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Population in Belgium compared to Slovakia: Trends, Charts, Rankings

Updated on by Georank

The latest officially reported population of Belgium was 11,941,781 in 2025 vs 5,413,813 people in Slovakia in 2025. In 2026, based on the adjusted UN estimation, the current Belgium's population is 11,967,185 people compared to 5,376,239 in Slovakia.

Population statistics:

  • Belgium's population is 2.23 times bigger than Slovakia's.
  • Belgium is ranked the 83rd most populous country in the world, while Slovakia is the 125th.
  • The countries together account for 0.21% of the world: 0.14% for Belgium vs 0.06% for Slovakia.
  • For the last 10 years, Belgium has had an average growth rate of +0.58% per year vs -0.008% in Slovakia.
  • Since 2006, the population of Belgium has increased from 10.5M people to 12M (13.5% growth), while Slovakia has grown from 5.37M to 5.38M (0.06% growth).

Belgium vs Slovakia: population by year and forecast

Belgium
Factual

Projection
Slovakia
Factual

Projection
1x
Year Population
Belgium Slovakia
2100 11,250,862 3,388,353
2099 11,269,247 3,410,527
2098 11,287,433 3,432,738
2097 11,303,694 3,454,958
2096 11,319,229 3,477,150
2095 11,335,187 3,499,531
2094 11,351,692 3,522,068
2093 11,367,258 3,544,820
2092 11,383,419 3,567,858
2091 11,397,881 3,591,243
2090 11,412,370 3,614,972
2089 11,426,889 3,639,184
2088 11,442,238 3,663,803
2087 11,457,739 3,688,979
2086 11,472,102 3,714,826
2085 11,485,745 3,741,361
2084 11,499,703 3,768,554
2083 11,513,055 3,796,482
2082 11,527,480 3,825,124
2081 11,539,632 3,854,574
2080 11,553,646 3,884,854
2079 11,566,656 3,915,890
2078 11,580,982 3,947,687
2077 11,593,809 3,980,420
2076 11,605,311 4,013,906
2075 11,617,264 4,048,115
2074 11,630,340 4,082,918
2073 11,643,635 4,118,344
2072 11,656,916 4,154,378
2071 11,670,459 4,190,678
2070 11,686,541 4,227,297
2069 11,702,841 4,264,100
2068 11,720,297 4,301,007
2067 11,737,631 4,337,728
2066 11,756,233 4,374,132
2065 11,776,031 4,410,344
2064 11,796,981 4,446,244
2063 11,818,873 4,481,639
2062 11,841,060 4,516,504
2061 11,864,790 4,550,644
2060 11,886,277 4,584,186
2059 11,907,924 4,616,990
2058 11,928,140 4,649,013
2057 11,951,275 4,680,116
2056 11,972,819 4,710,464
2055 11,992,614 4,739,960
2054 12,011,260 4,768,542
2053 12,029,602 4,796,670
2052 12,045,984 4,824,228
