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

Updated on by Georank team

The latest officially reported population of Greece was 10,405,134 in 2024 vs 8,642,022 people in Sierra Leone in 2024. In 2026, based on the adjusted UN estimation, the current Greece's population is 10,181,414 people compared to 9,049,533 in Sierra Leone.

Population statistics:

  • Greece's population is 1.13 times bigger than Sierra Leone's.
  • Greece is ranked the 96th most populous country in the world, while Sierra Leone is the 101st.
  • The countries together account for 0.23% of the world: 0.12% for Greece vs 0.11% for Sierra Leone.
  • For the last 10 years, Greece has had an average growth rate of -0.47% per year vs +2.32% in Sierra Leone.
  • Since 2006, the population of Greece has decreased from 11M people to 10.2M (7.61% decline), while Sierra Leone has grown from 5.62M to 9.05M (60.9% growth).

Greece vs Sierra Leone: population by year and forecast

Greece
Factual

Projection
Sierra Leone
Factual

Projection
1x
Year Population
Greece Sierra Leone
2100 6,463,085 16,111,324
2099 6,505,287 16,126,181
2098 6,547,164 16,139,280
2097 6,589,081 16,154,153
2096 6,630,487 16,164,923
2095 6,671,006 16,173,557
2094 6,710,734 16,173,155
2093 6,749,510 16,177,864
2092 6,787,596 16,175,032
2091 6,824,775 16,168,153
2090 6,862,164 16,158,415
2089 6,900,089 16,146,773
2088 6,937,116 16,133,018
2087 6,973,450 16,116,823
2086 7,010,676 16,089,780
2085 7,048,751 16,068,438
2084 7,086,818 16,044,782
2083 7,124,743 16,011,134
2082 7,164,627 15,975,073
2081 7,205,487 15,935,071
2080 7,248,512 15,896,846
2079 7,292,836 15,854,898
2078 7,338,859 15,805,607
2077 7,387,671 15,754,551
2076 7,437,562 15,699,439
2075 7,489,139 15,639,458
2074 7,543,259 15,584,377
2073 7,600,155 15,516,736
2072 7,659,253 15,446,543
2071 7,719,672 15,374,790
2070 7,782,317 15,297,449
2069 7,847,153 15,216,666
2068 7,913,682 15,128,048
2067 7,980,659 15,032,144
2066 8,047,692 14,935,222
2065 8,114,348 14,837,697
2064 8,181,923 14,740,749
2063 8,250,274 14,642,031
2062 8,318,463 14,529,557
2061 8,386,919 14,423,861
2060 8,454,179 14,311,215
2059 8,522,250 14,198,706
2058 8,589,200 14,080,827
2057 8,655,428 13,960,869
2056 8,720,012 13,836,132
2055 8,783,558 13,706,113
2054 8,844,935 13,579,802
2053 8,903,834 13,444,465
2052 8,961,755 13,303,409
2051 9,018,494 13,156,370
2050 9,072,676 13,010,109
