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

Updated on by Georank

The latest officially reported population of Japan was 123,366,734 in 2025 vs 5,413,813 people in Slovakia in 2025. In 2026, based on the adjusted UN estimation, the current Japan's population is 122,704,252 people compared to 5,376,239 in Slovakia.

Population statistics:

  • Japan's population is 22.8 times bigger than Slovakia's.
  • Japan is ranked the 12th most populous country in the world, while Slovakia is the 125th.
  • The countries together account for 1.54% of the world: 1.48% for Japan vs 0.06% for Slovakia.
  • For the last 10 years, Japan has had an average growth rate of -0.28% per year vs -0.008% in Slovakia.
  • Since 2006, the population of Japan has decreased from 128M people to 123M (4.03% decline), while Slovakia has grown from 5.37M to 5.38M (0.06% growth).

Japan vs Slovakia: population by year and forecast

Japan
Factual

Projection
Slovakia
Factual

Projection
1x
Year Population
Japan Slovakia
2100 76,995,942 3,388,353
2099 77,380,486 3,410,527
2098 77,759,557 3,432,738
2097 78,135,569 3,454,958
2096 78,515,892 3,477,150
2095 78,892,606 3,499,531
2094 79,267,768 3,522,068
2093 79,645,584 3,544,820
2092 80,025,578 3,567,858
2091 80,401,222 3,591,243
2090 80,778,500 3,614,972
2089 81,158,413 3,639,184
2088 81,539,639 3,663,803
2087 81,926,401 3,688,979
2086 82,322,612 3,714,826
2085 82,727,738 3,741,361
2084 83,141,354 3,768,554
2083 83,562,394 3,796,482
2082 83,998,809 3,825,124
2081 84,447,888 3,854,574
2080 84,918,455 3,884,854
2079 85,406,042 3,915,890
2078 85,916,840 3,947,687
2077 86,453,316 3,980,420
2076 87,012,155 4,013,906
2075 87,597,053 4,048,115
2074 88,209,803 4,082,918
2073 88,854,316 4,118,344
2072 89,519,055 4,154,378
2071 90,204,314 4,190,678
2070 90,919,143 4,227,297
2069 91,645,589 4,264,100
2068 92,388,299 4,301,007
2067 93,133,993 4,337,728
2066 93,889,902 4,374,132
2065 94,654,259 4,410,344
2064 95,412,429 4,446,244
2063 96,169,244 4,481,639
2062 96,924,236 4,516,504
2061 97,675,525 4,550,644
2060 98,422,553 4,584,186
2059 99,166,038 4,616,990
2058 99,890,950 4,649,013
2057 100,607,740 4,680,116
2056 101,318,164 4,710,464
2055 102,012,184 4,739,960
2054 102,706,063 4,768,542
2053 103,381,833 4,796,670
2052 104,059,800 4,824,228
2051 104,729,745 4,851,216
2050 105,400,477 4,877,755
2049 106,076,354 4,903,974
2048 106,754,699 4,929,712
2047 107,442,881 4,955,205
2046 108,139,155 4,980,481
2045 108,844,934 5,005,547
2044 109,553,441 5,030,570
2043 110,269,851 5,055,426
2042 110,992,599 5,079,926
2041 111,729,216 5,104,270
2040 112,463,507 5,128,291
2039 113,200,859 5,151,796
2038 113,940,856 5,174,897
2037 114,687,611 5,197,430
2036 115,436,359 5,219,344
2035 116,187,949 5,240,519
2034 116,936,734 5,260,607
2033 117,678,572 5,279,808
2032 118,419,247 5,297,883
2031 119,153,646 5,314,815
2030 119,882,512 5,330,403
2029 120,600,781 5,344,463
2028 121,314,239 5,356,733
2027 122,015,984 5,367,421
2026 122,704,252 5,376,239
2025 123,366,734 5,413,813
2024 123,975,371 5,422,069
2023 124,516,650 5,426,740
2022 125,124,989 5,431,752
2021 125,681,593 5,447,247
2020 126,261,000 5,458,827
2019 126,633,000 5,454,147
2018 126,811,000 5,446,771
2017 126,972,000 5,439,232
2016 127,076,000 5,430,798
2015 127,141,000 5,423,801
2014 127,276,000 5,418,649
2013 127,445,000 5,413,393
2012 127,629,000 5,407,579
2011 127,833,000 5,398,384
2010 128,070,000 5,391,428
2009 128,047,000 5,386,406
2008 128,063,000 5,379,233
2007 128,001,000 5,374,622
2006 127,854,000 5,373,054
2005 127,773,000 5,372,807
2004 127,761,000 5,372,280
2003 127,718,000 5,373,374
2002 127,445,000 5,376,912
2001 127,149,000 5,378,867
2000 126,843,000 5,388,720
1999 126,631,000 5,396,020
1998 126,400,000 5,390,516
1997 126,057,000 5,383,291
1996 125,757,000 5,373,361
1995 125,472,000 5,361,999
1994 125,178,000 5,346,331
1993 124,829,000 5,325,305
1992 124,425,000 5,305,016
1991 123,964,000 5,303,294
1990 123,478,000 5,299,187
1989 123,069,000 5,275,942
1988 122,578,000 5,250,596
1987 122,069,000 5,222,840
1986 121,482,000 5,193,838
1985 120,837,000 5,161,768
1984 120,083,000 5,127,097
1983 119,307,000 5,091,971
1982 118,480,000 5,055,099
1981 117,661,000 5,016,105
1980 116,807,000 4,979,815
1979 115,890,000 4,938,973
1978 114,913,000 4,890,125
1977 113,872,000 4,840,501
1976 112,775,000 4,789,507
1975 111,573,000 4,739,105
1974 110,162,000 4,689,623
1973 108,707,000 4,641,445
1972 107,188,000 4,596,622
1971 105,697,000 4,557,449
1970 103,403,000 4,538,223
1969 102,219,000 4,518,607
1968 101,011,000 4,483,915
1967 99,879,000 4,449,367
1966 98,851,000 4,411,666
1965 97,952,000 4,370,983
1964 96,903,000 4,327,341
1963 95,900,000 4,282,017
1962 94,933,000 4,238,188
1961 94,055,000 4,191,667
1960 93,216,000 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/japan/slovakia | CC BY