2051 12,059,458 4,851,216
2050 12,070,180 4,877,755
2049 12,079,277 4,903,974
2048 12,086,376 4,929,712
2047 12,091,336 4,955,205
2046 12,094,512 4,980,481
2045 12,096,264 5,005,547
2044 12,095,660 5,030,570
2043 12,094,445 5,055,426
2042 12,092,240 5,079,926
2041 12,088,320 5,104,270
2040 12,084,611 5,128,291
2039 12,080,011 5,151,796
2038 12,074,019 5,174,897
2037 12,067,048 5,197,430
2036 12,060,663 5,219,344
2035 12,054,093 5,240,519
2034 12,047,026 5,260,607
2033 12,038,587 5,279,808
2032 12,030,514 5,297,883
2031 12,022,079 5,314,815
2030 12,012,501 5,330,403
2029 12,000,773 5,344,463
2028 11,988,034 5,356,733
2027 11,974,384 5,367,421
2026 11,959,583 5,376,239
2025 11,941,781 5,413,813
2024 11,858,610 5,422,069
2023 11,779,946 5,426,740
2022 11,680,210 5,431,752
2021 11,586,195 5,447,247
2020 11,538,604 5,458,827
2019 11,488,980 5,454,147
2018 11,427,054 5,446,771
2017 11,375,158 5,439,232
2016 11,331,422 5,430,798
2015 11,274,196 5,423,801
2014 11,209,057 5,418,649
2013 11,159,407 5,413,393
2012 11,106,932 5,407,579
2011 11,038,264 5,398,384
2010 10,895,586 5,391,428
2009 10,796,493 5,386,406
2008 10,709,973 5,379,233
2007 10,625,700 5,374,622
2006 10,547,958 5,373,054
2005 10,478,617 5,372,807
2004 10,421,137 5,372,280
2003 10,376,133 5,373,374
2002 10,332,785 5,376,912
2001 10,286,570 5,378,867
2000 10,251,250 5,388,720
1999 10,226,419 5,396,020
1998 10,203,008 5,390,516
1997 10,181,245 5,383,291
1996 10,156,637 5,373,361
1995 10,136,811 5,361,999
1994 10,115,603 5,346,331
1993 10,084,475 5,325,305
1992 10,045,158 5,305,016
1991 10,004,486 5,303,294
1990 9,967,379 5,299,187
1989 9,937,697 5,275,942
1988 9,901,664 5,250,596
1987 9,870,234 5,222,840
1986 9,861,823 5,193,838
1985 9,858,308 5,161,768
1984 9,855,372 5,127,097
1983 9,855,520 5,091,971
1982 9,856,303 5,055,099
1981 9,858,982 5,016,105
1980 9,859,242 4,979,815
1979 9,848,382 4,938,973
1978 9,839,534 4,890,125
1977 9,830,358 4,840,501
1976 9,818,227 4,789,507
1975 9,800,700 4,739,105
1974 9,772,419 4,689,623
1973 9,741,720 4,641,445
1972 9,711,115 4,596,622
1971 9,673,162 4,557,449
1970 9,655,549 4,538,223
1969 9,646,032 4,518,607
1968 9,618,756 4,483,915
1967 9,580,991 4,449,367
1966 9,527,807 4,411,666
1965 9,463,667 4,370,983
1964 9,378,113 4,327,341
1963 9,289,770 4,282,017
1962 9,220,578 4,238,188
1961 9,183,948 4,191,667
1960 9,153,489 4,068,095

