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

Updated on by Georank team

The latest officially reported population of Sierra Leone was 8,642,022 in 2024 vs 5,422,069 people in Slovakia in 2024. In 2026, based on the adjusted UN estimation, the current Sierra Leone's population is 9,049,533 people compared to 5,359,438 in Slovakia.

Population statistics:

  • Sierra Leone's population is 1.69 times bigger than Slovakia's.
  • Sierra Leone is ranked the 101st most populous country in the world, while Slovakia is the 125th.
  • The countries together account for 0.17% of the world: 0.11% for Sierra Leone vs 0.06% for Slovakia.
  • For the last 10 years, Sierra Leone has had an average growth rate of +2.32% per year vs +0.01% in Slovakia.
  • Since 2006, the population of Sierra Leone has increased from 5.62M people to 9.05M (60.9% growth), while Slovakia has declined from 5.37M to 5.36M (0.25% decline).

Sierra Leone vs Slovakia: population by year and forecast

Sierra Leone
Factual

Projection
Slovakia
Factual

Projection
1x
Year Population
Sierra Leone Slovakia
2100 16,111,324 3,377,764
2099 16,126,181 3,399,869
2098 16,139,280 3,422,010
2097 16,154,153 3,444,161
2096 16,164,923 3,466,284
2095 16,173,557 3,488,595
2094 16,173,155 3,511,062
2093 16,177,864 3,533,742
2092 16,175,032 3,556,708
2091 16,168,153 3,580,021
2090 16,158,415 3,603,675
2089 16,146,773 3,627,811
2088 16,133,018 3,652,354
2087 16,116,823 3,677,451
2086 16,089,780 3,703,217
2085 16,068,438 3,729,670
2084 16,044,782 3,756,777
2083 16,011,134 3,784,617
2082 15,975,073 3,813,170
2081 15,935,071 3,842,528
2080 15,896,846 3,872,714
2079 15,854,898 3,903,653
2078 15,805,607 3,935,351
2077 15,754,551 3,967,981
2076 15,699,439 4,001,363
2075 15,639,458 4,035,465
2074 15,584,377 4,070,159
2073 15,516,736 4,105,475
2072 15,446,543 4,141,396
2071 15,374,790 4,177,582
2070 15,297,449 4,214,086
2069 15,216,666 4,250,775
2068 15,128,048 4,287,566
2067 15,032,144 4,324,173
2066 14,935,222 4,360,463
2065 14,837,697 4,396,562
2064 14,740,749 4,432,349
2063 14,642,031 4,467,634
2062 14,529,557 4,502,390
2061 14,423,861 4,536,423
2060 14,311,215 4,569,861
2059 14,198,706 4,602,562
2058 14,080,827 4,634,484
2057 13,960,869 4,665,491
2056 13,836,132 4,695,744
2055 13,706,113 4,725,147
2054 13,579,802 4,753,640
2053 13,444,465 4,781,680
2052 13,303,409 4,809,152
2051 13,156,370 4,836,056
2050 13,010,109 4,862,512
2049 12,867,021 4,888,649
2048 12,716,015 4,914,306
2047 12,570,250 4,939,719
2046 12,414,307 4,964,917
2045 12,257,874 4,989,905
2044 12,092,075 5,014,849
2043 11,931,531 5,039,628
2042 11,770,467 5,064,051
2041 11,602,993 5,088,319
2040 11,431,337 5,112,265
2039 11,262,807 5,135,696
2038 11,100,099 5,158,725
2037 10,931,629 5,181,188
2036 10,760,758 5,203,033
2035 10,585,702 5,224,142
2034 10,413,826 5,244,168
2033 10,241,196 5,263,308
2032 10,062,575 5,281,327
2031 9,883,708 5,298,206
2030 9,708,038 5,313,745
2029 9,532,000 5,327,761
2028 9,360,873 5,339,993
2027 9,179,702 5,350,648
2026 9,001,269 5,359,438
2025 8,822,114 5,396,894
2024 8,642,022 5,422,069
2023 8,460,512 5,426,740
2022 8,276,807 5,431,752
2021 8,094,602 5,447,247
2020 7,912,558 5,458,827
2019 7,731,991 5,454,147
2018 7,554,563 5,446,771
2017 7,379,299 5,439,232
2016 7,205,328 5,430,798
2015 7,037,655 5,423,801
2014 6,876,385 5,418,649
2013 6,714,051 5,413,393
2012 6,551,080 5,407,579
2011 6,387,251 5,398,384
2010 6,222,714 5,391,428
2009 6,055,646 5,386,406
2008 5,894,722 5,379,233
2007 5,749,352 5,374,622
2006 5,624,466 5,373,054
2005 5,501,712 5,372,807
2004 5,355,717 5,372,280
2003 5,177,687 5,373,374
2002 4,971,435 5,376,912
2001 4,692,716 5,378,867
2000 4,423,611 5,388,720
1999 4,318,043 5,396,020
1998 4,295,785 5,390,516
1997 4,253,716 5,383,291
1996 4,199,210 5,373,361
1995 4,179,179 5,361,999
1994 4,173,105 5,346,331
1993 4,157,130 5,325,305
1992 4,166,366 5,305,016
1991 4,246,267 5,303,294
1990 4,196,828 5,299,187
1989 4,034,037 5,275,942
1988 3,934,517 5,250,596
1987 3,829,718 5,222,840
1986 3,728,380 5,193,838
1985 3,638,438 5,161,768
1984 3,558,758 5,127,097
1983 3,481,646 5,091,971
1982 3,408,183 5,055,099
1981 3,338,940 5,016,105
1980 3,272,089 4,979,815
1979 3,207,499 4,938,973
1978 3,145,517 4,890,125
1977 3,085,354 4,840,501
1976 3,028,820 4,789,507
1975 2,974,657 4,739,105
1974 2,920,459 4,689,623
1973 2,866,955 4,641,445
1972 2,814,388 4,596,622
1971 2,763,222 4,557,449
1970 2,712,286 4,538,223
1969 2,661,365 4,518,607
1968 2,611,532 4,483,915
1967 2,562,384 4,449,367
1966 2,514,638 4,411,666
1965 2,468,666 4,370,983
1964 2,424,390 4,327,341
1963 2,382,258 4,282,017
1962 2,342,242 4,238,188
1961 2,304,227 4,191,667
1960 2,268,356 4,068,095

