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Population in Japan compared to South Korea: Trends, Charts, Rankings

Updated on by Georank team

The latest officially reported population of Japan was 123,975,371 in 2024 vs 51,751,065 people in South Korea in 2024. In 2026, based on the adjusted UN estimation, the current Japan's population is 122,677,250 people compared to 51,649,918 in South Korea.

Population statistics:

  • Japan's population is 2.38 times bigger than South Korea's.
  • Japan is ranked the 12th most populous country in the world, while South Korea is the 31st.
  • The countries together account for 2.1% of the world: 1.48% for Japan vs 0.62% for South Korea.
  • For the last 10 years, Japan has had an average growth rate of -0.25% per year vs +0.24% in South Korea.
  • Since 2006, the population of Japan has decreased from 128M people to 123M (4.05% decline), while South Korea has grown from 48.4M to 51.6M (6.63% growth).

Japan vs South Korea: population by year and forecast

Japan
Factual

Projection
South Korea
Factual

Projection
1x
Year Population
Japan South Korea
2100 76,978,998 22,012,503
2099 77,363,458 22,335,528
2098 77,742,445 22,668,719
2097 78,118,375 23,009,661
2096 78,498,614 23,360,151
2095 78,875,245 23,722,747
2094 79,250,325 24,093,391
2093 79,628,057 24,473,038
2092 80,007,967 24,860,975
2091 80,383,529 25,255,379
2090 80,760,724 25,655,577
2089 81,140,553 26,060,945
2088 81,521,696 26,470,073
2087 81,908,373 26,884,813
2086 82,304,497 27,301,913
2085 82,709,534 27,723,736
2084 83,123,058 28,147,480
2083 83,544,006 28,578,182
2082 83,980,325 29,012,953
2081 84,429,305 29,456,022
2080 84,899,768 29,901,880
2079 85,387,247 30,352,062
2078 85,897,934 30,809,176
2077 86,434,291 31,273,700
2076 86,993,007 31,744,480
2075 87,577,777 32,221,226
2074 88,190,392 32,706,020
2073 88,834,763 33,196,556
2072 89,499,356 33,696,490
2071 90,184,464 34,203,935
2070 90,899,136 34,719,324
2069 91,625,421 35,241,850
2068 92,367,969 35,762,799
2067 93,113,499 36,292,307
2066 93,869,240 36,826,655
2065 94,633,430 37,368,086
2064 95,391,433 37,916,439
2063 96,148,081 38,469,051
2062 96,902,907 39,028,473
2061 97,654,031 39,584,621
2060 98,400,894 40,149,830
2059 99,144,216 40,712,514
2058 99,868,968 41,277,134
2057 100,585,601 41,833,887
2056 101,295,868 42,377,427
2055 101,989,736 42,909,302
2054 102,683,462 43,427,254
2053 103,359,083 43,938,741
2052 104,036,901 44,441,106
2051 104,706,698 44,923,604
2050 105,377,283 45,385,311
2049 106,053,011 45,832,153
2048 106,731,207 46,258,529
2047 107,419,237 46,668,898
2046 108,115,358 47,056,404
2045 108,820,982 47,433,205
2044 109,529,333 47,797,411
2043 110,245,586 48,144,730
2042 110,968,174 48,478,991
2041 111,704,629 48,806,273
2040 112,438,759 49,115,658
2039 113,175,948 49,412,830
2038 113,915,783 49,694,340
2037 114,662,374 49,957,504
2036 115,410,956 50,200,702
2035 116,162,381 50,426,000
2034 116,911,001 50,632,962
2033 117,652,676 50,821,090
2032 118,393,188 50,987,020
2031 119,127,425 51,134,940
2030 119,856,131 51,267,908
2029 120,574,242 51,385,868
2028 121,287,543 51,486,791
2027 121,989,133 51,576,746
2026 122,677,250 51,649,918
2025 123,339,586 51,710,062
2024 123,975,371 51,751,065
2023 124,516,650 51,712,619
2022 125,124,989 51,672,569
2021 125,681,593 51,769,539
2020 126,261,000 51,836,239
2019 126,633,000 51,764,822
2018 126,811,000 51,585,058
2017 126,972,000 51,361,911
2016 127,076,000 51,217,803
2015 127,141,000 51,014,947
2014 127,276,000 50,746,659
2013 127,445,000 50,428,893
2012 127,629,000 50,199,853
2011 127,833,000 49,936,638
2010 128,070,000 49,554,112
2009 128,047,000 49,307,835
2008 128,063,000 49,054,708
2007 128,001,000 48,683,638
2006 127,854,000 48,438,292
2005 127,773,000 48,184,561
2004 127,761,000 48,082,519
2003 127,718,000 47,892,330
2002 127,445,000 47,644,736
2001 127,149,000 47,370,164
2000 126,843,000 47,008,111
1999 126,631,000 46,616,677
1998 126,400,000 46,286,503
1997 126,057,000 45,953,580
1996 125,757,000 45,524,681
1995 125,472,000 45,092,991
1994 125,178,000 44,641,540
1993 124,829,000 44,194,628
1992 124,425,000 43,747,962
1991 123,964,000 43,295,704
1990 123,478,000 42,869,283
1989 123,069,000 42,449,038
1988 122,578,000 42,031,247
1987 122,069,000 41,621,690
1986 121,482,000 41,213,674
1985 120,837,000 40,805,744
1984 120,083,000 40,405,956
1983 119,307,000 39,910,403
1982 118,480,000 39,326,352
1981 117,661,000 38,723,248
1980 116,807,000 38,123,775
1979 115,890,000 37,534,236
1978 114,913,000 36,969,185
1977 113,872,000 36,411,795
1976 112,775,000 35,848,523
1975 111,573,000 35,280,725
1974 110,162,000 34,692,266
1973 108,707,000 34,103,149
1972 107,188,000 33,505,406
1971 105,697,000 32,882,704
1970 103,403,000 32,240,827
1969 102,219,000 31,544,266
1968 101,011,000 30,838,302
1967 99,879,000 30,130,983
1966 98,851,000 29,435,571
1965 97,952,000 28,704,674
1964 96,903,000 27,984,155
1963 95,900,000 27,261,747
1962 94,933,000 26,513,030
1961 94,055,000 25,765,673
1960 93,216,000 25,012,374