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/slovakia | CC BY

From 2006 to 2016, the population of Belgium increased by 783,464 people (a 7.43% growth), while Slovakia gained 57,744 people (a 1.07% growth).

For the next 10 years, from 2016 to 2026, Belgium gained 635,763 people (a 5.61% growth), while Slovakia's population decreased by 54,559 people (a 1% decline).

Belgium was ranked 77th most populous country in 2006 and is 83rd 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) Belgium's population will grow by 0.86% to 12,070,180 people with a rank change from 83rd to 92nd. The population of Slovakia will decrease by 9.27% to 4,877,755 people and rank change from 125th to 129th.

Belgium is projected to reach its peak in 2045 at 12.1M people, while Slovakia's population already peaked in 2020 at 5.46M people and is projected to decrease to 3.39M people by 2100.

Population growth rate by year

Belgium
Factual

Projection
Slovakia
Factual

Projection
1x
Year Growth rate
Belgium Slovakia
2100 -0.16% -0.65%
2099 -0.16% -0.65%
2098 -0.14% -0.64%
2097 -0.14% -0.64%
2096 -0.14% -0.64%
2095 -0.15% -0.64%
2094 -0.14% -0.64%
2093 -0.14% -0.65%
2092 -0.13% -0.65%
2091 -0.13% -0.66%
2090 -0.13% -0.67%
2089 -0.13% -0.67%
2088 -0.14% -0.68%
2087 -0.13% -0.7%
2086 -0.12% -0.71%
2085 -0.12% -0.72%
2084 -0.12% -0.74%
2083 -0.13% -0.75%
2082 -0.11% -0.76%
2081 -0.12% -0.78%
2080 -0.11% -0.79%
2079 -0.12% -0.81%
2078 -0.11% -0.82%
2077 -0.1% -0.83%
2076 -0.1% -0.85%
2075 -0.11% -0.85%
2074 -0.11% -0.86%
2073 -0.11% -0.87%
2072 -0.12% -0.87%
2071 -0.14% -0.87%
2070 -0.14% -0.86%
2069 -0.15% -0.86%
2068 -0.15% -0.85%
2067 -0.16% -0.83%
2066 -0.17% -0.82%
2065 -0.18% -0.81%
2064 -0.19% -0.79%
2063 -0.19% -0.77%
2062 -0.2% -0.75%
2061 -0.18% -0.73%
2060 -0.18% -0.71%
2059 -0.17% -0.69%
2058 -0.19% -0.66%
2057 -0.18% -0.64%
2056 -0.17% -0.62%
2055 -0.16% -0.6%
2054 -0.15% -0.59%
2053 -0.14% -0.57%
2052 -0.11% -0.56%
2051 -0.09% -0.54%
2050 -0.08% -0.53%
2049 -0.06% -0.52%
2048 -0.04% -0.51%
2047 -0.03% -0.51%
2046 -0.01% -0.5%
2045 0.005% -0.5%
2044 0.01% -0.49%
2043 0.02% -0.48%
2042 0.03% -0.48%
2041 0.03% -0.47%
2040 0.04% -0.46%
2039 0.05% -0.45%
2038 0.06% -0.43%
2037 0.05% -0.42%
2036 0.05% -0.4%
2035 0.06% -0.38%
2034 0.07% -0.36%
2033 0.07% -0.34%
2032 0.07% -0.32%
2031 0.08% -0.29%
2030 0.1% -0.26%
2029 0.11% -0.23%
2028 0.11% -0.2%
2027 0.12% -0.16%
2026 0.15% -0.69%
2025 0.7% -0.15%
2024 0.67% -0.09%
2023 0.85% -0.09%
2022 0.81% -0.28%
2021 0.41% -0.21%
2020 0.43% 0.09%
2019 0.54% 0.14%
2018 0.46% 0.14%
2017 0.39% 0.16%
2016 0.51% 0.13%
2015 0.58% 0.1%
2014 0.44% 0.1%
2013 0.47% 0.11%
2012 0.62% 0.17%
2011 1.31% 0.13%
2010 0.92% 0.09%
2009 0.81% 0.13%
2008 0.79% 0.09%
2007 0.74% 0.03%
2006 0.66% 0.005%
2005 0.55% 0.01%
2004 0.43% -0.02%
2003 0.42% -0.07%
2002 0.45% -0.04%
2001 0.34% -0.18%
2000 0.24% -0.14%
1999 0.23% 0.1%
1998 0.21% 0.13%
1997 0.24% 0.18%
1996 0.2% 0.21%
1995 0.21% 0.29%
1994 0.31% 0.39%
1993 0.39% 0.38%
1992 0.41% 0.03%
1991 0.37% 0.08%
1990 0.3% 0.44%
1989 0.36% 0.48%
1988 0.32% 0.53%
1987 0.09% 0.56%
1986 0.04% 0.62%
1985 0.03% 0.68%
1984 -0.002% 0.69%
1983 -0.008% 0.73%
1982 -0.03% 0.78%
1981 -0.003% 0.73%
1980 0.11% 0.83%
1979 0.09% 1%
1978 0.09% 1.03%
1977 0.12% 1.06%
1976 0.18% 1.06%
1975 0.29% 1.06%
1974 0.32% 1.04%
1973 0.32% 0.98%
1972 0.39% 0.86%
1971 0.18% 0.42%
1970 0.1% 0.43%
1969 0.28% 0.77%
1968 0.39% 0.78%
1967 0.56% 0.85%
1966 0.68% 0.93%
1965 0.91% 1.01%
1964 0.95% 1.06%
1963 0.75% 1.03%
1962 0.4% 1.11%
1961 0.33% 3.04%

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/slovakia | CC BY

In 2025, the population of Belgium grew by 0.7%, while Slovakia's population declined by 0.15%.

