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

Updated on by Georank team

The latest officially reported population of Benin was 14,462,724 in 2024 vs 8,642,022 people in Sierra Leone in 2024. In 2026, based on the adjusted UN estimation, the current Benin's population is 15,272,847 people compared to 9,049,533 in Sierra Leone.

Population statistics:

  • Benin's population is 1.69 times bigger than Sierra Leone's.
  • Benin is ranked the 76th most populous country in the world, while Sierra Leone is the 101st.
  • The countries together account for 0.29% of the world: 0.18% for Benin vs 0.11% for Sierra Leone.
  • For the last 10 years, Benin has had an average growth rate of +2.77% per year vs +2.32% in Sierra Leone.
  • Since 2006, the population of Benin has increased from 8.69M people to 15.3M (75.7% growth), while Sierra Leone has grown from 5.62M to 9.05M (60.9% growth).

Benin vs Sierra Leone: population by year and forecast

Benin
Factual

Projection
Sierra Leone
Factual

Projection
1x
Year Population
Benin Sierra Leone
2100 39,989,767 16,111,324
2099 39,818,651 16,126,181
2098 39,641,581 16,139,280
2097 39,464,242 16,154,153
2096 39,272,978 16,164,923
2095 39,075,428 16,173,557
2094 38,867,372 16,173,155
2093 38,660,011 16,177,864
2092 38,444,222 16,175,032
2091 38,224,975 16,168,153
2090 38,000,359 16,158,415
2089 37,763,731 16,146,773
2088 37,520,135 16,133,018
2087 37,269,361 16,116,823
2086 37,016,296 16,089,780
2085 36,753,367 16,068,438
2084 36,488,045 16,044,782
2083 36,211,897 16,011,134
2082 35,924,760 15,975,073
2081 35,638,090 15,935,071
2080 35,345,991 15,896,846
2079 35,047,534 15,854,898
2078 34,742,657 15,805,607
2077 34,432,036 15,754,551
2076 34,117,234 15,699,439
2075 33,800,615 15,639,458
2074 33,470,800 15,584,377
2073 33,135,539 15,516,736
2072 32,790,810 15,446,543
2071 32,445,869 15,374,790
2070 32,092,820 15,297,449
2069 31,736,135 15,216,666
2068 31,381,779 15,128,048
2067 31,024,548 15,032,144
2066 30,663,928 14,935,222
2065 30,295,913 14,837,697
2064 29,924,160 14,740,749
2063 29,553,482 14,642,031
2062 29,180,287 14,529,557
2061 28,807,049 14,423,861
2060 28,430,337 14,311,215
2059 28,050,530 14,198,706
2058 27,671,195 14,080,827
2057 27,287,039 13,960,869
2056 26,904,721 13,836,132
2055 26,513,228 13,706,113
2054 26,119,305 13,579,802
2053 25,728,099 13,444,465
2052 25,330,792 13,303,409
2051 24,932,463 13,156,370