2049 9,126,801 12,867,021
2048 9,177,973 12,716,015
2047 9,228,605 12,570,250
2046 9,275,381 12,414,307
2045 9,321,349 12,257,874
2044 9,367,130 12,092,075
2043 9,411,608 11,931,531
2042 9,454,837 11,770,467
2041 9,499,098 11,602,993
2040 9,543,726 11,431,337
2039 9,588,298 11,262,807
2038 9,633,708 11,100,099
2037 9,679,362 10,931,629
2036 9,724,905 10,760,758
2035 9,771,397 10,585,702
2034 9,817,355 10,413,826
2033 9,863,589 10,241,196
2032 9,911,215 10,062,575
2031 9,956,924 9,883,708
2030 10,002,298 9,708,038
2029 10,047,641 9,532,000
2028 10,092,845 9,360,873
2027 10,137,354 9,179,702
2026 10,181,414 9,001,269
2025 10,223,023 8,822,114
2024 10,405,134 8,642,022
2023 10,407,351 8,460,512
2022 10,436,882 8,276,807
2021 10,569,207 8,094,602
2020 10,698,599 7,912,558
2019 10,721,582 7,731,991
2018 10,732,882 7,554,563
2017 10,754,679 7,379,299
2016 10,775,971 7,205,328
2015 10,820,883 7,037,655
2014 10,892,413 6,876,385
2013 10,965,211 6,714,051
2012 11,045,011 6,551,080
2011 11,104,899 6,387,251
2010 11,121,341 6,222,714
2009 11,107,017 6,055,646
2008 11,077,841 5,894,722
2007 11,048,473 5,749,352
2006 11,020,362 5,624,466
2005 10,987,314 5,501,712
2004 10,955,141 5,355,717
2003 10,928,070 5,177,687
2002 10,902,022 4,971,435
2001 10,862,132 4,692,716
2000 10,805,808 4,423,611
1999 10,761,698 4,318,043
1998 10,720,509 4,295,785
1997 10,661,259 4,253,716
1996 10,608,800 4,199,210
1995 10,562,153 4,179,179
1994 10,512,922 4,173,105
1993 10,460,415 4,157,130
1992 10,399,061 4,166,366
1991 10,319,927 4,246,267
1990 10,196,792 4,196,828
1989 10,089,498 4,034,037
1988 10,036,983 3,934,517
1987 10,000,595 3,829,718
1986 9,967,213 3,728,380
1985 9,934,300 3,638,438
1984 9,895,801 3,558,758
1983 9,846,627 3,481,646
1982 9,789,513 3,408,183
1981 9,729,350 3,338,940
1980 9,642,505 3,272,089
1979 9,548,258 3,207,499
1978 9,429,959 3,145,517
1977 9,308,479 3,085,354
1976 9,188,150 3,028,820
1975 9,046,541 2,974,657
1974 8,962,022 2,920,459
1973 8,929,086 2,866,955
1972 8,888,628 2,814,388
1971 8,831,036 2,763,222
1970 8,792,806 2,712,286
1969 8,772,764 2,661,365
1968 8,740,765 2,611,532
1967 8,684,088 2,562,384
1966 8,613,651 2,514,638
1965 8,550,333 2,468,666
1964 8,510,429 2,424,390
1963 8,479,625 2,382,258
1962 8,448,233 2,342,242
1961 8,398,050 2,304,227
1960 8,331,725 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/greece/sierra-leone | CC BY