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/sierra-leone/slovakia | CC BY

From 2006 to 2016, the population of Sierra Leone increased by 1,580,862 people (a 28.1% growth), while Slovakia gained 57,744 people (a 1.07% growth).

For the next 10 years, from 2016 to 2026, Sierra Leone gained 1,844,205 people (a 25.6% growth), while Slovakia's population decreased by 71,360 people (a 1.31% decline).

Sierra Leone was ranked 106th most populous country in 2006 and is 101st in 2026. Slovakia was ranked 110th in 2006 and ranked 125th now.

The UN's World Population Prospects forecasts that in 24 years (in 2050) Sierra Leone's population will grow by 43.8% to 13,010,109 people with a rank change from 101st to 91st. The population of Slovakia will decrease by 9.27% to 4,862,512 people and rank change from 125th to 129th.

Sierra Leone is projected to reach its peak in 2093 at 16.2M people, while Slovakia's population already peaked in 2020 at 5.46M people and is projected to decrease to 3.38M people by 2100.

Population growth rate by year

Sierra Leone
Factual

Projection
Slovakia
Factual

Projection
1x
Year Growth rate
Sierra Leone Slovakia
2100 -0.09% -0.65%
2099 -0.08% -0.65%
2098 -0.09% -0.64%
2097 -0.07% -0.64%
2096 -0.05% -0.64%
2095 0.002% -0.64%
2094 -0.03% -0.64%
2093 0.02% -0.65%
2092 0.04% -0.65%
2091 0.06% -0.66%
2090 0.07% -0.67%
2089 0.09% -0.67%
2088 0.1% -0.68%
2087 0.17% -0.7%
2086 0.13% -0.71%
2085 0.15% -0.72%
2084 0.21% -0.74%
2083 0.23% -0.75%
2082 0.25% -0.76%
2081 0.24% -0.78%
2080 0.26% -0.79%
2079 0.31% -0.81%
2078 0.32% -0.82%
2077 0.35% -0.83%
2076 0.38% -0.85%
2075 0.35% -0.85%
2074 0.44% -0.86%
2073 0.45% -0.87%
2072 0.47% -0.87%
2071 0.51% -0.87%
2070 0.53% -0.86%
2069 0.59% -0.86%
2068 0.64% -0.85%
2067 0.65% -0.83%
2066 0.66% -0.82%
2065 0.66% -0.81%
2064 0.67% -0.79%
2063 0.77% -0.77%
2062 0.73% -0.75%
2061 0.79% -0.73%
2060 0.79% -0.71%
2059 0.84% -0.69%
2058 0.86% -0.66%
2057 0.9% -0.64%
2056 0.95% -0.62%
2055 0.93% -0.6%
2054 1.01% -0.59%
2053 1.06% -0.57%
2052 1.12% -0.56%
2051 1.12% -0.54%
2050 1.11% -0.53%
2049 1.19% -0.52%
2048 1.16% -0.51%
2047 1.26% -0.51%
2046 1.28% -0.5%
2045 1.37% -0.5%
2044 1.35% -0.49%
2043 1.37% -0.48%
2042 1.44% -0.48%
2041 1.5% -0.47%
2040 1.5% -0.46%
2039 1.47% -0.45%