2050 24,533,080 13,010,109
2049 24,132,387 12,867,021
2048 23,730,545 12,716,015
2047 23,328,567 12,570,250
2046 22,922,898 12,414,307
2045 22,513,616 12,257,874
2044 22,110,933 12,092,075
2043 21,705,986 11,931,531
2042 21,299,816 11,770,467
2041 20,896,770 11,602,993
2040 20,495,080 11,431,337
2039 20,095,504 11,262,807
2038 19,696,033 11,100,099
2037 19,304,390 10,931,629
2036 18,913,667 10,760,758
2035 18,524,132 10,585,702
2034 18,138,864 10,413,826
2033 17,757,920 10,241,196
2032 17,380,954 10,062,575
2031 17,006,572 9,883,708
2030 16,637,754 9,708,038
2029 16,267,838 9,532,000
2028 15,901,575 9,360,873
2027 15,537,274 9,179,702
2026 15,174,802 9,001,269
2025 14,816,644 8,822,114
2024 14,462,724 8,642,022
2023 14,111,034 8,460,512
2022 13,759,501 8,276,807
2021 13,413,417 8,094,602
2020 13,070,169 7,912,558
2019 12,726,755 7,731,991
2018 12,383,347 7,554,563
2017 12,039,780 7,379,299
2016 11,697,842 7,205,328
2015 11,360,681 7,037,655
2014 11,030,004 6,876,385
2013 10,708,834 6,714,051
2012 10,397,657 6,551,080
2011 10,093,623 6,387,251
2010 9,797,484 6,222,714
2009 9,509,423 6,055,646
2008 9,228,466 5,894,722
2007 8,953,969 5,749,352
2006 8,693,242 5,624,466
2005 8,426,144 5,501,712
2004 8,159,094 5,355,717
2003 7,913,070 5,177,687
2002 7,675,426 4,971,435
2001 7,445,596 4,692,716
2000 7,221,619 4,423,611
1999 7,002,818 4,318,043
1998 6,789,489 4,295,785
1997 6,583,365 4,253,716
1996 6,391,858 4,199,210
1995 6,226,773 4,179,179
1994 6,096,506 4,173,105
1993 5,872,706 4,157,130
1992 5,617,844 4,166,366
1991 5,446,932 4,246,267
1990 5,281,479 4,196,828
1989 5,121,657 4,034,037
1988 4,967,341 3,934,517
1987 4,818,486 3,829,718
1986 4,675,420 3,728,380
1985 4,538,012 3,638,438
1984 4,405,895 3,558,758
1983 4,278,978 3,481,646
1982 4,156,596 3,408,183
1981 4,038,307 3,338,940
1980 3,925,251 3,272,089
1979 3,818,528 3,207,499
1978 3,718,305 3,145,517
1977 3,623,202 3,085,354
1976 3,532,196 3,028,820
1975 3,445,407 2,974,657
1974 3,362,633 2,920,459
1973 3,283,496 2,866,955
1972 3,207,543 2,814,388
1971 3,134,767 2,763,222
1970 3,065,057 2,712,286
1969 2,998,222 2,661,365
1968 2,934,257 2,611,532
1967 2,872,997 2,562,384
1966 2,814,317 2,514,638
1965 2,757,936 2,468,666
1964 2,704,003 2,424,390
1963 2,652,908 2,382,258
1962 2,604,659 2,342,242
1961 2,559,223 2,304,227
1960 2,517,286 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/benin/sierra-leone | CC BY