From 2006 to 2016, the population of Greece decreased by 244,391 people (a 2.22% decline), while Sierra Leone gained 1,580,862 people (a 28.1% growth).

For the next 10 years, from 2016 to 2026, Greece lost 594,557 people (a 5.52% decline), while Sierra Leone's population increased by 1,844,205 people (a 25.6% growth).

Greece was ranked 74th most populous country in 2006 and is 96th 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) Greece's population will shrink by 10.9% to 9,072,676 people with a rank change from 96th to 106th. The population of Sierra Leone will increase by 43.8% to 13,010,109 people and rank change from 101st to 91st.

Sierra Leone is projected to reach its peak in 2093 at 16.2M people, while Greece's population already peaked in 2010 at 11.1M people and is projected to decrease to 6.46M people by 2100.

Population growth rate by year

Greece
Factual

Projection
Sierra Leone
Factual

Projection
1x
Year Growth rate
Greece Sierra Leone
2100 -0.65% -0.09%
2099 -0.64% -0.08%
2098 -0.64% -0.09%
2097 -0.62% -0.07%
2096 -0.61% -0.05%
2095 -0.59% 0.002%
2094 -0.57% -0.03%
2093 -0.56% 0.02%
2092 -0.54% 0.04%
2091 -0.54% 0.06%
2090 -0.55% 0.07%
2089 -0.53% 0.09%
2088 -0.52% 0.1%
2087 -0.53% 0.17%
2086 -0.54% 0.13%
2085 -0.54% 0.15%
2084 -0.53% 0.21%
2083 -0.56% 0.23%
2082 -0.57% 0.25%
2081 -0.59% 0.24%
2080 -0.61% 0.26%
2079 -0.63% 0.31%
2078 -0.66% 0.32%
2077 -0.67% 0.35%
2076 -0.69% 0.38%
2075 -0.72% 0.35%
2074 -0.75% 0.44%
2073 -0.77% 0.45%
2072 -0.78% 0.47%
2071 -0.8% 0.51%
2070 -0.83% 0.53%
2069 -0.84% 0.59%
2068 -0.84% 0.64%
2067 -0.83% 0.65%
2066 -0.82% 0.66%
2065 -0.83% 0.66%
2064 -0.83% 0.67%
2063 -0.82% 0.77%
2062 -0.82% 0.73%
2061 -0.8% 0.79%
2060 -0.8% 0.79%
2059 -0.78% 0.84%
2058 -0.77% 0.86%
2057 -0.74% 0.9%
2056 -0.72% 0.95%
2055 -0.69% 0.93%
2054 -0.66% 1.01%
2053 -0.65% 1.06%
2052 -0.63% 1.12%
2051 -0.6% 1.12%
2050 -0.59% 1.11%
2049 -0.56% 1.19%
2048 -0.55% 1.16%
2047 -0.5% 1.26%
2046 -0.49% 1.28%
2045 -0.49% 1.37%
2044 -0.47% 1.35%
2043 -0.46% 1.37%
2042 -0.47% 1.44%
2041 -0.47% 1.5%
2040 -0.46% 1.5%
2039 -0.47% 1.47%
2038 -0.47% 1.54%
2037 -0.47% 1.59%
2036 -0.48% 1.65%
2035 -0.47% 1.65%
2034 -0.47% 1.69%
2033 -0.48% 1.78%
2032 -0.46% 1.81%
2031 -0.45% 1.81%
2030 -0.45% 1.85%
2029 -0.45% 1.83%
2028 -0.44% 1.97%
2027 -0.43% 1.98%
2026 -0.41% 2.03%
2025 -1.75% 2.08%
2024 -0.02% 2.15%
2023 -0.28% 2.22%
2022 -1.25% 2.25%
2021 -1.21% 2.3%
2020 -0.21% 2.34%
2019 -0.11% 2.35%
2018 -0.2% 2.38%
2017 -0.2% 2.41%
2016 -0.42% 2.38%
2015 -0.66% 2.35%
2014 -0.66% 2.42%
2013 -0.72% 2.49%
2012 -0.54% 2.56%
2011 -0.15% 2.64%
2010 0.13% 2.76%
2009 0.26% 2.73%
2008 0.27% 2.53%
2007 0.26% 2.22%
2006 0.3% 2.23%
2005 0.29% 2.73%
2004 0.25% 3.44%
2003 0.24% 4.15%
2002 0.37% 5.94%
2001 0.52% 6.08%
2000 0.41% 2.44%
1999 0.38% 0.52%
1998 0.56% 0.99%
1997 0.49% 1.3%
1996 0.44% 0.48%
1995 0.47% 0.15%
1994 0.5% 0.38%
1993 0.59% -0.22%
1992 0.77% -1.88%
1991 1.21% 1.18%
1990 1.06% 4.04%
1989 0.52% 2.53%
1988 0.36% 2.74%
1987 0.33% 2.72%
1986 0.33% 2.47%
1985 0.39% 2.24%
1984 0.5% 2.21%
1983 0.58% 2.16%
1982 0.62% 2.07%
1981 0.9% 2.04%
1980 0.99% 2.01%
1979 1.25% 1.97%
1978 1.31% 1.95%
1977 1.31% 1.87%
1976 1.57% 1.82%
1975 0.94% 1.86%
1974 0.37% 1.87%
1973 0.46% 1.87%
1972 0.65% 1.85%
1971 0.43% 1.88%
1970 0.23% 1.91%
1969 0.37% 1.91%
1968 0.65% 1.92%
1967 0.82% 1.9%
1966 0.74% 1.86%
1965 0.47% 1.83%
1964 0.36% 1.77%
1963 0.37% 1.71%
1962 0.6% 1.65%
1961 0.8% 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/greece/sierra-leone | CC BY

In 2024, the population of Greece declined by 0.02%, while Sierra Leone's population grew by 2.15%.