2038 1.54% -0.43%
2037 1.59% -0.42%
2036 1.65% -0.4%
2035 1.65% -0.38%
2034 1.69% -0.36%
2033 1.78% -0.34%
2032 1.81% -0.32%
2031 1.81% -0.29%
2030 1.85% -0.26%
2029 1.83% -0.23%
2028 1.97% -0.2%
2027 1.98% -0.16%
2026 2.03% -0.69%
2025 2.08% -0.46%
2024 2.15% -0.09%
2023 2.22% -0.09%
2022 2.25% -0.28%
2021 2.3% -0.21%
2020 2.34% 0.09%
2019 2.35% 0.14%
2018 2.38% 0.14%
2017 2.41% 0.16%
2016 2.38% 0.13%
2015 2.35% 0.1%
2014 2.42% 0.1%
2013 2.49% 0.11%
2012 2.56% 0.17%
2011 2.64% 0.13%
2010 2.76% 0.09%
2009 2.73% 0.13%
2008 2.53% 0.09%
2007 2.22% 0.03%
2006 2.23% 0.005%
2005 2.73% 0.01%
2004 3.44% -0.02%
2003 4.15% -0.07%
2002 5.94% -0.04%
2001 6.08% -0.18%
2000 2.44% -0.14%
1999 0.52% 0.1%
1998 0.99% 0.13%
1997 1.3% 0.18%
1996 0.48% 0.21%
1995 0.15% 0.29%
1994 0.38% 0.39%
1993 -0.22% 0.38%
1992 -1.88% 0.03%
1991 1.18% 0.08%
1990 4.04% 0.44%
1989 2.53% 0.48%
1988 2.74% 0.53%
1987 2.72% 0.56%
1986 2.47% 0.62%
1985 2.24% 0.68%
1984 2.21% 0.69%
1983 2.16% 0.73%
1982 2.07% 0.78%
1981 2.04% 0.73%
1980 2.01% 0.83%
1979 1.97% 1%
1978 1.95% 1.03%
1977 1.87% 1.06%
1976 1.82% 1.06%
1975 1.86% 1.06%
1974 1.87% 1.04%
1973 1.87% 0.98%
1972 1.85% 0.86%
1971 1.88% 0.42%
1970 1.91% 0.43%
1969 1.91% 0.77%
1968 1.92% 0.78%
1967 1.9% 0.85%
1966 1.86% 0.93%
1965 1.83% 1.01%
1964 1.77% 1.06%
1963 1.71% 1.03%
1962 1.65% 1.11%
1961 1.58% 3.04%

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/sierra-leone/slovakia | CC BY

In 2024, the population of Sierra Leone grew by 2.15%, while Slovakia's population declined by 0.09%.

Live population counters

Sierra Leone Slovakia
Current population
9049533
5359438
Population rank 101/197 125/197
Percent of world population 0.11% 0.06%
One net population change
2.9 minutes
1.88 hours
One birth every
2.03 minutes
10.8 minutes
One death every
7.5 minutes
9.69 minutes
Daily growth/decline +497 -13
Annual growth/decline +181,510 -4,671
Annual growth/decline rate +2.15% -0.09%
Population growth rate rank 47/197 172/197
One migration net change every
46.6 minutes
16.8 minutes
Annual migration change -11,309 -31,377
Net migration rank 136/196 166/196
Foreign-born residents 49,997 323,991
Foreign-born residents rank 151/195 96/195
Foreign-born share of population 0.6% 5.9%
Foreign-born share rank 174/195 88/195