From 2006 to 2016, the population of Benin increased by 3,004,600 people (a 34.6% growth), while Sierra Leone gained 1,580,862 people (a 28.1% growth).

For the next 10 years, from 2016 to 2026, Benin gained 3,575,005 people (a 30.6% growth), while Sierra Leone's population increased by 1,844,205 people (a 25.6% growth).

Benin was ranked 89th most populous country in 2006 and is 76th 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) Benin's population will grow by 60.6% to 24,533,080 people with a rank change from 76th to 68th. The population of Sierra Leone will increase by 43.8% to 13,010,109 people and rank change from 101st to 91st.

Benin is projected to reach its peak in 2100 at 40M people compared to the peak of 16.2M people in 2093 for Sierra Leone.

Population growth rate by year

Benin
Factual

Projection
Sierra Leone
Factual

Projection
1x
Year Growth rate
Benin Sierra Leone
2100 0.43% -0.09%
2099 0.45% -0.08%
2098 0.45% -0.09%
2097 0.49% -0.07%
2096 0.51% -0.05%
2095 0.54% 0.002%
2094 0.54% -0.03%
2093 0.56% 0.02%
2092 0.57% 0.04%
2091 0.59% 0.06%
2090 0.63% 0.07%
2089 0.65% 0.09%
2088 0.67% 0.1%
2087 0.68% 0.17%
2086 0.72% 0.13%
2085 0.73% 0.15%
2084 0.76% 0.21%
2083 0.8% 0.23%
2082 0.8% 0.25%
2081 0.83% 0.24%
2080 0.85% 0.26%
2079 0.88% 0.31%
2078 0.9% 0.32%
2077 0.92% 0.35%
2076 0.94% 0.38%
2075 0.99% 0.35%
2074 1.01% 0.44%
2073 1.05% 0.45%
2072 1.06% 0.47%
2071 1.1% 0.51%
2070 1.12% 0.53%
2069 1.13% 0.59%
2068 1.15% 0.64%
2067 1.18% 0.65%
2066 1.21% 0.66%
2065 1.24% 0.66%
2064 1.25% 0.67%
2063 1.28% 0.77%
2062 1.3% 0.73%
2061 1.33% 0.79%
2060 1.35% 0.79%
2059 1.37% 0.84%
2058 1.41% 0.86%
2057 1.42% 0.9%
2056 1.48% 0.95%
2055 1.51% 0.93%
2054 1.52% 1.01%
2053 1.57% 1.06%
2052 1.6% 1.12%
2051 1.63% 1.12%
2050 1.66% 1.11%
2049 1.69% 1.19%
2048 1.72% 1.16%
2047 1.77% 1.26%
2046 1.82% 1.28%
2045 1.82% 1.37%
2044 1.87% 1.35%
2043 1.91% 1.37%
2042 1.93% 1.44%
2041 1.96% 1.5%
2040 1.99% 1.5%
2039 2.03% 1.47%
2038 2.03% 1.54%
2037 2.07% 1.59%
2036 2.1% 1.65%
2035 2.12% 1.65%
2034 2.15% 1.69%
2033 2.17% 1.78%
2032 2.2% 1.81%
2031 2.22% 1.81%
2030 2.27% 1.85%
2029 2.3% 1.83%
2028 2.34% 1.97%
2027 2.39% 1.98%
2026 2.42% 2.03%
2025 2.45% 2.08%
2024 2.49% 2.15%
2023 2.55% 2.22%
2022 2.58% 2.25%
2021 2.63% 2.3%
2020 2.7% 2.34%
2019 2.77% 2.35%
2018 2.85% 2.38%
2017 2.92% 2.41%
2016 2.97% 2.38%
2015 3% 2.35%
2014 3% 2.42%
2013 2.99% 2.49%
2012 3.01% 2.56%
2011 3.02% 2.64%
2010 3.03% 2.76%
2009 3.04% 2.73%
2008 3.07% 2.53%
2007 3% 2.22%
2006 3.17% 2.23%
2005 3.27% 2.73%
2004 3.11% 3.44%
2003 3.1% 4.15%
2002 3.09% 5.94%
2001 3.1% 6.08%
2000 3.12% 2.44%
1999 3.14% 0.52%
1998 3.13% 0.99%
1997 3% 1.3%
1996 2.65% 0.48%
1995 2.14% 0.15%
1994 3.81% 0.38%
1993 4.54% -0.22%
1992 3.14% -1.88%
1991 3.13% 1.18%
1990 3.12% 4.04%
1989 3.11% 2.53%
1988 3.09% 2.74%
1987 3.06% 2.72%
1986 3.03% 2.47%
1985 3% 2.24%
1984 2.97% 2.21%
1983 2.94% 2.16%
1982 2.93% 2.07%
1981 2.88% 2.04%
1980 2.79% 2.01%
1979 2.7% 1.97%
1978 2.62% 1.95%
1977 2.58% 1.87%
1976 2.52% 1.82%
1975 2.46% 1.86%
1974 2.41% 1.87%
1973 2.37% 1.87%
1972 2.32% 1.85%
1971 2.27% 1.88%
1970 2.23% 1.91%
1969 2.18% 1.91%
1968 2.13% 1.92%
1967 2.09% 1.9%
1966 2.04% 1.86%
1965 1.99% 1.83%
1964 1.93% 1.77%
1963 1.85% 1.71%
1962 1.78% 1.65%
1961 1.67% 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/benin/sierra-leone | CC BY

In 2024, the population of Benin grew by 2.49%, while Sierra Leone's population grew by 2.15%.