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/japan/south-korea | CC BY

From 2006 to 2016, the population of Japan decreased by 778,000 people (a 0.61% decline), while South Korea gained 2,779,511 people (a 5.74% growth).

For the next 10 years, from 2016 to 2026, Japan lost 4,398,750 people (a 3.46% decline), while South Korea's population increased by 432,115 people (a 0.84% growth).

Japan was ranked 10th most populous country in 2006 and is 12th in 2026. South Korea was ranked 25th in 2006 and ranked 31st now.

The UN's World Population Prospects forecasts that in 24 years (in 2050) Japan's population will shrink by 14.1% to 105,377,283 people with a rank change from 12th to 17th. The population of South Korea will decrease by 12.1% to 45,385,311 people and rank change from 31st to 48th.

Both countries are in a period of decline and in 50 years are projected to lose 29.1% of the population in Japan and 38.5% in South Korea.

Population growth rate by year

Japan
Factual

Projection
South Korea
Factual

Projection
1x
Year Growth rate
Japan South Korea
2100 -0.5% -1.45%
2099 -0.49% -1.47%
2098 -0.48% -1.48%
2097 -0.48% -1.5%
2096 -0.48% -1.53%
2095 -0.47% -1.54%
2094 -0.47% -1.55%
2093 -0.47% -1.56%
2092 -0.47% -1.56%
2091 -0.47% -1.56%
2090 -0.47% -1.56%
2089 -0.47% -1.55%
2088 -0.47% -1.54%
2087 -0.48% -1.53%
2086 -0.49% -1.52%
2085 -0.5% -1.51%
2084 -0.5% -1.51%
2083 -0.52% -1.5%
2082 -0.53% -1.5%
2081 -0.55% -1.49%
2080 -0.57% -1.48%
2079 -0.59% -1.48%
2078 -0.62% -1.49%
2077 -0.64% -1.48%
2076 -0.67% -1.48%
2075 -0.69% -1.48%
2074 -0.73% -1.48%
2073 -0.74% -1.48%
2072 -0.76% -1.48%
2071 -0.79% -1.48%
2070 -0.79% -1.48%
2069 -0.8% -1.46%
2068 -0.8% -1.46%
2067 -0.81% -1.45%
2066 -0.81% -1.45%
2065 -0.79% -1.45%
2064 -0.79% -1.44%
2063 -0.78% -1.43%
2062 -0.77% -1.4%
2061 -0.76% -1.41%
2060 -0.75% -1.38%
2059 -0.73% -1.37%
2058 -0.71% -1.33%
2057 -0.7% -1.28%
2056 -0.68% -1.24%
2055 -0.68% -1.19%
2054 -0.65% -1.16%
2053 -0.65% -1.13%
2052 -0.64% -1.07%
2051 -0.64% -1.02%
2050 -0.64% -0.97%
2049 -0.64% -0.92%
2048 -0.64% -0.88%