From 2006 to 2016, the population of Japan decreased by 778,000 people (a 0.61% decline), while Slovakia gained 57,744 people (a 1.07% growth).

For the next 10 years, from 2016 to 2026, Japan lost 4,371,748 people (a 3.44% decline), while Slovakia's population decreased by 54,559 people (a 1% decline).

Japan was ranked 10th most populous country in 2006 and is 12th 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) Japan's population will shrink by 14.1% to 105,400,477 people with a rank change from 12th to 17th. The population of Slovakia will decrease by 9.27% to 4,877,755 people and rank change from 125th to 129th.

Both countries are in a period of decline and in 50 years are projected to lose 29.1% of the population in Japan and 25.3% in Slovakia.

Population growth rate by year

Japan
Factual

Projection
Slovakia
Factual

Projection
1x
Year Growth rate
Japan Slovakia
2100 -0.5% -0.65%
2099 -0.49% -0.65%
2098 -0.48% -0.64%
2097 -0.48% -0.64%
2096 -0.48% -0.64%
2095 -0.47% -0.64%
2094 -0.47% -0.64%
2093 -0.47% -0.65%
2092 -0.47% -0.65%
2091 -0.47% -0.66%
2090 -0.47% -0.67%
2089 -0.47% -0.67%
2088 -0.47% -0.68%
2087 -0.48% -0.7%
2086 -0.49% -0.71%
2085 -0.5% -0.72%
2084 -0.5% -0.74%
2083 -0.52% -0.75%
2082 -0.53% -0.76%
2081 -0.55% -0.78%
2080 -0.57% -0.79%
2079 -0.59% -0.81%
2078 -0.62% -0.82%
2077 -0.64% -0.83%
2076 -0.67% -0.85%
2075 -0.69% -0.85%
2074 -0.73% -0.86%
2073 -0.74% -0.87%
2072 -0.76% -0.87%
2071 -0.79% -0.87%
2070 -0.79% -0.86%
2069 -0.8% -0.86%
2068 -0.8% -0.85%
2067 -0.81% -0.83%
2066 -0.81% -0.82%
2065 -0.79% -0.81%
2064 -0.79% -0.79%
2063 -0.78% -0.77%
2062 -0.77% -0.75%
2061 -0.76% -0.73%
2060 -0.75% -0.71%
2059 -0.73% -0.69%
2058 -0.71% -0.66%
2057 -0.7% -0.64%
2056 -0.68% -0.62%
2055 -0.68% -0.6%
2054 -0.65% -0.59%
2053 -0.65% -0.57%
2052 -0.64% -0.56%
2051 -0.64% -0.54%
2050 -0.64% -0.53%
2049 -0.64% -0.52%
2048 -0.64% -0.51%
2047 -0.64% -0.51%
2046 -0.65% -0.5%
2045 -0.65% -0.5%
2044 -0.65% -0.49%
2043 -0.65% -0.48%
2042 -0.66% -0.48%
2041 -0.65% -0.47%
2040 -0.65% -0.46%
2039 -0.65% -0.45%
2038 -0.65% -0.43%
2037 -0.65% -0.42%
2036 -0.65% -0.4%
2035 -0.64% -0.38%
2034 -0.63% -0.36%
2033 -0.63% -0.34%