Natural population change vs migration

Sierra Leone
Natural

Migration
Slovakia
Natural

Migration
1x
Year Population change
Sierra Leone Slovakia
Natural Migration Natural Migration
2025 - -11,309 - -31,377
2024 - -11,000 - -21,027
2023 188,788 -4,000 -5,427 4,933
2022 186,625 -4,000 -7,062 92,314
2021 183,326 -1,544 -16,886 -8,172
2020 181,015 1,292 -2,184 4,350
2019 181,068 -2,238 3,818 3,128
2018 178,772 -2,741 3,268 3,446
2017 173,259 1,234 4,351 3,279
2016 168,784 4,657 5,431 3,487
2015 162,275 -356 2,170 2,549
2014 160,137 485 3,793 -1,158
2013 161,265 2,773 2,707 -1,181
2012 160,915 988 3,245 871
2011 158,858 6,895 9,177 -2,392
2010 155,338 7,983 7,008 -1,814
2009 152,669 18,145 8,619 -542
2008 149,855 1,182 4,303 -495
2007 145,740 -6,042 537 -571
2006 144,127 -34,052 537 -549
2005 137,234 -1,805 537 -561
2004 132,661 23,897 1,611 -522
2003 130,312 69,185 -537 -646
2002 126,429 86,578 -538 -580
2001 116,647 227,791 -1,076 -860
2000 110,754 83,013 2,155 -831
1999 102,295 -84,926 3,777 -119
1998 103,906 -76,766 4,312 -12
1997 105,433 -48,437 6,999 247
1996 104,140 -52,110 9,135 246
1995 100,885 -112,857 9,115 -30
1994 101,486 -77,371 14,970 -109
1993 103,317 -95,476 20,769 72
1992 103,251 -129,565 21,220 -201
1991 105,477 -238,965 23,865 174
1990 100,778 131,587 25,436 -9,402
1989 98,298 -5,079 26,380 -7,254
1988 96,344 9,470 30,979 -6,500
1987 94,235 9,558 31,859 -6,401
1986 90,902 7,992 34,279 -6,143
1985 88,869 -7,873 37,680 -6,068
1984 87,072 -8,708 38,966 -6,276
1983 84,628 -8,783 39,717 -6,361
1982 82,457 -11,379 41,958 -6,088
1981 80,111 -12,699 43,640 -5,821
1980 77,932 -11,641 44,320 -5,522
1979 75,992 -13,095 52,353 -4,712
1978 74,130 -13,073 52,324 -4,689
1977 71,663 -12,399 52,762 -4,621
1976 69,506 -15,686 54,121 -4,432
1975 67,560 -13,058 52,604 -4,652
1974 65,357 -11,473 52,524 -4,190
1973 62,443 -9,322 49,199 -3,854
1972 60,279 -8,267 46,426 -3,516
1971 58,484 -8,162 40,105 -3,495
1970 56,513 -4,957 38,575 -4,919
1969 54,768 -4,485 39,312 -8,998
1968 53,126 -3,743 38,113 -8,881
1967 51,734 -2,819 41,824 -8,876
1966 49,486 -2,911 45,440 -8,817
1965 47,223 -1,851 48,517 -8,707
1964 45,487 -2,308 54,092 -8,608
1963 43,569 -2,480 54,382 -8,548
1962 41,603 -2,658 49,587 -9,019
1961 40,022 -2,947 55,749 4,812
1960 38,192 -3,528 56,546 4,344

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

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

Over the last 10 years, 99.6% of the population change in Sierra Leone is from natural causes (a gain of 1,764,049 people) and 0.41% is from migration (a loss of 7,211 people). In Slovakia 7.47% is from natural causes (a loss of 8,728 people) and 92.5% is from migration (a gain of 108,156 people).

As of 2024, 49,997 residents or 0.6% of the population were not native-born in Sierra Leone, compared to 323,991 people or 5.9% in Slovakia.

Biggest cities by population

Sierra Leone
City Population
Freetown 951K
Bo 234K
Kenema 188K
Slovakia
City Population
Bratislava 479K
Kosice 224K
Petrzalka 112K
Presov 81.7K
Zilina 80.3K
Nitra 75.9K
Banska Bystrica 73.5K
Trnava 63.2K
Trencin 54.1K
Martin 50.3K

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/sierra-leone/slovakia | 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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