retrieved 2026-04-06).

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

From 2006 to 2016, the population of Gabon increased by 591,969 people (a 39.2% growth), while Sierra Leone gained 1,580,862 people (a 28.1% growth).

For the next 10 years, from 2016 to 2026, Gabon gained 563,033 people (a 26.8% growth), while Sierra Leone's population increased by 1,844,205 people (a 25.6% growth).

Gabon was ranked 147th most populous country in 2006 and is 141st in 2026. Sierra Leone was ranked 106th in 2006 and ranked 101st now.

The UN's World Population Prospects forecasts that in 24 years (in 2050) Gabon's population will grow by 53.8% to 4,096,708 people with a rank change from 141st to 133rd. The population of Sierra Leone will increase by 43.8% to 13,010,109 people and rank change from 101st to 91st.

Gabon is projected to reach its peak in 2100 at 6.96M people compared to the peak of 16.2M people in 2093 for Sierra Leone.

Population growth rate by year

Gabon
Factual

Projection
Sierra Leone
Factual

Projection
1x
Year Growth rate
Gabon Sierra Leone
2100 0.63% -0.09%
2099 0.64% -0.08%
2098 0.67% -0.09%
2097 0.69% -0.07%
2096 0.71% -0.05%
2095 0.71% 0.002%
2094 0.73% -0.03%
2093 0.75% 0.02%
2092 0.76% 0.04%
2091 0.78% 0.06%
2090 0.8% 0.07%
2089 0.83% 0.09%
2088 0.85% 0.1%
2087 0.86% 0.17%
2086 0.87% 0.13%
2085 0.89% 0.15%
2084 0.92% 0.21%
2083 0.94% 0.23%
2082 0.96% 0.25%
2081 0.98% 0.24%
2080 1% 0.26%
2079 1.01% 0.31%
2078 1.03% 0.32%
2077 1.04% 0.35%
2076 1.06% 0.38%
2075 1.07% 0.35%
2074 1.09% 0.44%
2073 1.1% 0.45%
2072 1.12% 0.47%
2071 1.13% 0.51%
2070 1.15% 0.53%
2069 1.16% 0.59%
2068 1.18% 0.64%
2067 1.19% 0.65%
2066 1.21% 0.66%
2065 1.23% 0.66%
2064 1.25% 0.67%
2063 1.26% 0.77%
2062 1.27% 0.73%
2061 1.3% 0.79%
2060 1.33% 0.79%
2059 1.35% 0.84%
2058 1.37% 0.86%
2057 1.4% 0.9%
2056 1.42% 0.95%
2055 1.46% 0.93%
2054 1.48% 1.01%
2053 1.5% 1.06%
2052 1.53% 1.12%
2051 1.56% 1.12%
2050 1.58% 1.11%
2049 1.61% 1.19%
2048 1.65% 1.16%
2047 1.68% 1.26%
2046 1.71% 1.28%
2045 1.73% 1.37%
2044 1.75% 1.35%
2043 1.76% 1.37%
2042 1.79% 1.44%
2041 1.81% 1.5%
2040 1.82% 1.5%
2039 1.83% 1.47%
2038 1.85% 1.54%
2037 1.87% 1.59%
2036 1.88% 1.65%
2035 1.89% 1.65%
2034 1.9% 1.69%
2033 1.92% 1.78%
2032 1.94% 1.81%
2031 1.96% 1.81%
2030 1.98% 1.85%
2029 2% 1.83%
2028 2.04% 1.97%
2027 2.07% 1.98%
2026 2.11% 2.03%
2025 2.16% 2.08%
2024 2.18% 2.15%
2023 2.22% 2.22%
2022 2.27% 2.25%
2021 2.33% 2.3%
2020 2.42% 2.34%
2019 2.5% 2.35%
2018 2.57% 2.38%
2017 2.69% 2.41%
2016 2.91% 2.38%
2015 3.16% 2.35%
2014 3.42% 2.42%
2013 3.58% 2.49%
2012 3.64% 2.56%
2011 3.61% 2.64%
2010 3.51% 2.76%
2009 3.38% 2.73%
2008 3.27% 2.53%
2007 3.18% 2.22%
2006 3.06% 2.23%
2005 2.95% 2.73%
2004 2.84% 3.44%
2003 2.77% 4.15%
2002 2.71% 5.94%
2001 2.67% 6.08%
2000 2.62% 2.44%
1999 2.58% 0.52%
1998 2.56% 0.99%
1997 2.55% 1.3%
1996 2.56% 0.48%
1995 2.6% 0.15%
1994 2.66% 0.38%
1993 2.7% -0.22%
1992 2.73% -1.88%
1991 2.75% 1.18%
1990 2.78% 4.04%
1989 2.81% 2.53%
1988 2.82% 2.74%
1987 2.81% 2.72%
1986 2.8% 2.47%
1985 2.79% 2.24%
1984 2.77% 2.21%
1983 2.75% 2.16%
1982 2.72% 2.07%
1981 2.67% 2.04%
1980 2.61% 2.01%
1979 2.55% 1.97%
1978 2.49% 1.95%
1977 2.41% 1.87%
1976 2.33% 1.82%
1975 2.24% 1.86%
1974 2.16% 1.87%
1973 2.1% 1.87%
1972 2.07% 1.85%
1971 2.1% 1.88%
1970 2.16% 1.91%
1969 1.93% 1.91%
1968 1.62% 1.92%
1967 1.56% 1.9%
1966 1.49% 1.86%
1965 1.42% 1.83%
1964 1.36% 1.77%
1963 1.3% 1.71%
1962 1.23% 1.65%
1961 1.16% 1.58%

Data sources: United Nations | World Population Prospects (2025–2100, retrieved 2026-03-10); World Bank | Health (1961–2024, retrieved 2026-04-06).