2032 -0.62% -0.32%
2031 -0.61% -0.29%
2030 -0.6% -0.26%
2029 -0.59% -0.23%
2028 -0.58% -0.2%
2027 -0.56% -0.16%
2026 -0.54% -0.69%
2025 -0.49% -0.15%
2024 -0.43% -0.09%
2023 -0.49% -0.09%
2022 -0.44% -0.28%
2021 -0.46% -0.21%
2020 -0.29% 0.09%
2019 -0.14% 0.14%
2018 -0.13% 0.14%
2017 -0.08% 0.16%
2016 -0.05% 0.13%
2015 -0.11% 0.1%
2014 -0.13% 0.1%
2013 -0.14% 0.11%
2012 -0.16% 0.17%
2011 -0.19% 0.13%
2010 0.02% 0.09%
2009 -0.01% 0.13%
2008 0.05% 0.09%
2007 0.11% 0.03%
2006 0.06% 0.005%
2005 0.009% 0.01%
2004 0.03% -0.02%
2003 0.21% -0.07%
2002 0.23% -0.04%
2001 0.24% -0.18%
2000 0.17% -0.14%
1999 0.18% 0.1%
1998 0.27% 0.13%
1997 0.24% 0.18%
1996 0.23% 0.21%
1995 0.23% 0.29%
1994 0.28% 0.39%
1993 0.32% 0.38%
1992 0.37% 0.03%
1991 0.39% 0.08%
1990 0.33% 0.44%
1989 0.4% 0.48%
1988 0.42% 0.53%
1987 0.48% 0.56%
1986 0.53% 0.62%
1985 0.63% 0.68%
1984 0.65% 0.69%
1983 0.7% 0.73%
1982 0.7% 0.78%
1981 0.73% 0.73%
1980 0.79% 0.83%
1979 0.85% 1%
1978 0.91% 1.03%
1977 0.97% 1.06%
1976 1.08% 1.06%
1975 1.28% 1.06%
1974 1.34% 1.04%
1973 1.42% 0.98%
1972 1.41% 0.86%
1971 2.22% 0.42%
1970 1.16% 0.43%
1969 1.2% 0.77%
1968 1.13% 0.78%
1967 1.04% 0.85%
1966 0.92% 0.93%
1965 1.08% 1.01%
1964 1.05% 1.06%
1963 1.02% 1.03%
1962 0.93% 1.11%
1961 0.9% 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/japan/slovakia | CC BY

In 2025, the population of Japan declined by 0.49%, while Slovakia's population declined by 0.15%.

Live population counters

Japan Slovakia
Current population
122704252
5376239
Population rank 12/197 125/197
Percent of world population 1.48% 0.06%
One net population change
52 seconds
1.06 hours
One birth every
44.6 seconds
11.4 minutes
One death every
19.1 seconds
9.79 minutes
Daily growth/decline -1,667 -23
Annual growth/decline -608,637 -8,256
Annual growth/decline rate -0.49% -0.15%
Population growth rate rank 183/197 170/197
One migration net change every
3.75 minutes
16.8 minutes
Annual migration change +140,579 -31,377
Net migration rank 10/196 166/196
Foreign-born residents 3,409,529 323,991
Foreign-born residents rank 19/195 96/195
Foreign-born share of population 2.8% 5.9%
Foreign-born share rank 120/195 88/195