Live population counters

Greece Sierra Leone
Current population
10181414
9049533
Population rank 96/197 101/197
Percent of world population 0.12% 0.11%
One net population change
3.95 hours
2.9 minutes
One birth every
7.43 minutes
2.03 minutes
One death every
4.14 minutes
7.5 minutes
Daily growth/decline -6 +497
Annual growth/decline -2,217 +181,510
Annual growth/decline rate -0.02% +2.15%
Population growth rate rank 165/197 47/197
One migration net change every
31.7 minutes
46.6 minutes
Annual migration change +16,636 -11,309
Net migration rank 37/196 136/196
Foreign-born residents 1,423,964 49,997
Foreign-born residents rank 46/195 151/195
Foreign-born share of population 14.2% 0.6%
Foreign-born share rank 47/195 174/195

Natural population change vs migration

Greece
Natural

Migration
Sierra Leone
Natural

Migration
1x
Year Population change
Greece Sierra Leone
Natural Migration Natural Migration
2025 - 16,636 - -11,309
2024 - -122,772 - -11,000
2023 -56,200 -159,430 188,788 -4,000
2022 -63,665 -53,997 186,625 -4,000
2021 -58,131 -160,277 183,326 -1,544
2020 -46,004 6,353 181,015 1,292
2019 -41,814 36,762 181,068 -2,238
2018 -33,272 17,938 178,772 -2,741
2017 -36,566 10,483 173,259 1,234
2016 -25,862 10,484 168,784 4,657
2015 -29,216 -43,462 162,275 -356
2014 -20,696 -46,678 160,137 485
2013 -17,545 -59,323 161,265 2,773
2012 -16,568 -65,364 160,915 988
2011 -4,441 -31,786 158,858 6,895
2010 5,560 2,001 155,338 7,983
2009 8,886 18,182 152,669 18,145
2008 11,077 27,081 149,855 1,182
2007 2,210 25,400 145,740 -6,042
2006 6,612 27,621 144,127 -34,052
2005 2,197 33,297 137,234 -1,805
2004 0 29,039 132,661 23,897
2003 -1,093 25,323 130,312 69,185
2002 0 25,692 126,429 86,578
2001 0 60,387 116,647 227,791
2000 -1,081 54,661 110,754 83,013
1999 -2,153 49,930 102,295 -84,926
1998 -2,144 47,856 103,906 -76,766
1997 2,133 45,671 105,433 -48,437
1996 0 43,444 104,140 -52,110
1995 1,056 42,674 100,885 -112,857
1994 6,307 42,897 101,486 -77,371
1993 4,185 39,829 103,317 -95,476
1992 6,239 41,000 103,251 -129,565
1991 6,192 37,917 105,477 -238,965
1990 8,157 26,294 100,778 131,587
1989 9,080 18,862 98,298 -5,079
1988 15,055 20,557 96,344 9,470
1987 10,001 19,005 94,235 9,558
1986 20,931 19,064 90,902 7,992
1985 22,849 16,093 88,869 -7,873
1984 37,604 19,767 87,072 -8,708
1983 42,341 18,655 84,628 -8,783
1982 50,906 19,675 82,457 -11,379
1981 54,484 25,061 80,111 -12,699
1980 60,748 47,460 77,932 -11,641
1979 65,882 72,184 75,992 -13,095
1978 64,124 60,775 74,130 -13,073
1977 59,574 19,193 71,663 -12,399
1976 65,236 89,601 69,506 -15,686
1975 61,516 61,265 67,560 -13,058
1974 68,111 -22,590 65,357 -11,473
1973 59,824 -42,387 62,443 -9,322
1972 64,887 -3,589 60,279 -8,267
1971 67,116 -12,747 58,484 -8,162
1970 71,222 -54,166 56,513 -4,957
1969 82,464 -118,544 54,768 -4,485
1968 87,408 -429 53,126 -3,743
1967 91,183 -55,853 51,734 -2,819
1966 86,998 21,206 49,486 -2,911
1965 83,793 -81,576 47,223 -1,851
1964 83,402 -76,678 45,487 -2,308
1963 81,404 -77,345 43,569 -2,480
1962 85,327 -74,972 41,603 -2,658
1961 86,500 -61,102 40,022 -2,947
1960 96,648 -15,996 38,192 -3,528

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

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

Over the last 10 years, 51.9% of the population change in Greece is from natural causes (a loss of 411,426 people) and 48.1% is from migration (a loss of 381,824 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, 1,423,964 residents or 14.2% of the population were not native-born in Greece, compared to 49,997 people or 0.6% in Sierra Leone.

Biggest cities by population

Greece
City Population
Athens 643K
Crete 623K
Thessaloniki 310K
Patras 174K
Piraeus 168K
Larissa 146K
Heraklion 145K
Peristeri 134K
Kallithea 97.6K
Glyfada 89.6K
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/greece/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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