Live population counters

Belgium Slovakia
Current population
11967185
5376239
Population rank 83/197 125/197
Percent of world population 0.14% 0.06%
One net population change
6.34 minutes
1.06 hours
One birth every
4.82 minutes
11.4 minutes
One death every
4.67 minutes
9.79 minutes
Daily growth/decline +228 -23
Annual growth/decline +83,171 -8,256
Annual growth/decline rate +0.7% -0.15%
Population growth rate rank 116/197 170/197
One migration net change every
16.5 minutes
16.8 minutes
Annual migration change +31,989 -31,377
Net migration rank 28/196 166/196
Foreign-born residents 2,349,032 323,991
Foreign-born residents rank 30/195 96/195
Foreign-born share of population 20% 5.9%
Foreign-born share rank 30/195 88/195

Natural population change vs migration

Belgium
Natural

Migration
Slovakia
Natural

Migration
1x
Year Population change
Belgium Slovakia
Natural Migration Natural Migration
2025 - 31,989 - -31,377
2024 -3,557 36,243 -7,591 -21,027
2023 0 41,679 -5,427 4,933
2022 -2,336 118,615 -7,062 92,314
2021 5,793 24,017 -16,886 -8,172
2020 -12,692 43,777 -2,184 4,350
2019 8,042 58,469 3,818 3,128
2018 7,999 50,604 3,268 3,446
2017 10,238 37,981 4,351 3,279
2016 14,731 28,090 5,431 3,487
2015 11,274 63,536 2,170 2,549
2014 21,297 37,472 3,793 -1,158
2013 16,739 28,066 2,707 -1,181
2012 18,882 45,001 3,245 871
2011 25,388 52,464 9,177 -2,392
2010 23,970 105,232 7,008 -1,814
2009 23,752 97,175 8,619 -542
2008 22,491 66,470 4,303 -495
2007 23,376 59,911 537 -571
2006 21,096 53,574 537 -549
2005 15,718 50,576 537 -561
2004 16,673 35,143 1,611 -522
2003 7,263 34,472 -537 -646
2002 7,233 39,404 -538 -580
2001 11,315 34,924 -1,076 -860
2000 12,302 13,952 2,155 -831
1999 9,203 16,849 3,777 -119
1998 9,183 12,517 4,312 -12
1997 12,218 10,262 6,999 247
1996 12,188 15,684 9,135 246
1995 11,150 1,937 9,115 -30
1994 12,139 17,636 14,970 -109
1993 14,118 18,542 20,769 72
1992 20,090 25,941 21,220 -201
1991 22,010 27,038 23,865 174
1990 19,935 8,299 25,436 -9,402
1989 13,912 7,301 26,380 -7,254
1988 14,853 3,929 30,979 -6,500
1987 11,844 3,525 31,859 -6,401
1986 5,917 2,964 34,279 -6,143
1985 2,958 2,165 37,680 -6,068
1984 4,927 1,697 38,966 -6,276
1983 2,956 1,252 39,717 -6,361
1982 7,885 1,100 41,958 -6,088
1981 11,831 2,826 43,640 -5,821
1980 10,845 11,482 44,320 -5,522
1979 11,818 11,277 52,353 -4,712
1978 7,872 10,828 52,324 -4,689
1977 8,847 10,460 52,762 -4,621
1976 1,964 10,360 54,121 -4,432
1975 0 9,652 52,604 -4,652
1974 7,818 8,924 52,524 -4,190
1973 11,690 8,684 49,199 -3,854
1972 18,451 8,384 46,426 -3,516
1971 21,281 7,992 40,105 -3,495
1970 23,173 19,393 38,575 -4,919
1969 21,221 20,072 39,312 -8,998
1968 20,199 19,809 38,113 -8,881
1967 31,618 19,492 41,824 -8,876
1966 36,206 18,985 45,440 -8,817
1965 39,748 18,243 48,517 -8,707
1964 51,580 17,687 54,092 -8,608
1963 41,804 16,355 54,382 -8,548
1962 42,414 14,829 49,587 -9,019
1961 52,349 10,566 55,749 4,812
1960 40,275 9,893 56,546 4,344

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

GeoRank.org/population/belgium/slovakia | 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 Slovakia 18.6% is from natural causes (a loss of 20,112 people) and 81.4% is from migration (a gain of 88,287 people).

As of 2024, 2,349,032 residents or 20% of the population were not native-born in Belgium, compared to 323,991 people or 5.9% in Slovakia.

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
Slovakia
City Population
Bratislava 481K
Kosice 222K
Presov 81.2K
Zilina 79.9K
Nitra 75.3K
Banska Bystrica 73.1K
Trnava 63.2K
Trencin 54.1K
Martin 50.2K
Poprad 48K

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/slovakia | 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. Wikidata (2026, retrieved 2026-07-08)
  5. Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-07-08)

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