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

In 2024, the population of Gabon grew by 2.18%, while Sierra Leone's population grew by 2.15%.

Live population counters

Gabon Sierra Leone
Current population
2663339
9049533
Population rank 141/197 101/197
Percent of world population 0.03% 0.11%
One net population change
9.7 minutes
2.9 minutes
One birth every
7.65 minutes
2.03 minutes
One death every
33.7 minutes
7.5 minutes
Daily growth/decline +148 +497
Annual growth/decline +54,163 +181,510
Annual growth/decline rate +2.18% +2.15%
Population growth rate rank 44/197 47/197
One migration net change every
7.87 hours
46.6 minutes
Annual migration change +1,116 -11,309
Net migration rank 62/196 136/196
Foreign-born residents 449,746 49,997
Foreign-born residents rank 84/195 151/195
Foreign-born share of population 17.7% 0.6%
Foreign-born share rank 34/195 174/195

Natural population change vs migration

Gabon
Natural

Migration
Sierra Leone
Natural

Migration
1x
Year Population change
Gabon Sierra Leone
Natural Migration Natural Migration
2025 - 1,116 - -11,309
2024 - 1,105 - -11,000
2023 53,167 987 188,788 -4,000
2022 52,944 987 186,625 -4,000
2021 52,611 1,503 183,326 -1,544
2020 52,745 1,506 181,015 1,292
2019 53,185 2,233 181,068 -2,238
2018 52,476 2,886 178,772 -2,741
2017 51,455 4,013 173,259 1,234
2016 50,321 7,398 168,784 4,657
2015 48,876 12,041 162,275 -356
2014 47,704 16,565 160,137 485
2013 46,829 19,587 161,265 2,773
2012 45,941 19,973 160,915 988
2011 44,922 18,967 158,858 6,895
2010 43,061 17,274 155,338 7,983
2009 41,037 15,277 152,669 18,145
2008 39,002 13,441 149,855 1,182
2007 37,394 12,045 145,740 -6,042
2006 35,984 10,382 144,127 -34,052
2005 34,766 8,555 137,234 -1,805
2004 33,615 6,830 132,661 23,897
2003 32,633 5,434 130,312 69,185
2002 31,777 4,582 126,429 86,578
2001 30,941 3,801 116,647 227,791
2000 30,210 3,086 110,754 83,013
1999 29,330 2,480 102,295 -84,926
1998 28,697 2,055 103,906 -76,766
1997 28,053 1,786 105,433 -48,437
1996 27,450 1,555 104,140 -52,110
1995 27,290 1,314 100,885 -112,857
1994 27,271 1,110 101,486 -77,371
1993 27,235 1,009 103,317 -95,476
1992 26,810 990 103,251 -129,565
1991 26,334 990 105,477 -238,965
1990 25,858 990 100,778 131,587
1989 25,359 990 98,298 -5,079
1988 24,888 990 96,344 9,470
1987 24,212 990 94,235 9,558
1986 23,362 990 90,902 7,992
1985 22,617 990 88,869 -7,873
1984 21,851 990 87,072 -8,708
1983 21,162 990 84,628 -8,783
1982 20,292 990 82,457 -11,379
1981 19,528 990 80,111 -12,699
1980 18,503 990 77,932 -11,641
1979 17,553 990 75,992 -13,095
1978 16,714 990 74,130 -13,073
1977 15,842 972 71,663 -12,399
1976 14,998 899 69,506 -15,686
1975 14,162 792 67,560 -13,058
1974 13,381 680 65,357 -11,473
1973 12,731 608 62,443 -9,322
1972 12,095 639 60,279 -8,267
1971 11,357 1,130 58,484 -8,162
1970 10,635 1,882 56,513 -4,957
1969 9,969 2,650 54,768 -4,485
1968 9,417 0 53,126 -3,743
1967 8,883 0 51,734 -2,819
1966 8,410 0 49,486 -2,911
1965 7,902 0 47,223 -1,851
1964 7,402 0 45,487 -2,308
1963 7,001 0 43,569 -2,480
1962 6,609 0 41,603 -2,658
1961 6,161 0 40,022 -2,947
1960 5,732 0 38,192 -3,528

Data sources: World Bank | Health (1960–2025, retrieved 2026-04-06).

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

Over the last 10 years, 91.1% of the population change in Gabon is from natural causes (a gain of 515,484 people) and 8.86% is from migration (a gain of 50,119 people). In Sierra Leone 99.6% is from natural causes (a gain of 1,764,049 people) and 0.41% is from migration (a loss of 7,211 people).

As of 2024, 449,746 residents or 17.7% of the population were not native-born in Gabon, compared to 49,997 people or 0.6% in Sierra Leone.

Biggest cities by population

Gabon
City Population
Libreville 899K
Port-Gentil 155K
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 (1960–2024, retrieved 2026-04-06); United Nations | World Population Prospects (1960–2026, retrieved 2026-03-10); U.S. Census Bureau (1960–2025, retrieved 2026-02-08); Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-02-20).

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

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Data sources:

  1. World Bank | Health (1960–2025, retrieved 2026-04-06)
  2. United Nations | World Population Prospects (1960–2100, retrieved 2026-03-10)
  3. U.S. Census Bureau (1960–2025, retrieved 2026-02-08)
  4. Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-02-20)
  5. Wikidata (2026, retrieved 2026-02-08)

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