Live population counters

Benin Sierra Leone
Current population
15272847
9049533
Population rank 76/197 101/197
Percent of world population 0.18% 0.11%
One net population change
1.49 minutes
2.9 minutes
One birth every
1.1 minutes
2.03 minutes
One death every
4.23 minutes
7.5 minutes
Daily growth/decline +964 +497
Annual growth/decline +351,690 +181,510
Annual growth/decline rate +2.49% +2.15%
Population growth rate rank 27/197 47/197
One migration net change every
1.12 hours
46.6 minutes
Annual migration change -7,847 -11,309
Net migration rank 127/196 136/196
Foreign-born residents 418,202 49,997
Foreign-born residents rank 88/195 151/195
Foreign-born share of population 2.9% 0.6%
Foreign-born share rank 118/195 174/195

Natural population change vs migration

Benin
Natural

Migration
Sierra Leone
Natural

Migration
1x
Year Population change
Benin Sierra Leone
Natural Migration Natural Migration
2025 - -7,847 - -11,309
2024 - -7,725 - -11,000
2023 353,933 -192 188,788 -4,000
2022 349,518 -192 186,625 -4,000
2021 341,103 1,729 183,326 -1,544
2020 341,929 1,729 181,015 1,292
2019 339,817 3,366 181,068 -2,238
2018 340,270 3,372 178,772 -2,741
2017 339,763 3,716 173,259 1,234
2016 336,559 3,837 168,784 4,657
2015 330,573 3,369 162,275 -356
2014 323,753 3,667 160,137 485
2013 315,804 -887 161,265 2,773
2012 306,180 1,260 160,915 988
2011 296,348 4,283 158,858 6,895
2010 287,703 3,947 155,338 7,983
2009 280,204 4,279 152,669 18,145
2008 274,242 3,198 149,855 1,182
2007 271,305 241 145,740 -6,042
2006 265,040 -15,135 144,127 -34,052
2005 253,795 30,495 137,234 -1,805
2004 245,630 4,173 132,661 23,897
2003 237,962 4,283 130,312 69,185
2002 229,472 3,572 126,429 86,578
2001 222,877 3,732 116,647 227,791
2000 218,013 3,335 110,754 83,013
1999 213,074 3,177 102,295 -84,926
1998 208,342 2,051 103,906 -76,766
1997 203,182 -1,322 105,433 -48,437
1996 197,643 -16,490 104,140 -52,110
1995 194,481 -45,469 100,885 -112,857
1994 196,637 -85,128 101,486 -77,371
1993 179,858 156,223 103,317 -95,476
1992 173,794 -138 103,251 -129,565
1991 168,174 0 105,477 -238,965
1990 163,055 -333 100,778 131,587
1989 157,235 -315 98,298 -5,079
1988 153,580 -1,867 96,344 9,470
1987 147,783 -1,792 94,235 9,558
1986 142,039 -1,899 90,902 7,992
1985 136,621 -1,953 88,869 -7,873
1984 131,590 -2,018 87,072 -8,708
1983 126,349 -2,090 84,628 -8,783
1982 122,748 -2,253 82,457 -11,379
1981 118,634 -2,543 80,111 -12,699
1980 112,969 -2,946 77,932 -11,641
1979 106,782 -3,365 75,992 -13,095
1978 100,762 -3,731 74,130 -13,073
1977 97,200 -4,022 71,663 -12,399
1976 93,141 -4,308 69,506 -15,686
1975 89,350 -4,607 67,560 -13,058
1974 85,623 -4,814 65,357 -11,473
1973 82,422 -4,960 62,443 -9,322
1972 79,415 -4,970 60,279 -8,267
1971 76,034 -4,921 58,484 -8,162
1970 73,156 -4,851 56,513 -4,957
1969 70,155 -4,792 54,768 -4,485
1968 67,327 -4,756 53,126 -3,743
1967 64,709 -4,756 51,734 -2,819
1966 62,169 -4,764 49,486 -2,911
1965 60,154 -4,793 47,223 -1,851
1964 57,352 -4,839 45,487 -2,308
1963 54,514 -4,847 43,569 -2,480
1962 51,664 -4,844 41,603 -2,658
1961 48,838 -4,791 40,022 -2,947
1960 44,564 -4,722 38,192 -3,528

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

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

Over the last 10 years, 99.3% of the population change in Benin is from natural causes (a gain of 3,397,218 people) and 0.71% is from migration (a gain of 24,401 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, 418,202 residents or 2.9% of the population were not native-born in Benin, compared to 49,997 people or 0.6% in Sierra Leone.

Biggest cities by population

Benin
City Population
Cotonou 780K
Porto-Novo 234K
Abomey 90.2K
Save 31.4K
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/benin/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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