Natural population change vs migration

Japan
Natural

Migration
Slovakia
Natural

Migration
1x
Year Population change
Japan Slovakia
Natural Migration Natural Migration
2025 - 140,579 - -31,377
2024 -942,213 153,357 -7,591 -21,027
2023 -871,617 175,003 -5,427 4,933
2022 -825,825 175,003 -7,062 92,314
2021 -640,976 -34,996 -16,886 -8,172
2020 -542,923 42,001 -2,184 4,350
2019 -531,858 318,190 3,818 3,128
2018 -456,520 320,601 3,268 3,446
2017 -406,310 322,564 4,351 3,279
2016 -343,106 314,732 5,431 3,487
2015 -292,424 168,896 2,170 2,549
2014 -267,279 58,109 3,793 -1,158
2013 -242,146 66,449 2,707 -1,181
2012 -229,733 67,904 3,245 871
2011 -204,533 97,720 9,177 -2,392
2010 -128,070 131,860 7,008 -1,814
2009 -76,828 125,450 8,619 -542
2008 -51,225 142,605 4,303 -495
2007 -25,600 138,024 537 -571
2006 12,785 130,065 537 -549
2005 -25,554 113,017 537 -561
2004 76,656 69,014 1,611 -522
2003 114,946 74,875 -537 -646
2002 178,423 60,864 -538 -580
2001 203,438 59,563 -1,076 -860
2000 228,317 23,468 2,155 -831
1999 202,610 56,901 3,777 -119
1998 265,440 45,912 4,312 -12
1997 277,325 43,366 6,999 247
1996 314,392 25,030 9,135 246
1995 276,039 87,714 9,115 -30
1994 363,017 154,214 14,970 -109
1993 312,073 168,836 20,769 72
1992 360,833 170,878 21,220 -201
1991 396,685 161,331 23,865 174
1990 407,478 124,582 25,436 -9,402
1989 467,662 31,202 26,380 -7,254
1988 527,085 51,154 30,979 -6,500
1987 598,138 28,001 31,859 -6,401
1986 631,706 27,987 34,279 -6,143
1985 676,687 -141,323 37,680 -6,068
1984 756,523 -273,686 38,966 -6,276
1983 775,495 -269,755 39,717 -6,361
1982 805,664 -288,550 41,958 -6,088
1981 811,861 -278,525 43,640 -5,821
1980 864,372 -92,314 44,320 -5,522
1979 950,298 -57,692 52,353 -4,712
1978 1,011,234 -47,996 52,324 -4,689
1977 1,070,397 -49,082 52,762 -4,621
1976 1,127,750 -34,976 54,121 -4,432
1975 1,204,989 107 52,604 -4,652
1974 1,332,960 -10,145 52,524 -4,190
1973 1,391,449 -34,674 49,199 -3,854
1972 1,372,006 -73,980 46,426 -3,516
1971 1,331,782 -107,778 40,105 -3,495
1970 1,230,496 33,731 38,575 -4,919
1969 1,195,962 49,447 39,312 -8,998
1968 1,191,930 43,593 38,113 -8,881
1967 1,258,475 29,632 41,824 -8,876
1966 682,072 68,934 45,440 -8,817
1965 1,126,448 -50,667 48,517 -8,707
1964 1,046,553 -100,696 54,092 -8,608
1963 987,770 -100,742 54,382 -8,548
1962 901,864 -57,075 49,587 -9,019
1961 893,522 -58,882 55,749 4,812
1960 894,874 -150,371 56,546 4,344

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

GeoRank.org/population/japan/slovakia | CC BY

Over the last 10 years, 75% of the population change in Japan is from natural causes (a loss of 5,853,772 people) and 25% is from migration (a gain of 1,955,351 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, 3,409,529 residents or 2.8% of the population were not native-born in Japan, compared to 323,991 people or 5.9% in Slovakia.

Biggest cities by population

Japan
City Population
Tokyo 14.3M
Yokohama 3.76M
Osaka 2.75M
Nagoya 2.33M
Sapporo 1.96M
Fukuoka 1.6M
Kawasaki 1.54M
Kobe 1.52M
Kyoto 1.46M
Saitama 1.33M
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/japan/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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