2047 -0.64% -0.82%
2046 -0.65% -0.79%
2045 -0.65% -0.76%
2044 -0.65% -0.72%
2043 -0.65% -0.69%
2042 -0.66% -0.67%
2041 -0.65% -0.63%
2040 -0.65% -0.6%
2039 -0.65% -0.57%
2038 -0.65% -0.53%
2037 -0.65% -0.48%
2036 -0.65% -0.45%
2035 -0.64% -0.41%
2034 -0.63% -0.37%
2033 -0.63% -0.33%
2032 -0.62% -0.29%
2031 -0.61% -0.26%
2030 -0.6% -0.23%
2029 -0.59% -0.2%
2028 -0.58% -0.17%
2027 -0.56% -0.14%
2026 -0.54% -0.12%
2025 -0.51% -0.08%
2024 -0.43% 0.07%
2023 -0.49% 0.08%
2022 -0.44% -0.19%
2021 -0.46% -0.13%
2020 -0.29% 0.14%
2019 -0.14% 0.35%
2018 -0.13% 0.43%
2017 -0.08% 0.28%
2016 -0.05% 0.4%
2015 -0.11% 0.53%
2014 -0.13% 0.63%
2013 -0.14% 0.46%
2012 -0.16% 0.53%
2011 -0.19% 0.77%
2010 0.02% 0.5%
2009 -0.01% 0.52%
2008 0.05% 0.76%
2007 0.11% 0.51%
2006 0.06% 0.53%
2005 0.009% 0.21%
2004 0.03% 0.4%
2003 0.21% 0.52%
2002 0.23% 0.58%
2001 0.24% 0.77%
2000 0.17% 0.84%
1999 0.18% 0.71%
1998 0.27% 0.72%
1997 0.24% 0.94%
1996 0.23% 0.96%
1995 0.23% 1.01%
1994 0.28% 1.01%
1993 0.32% 1.02%
1992 0.37% 1.04%
1991 0.39% 0.99%
1990 0.33% 0.99%
1989 0.4% 0.99%
1988 0.42% 0.98%
1987 0.48% 0.99%
1986 0.53% 1%
1985 0.63% 0.99%
1984 0.65% 1.24%
1983 0.7% 1.49%
1982 0.7% 1.56%
1981 0.73% 1.57%
1980 0.79% 1.57%
1979 0.85% 1.53%
1978 0.91% 1.53%
1977 0.97% 1.57%
1976 1.08% 1.61%
1975 1.28% 1.7%
1974 1.34% 1.73%
1973 1.42% 1.78%
1972 1.41% 1.89%
1971 2.22% 1.99%
1970 1.16% 2.21%
1969 1.2% 2.29%
1968 1.13% 2.35%
1967 1.04% 2.36%
1966 0.92% 2.55%
1965 1.08% 2.57%
1964 1.05% 2.65%
1963 1.02% 2.82%
1962 0.93% 2.9%
1961 0.9% 3.01%

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/japan/south-korea | CC BY

In 2024, the population of Japan declined by 0.43%, while South Korea's population grew by 0.07%.

Live population counters

Japan South Korea
Current population
122677250
51649918
Population rank 12/197 31/197
Percent of world population 1.48% 0.62%
One net population change
58.3 seconds
13.7 minutes
One birth every
42.2 seconds
2.26 minutes
One death every
19.5 seconds
1.69 minutes
Daily growth/decline -1,483 +105
Annual growth/decline -541,279 +38,446
Annual growth/decline rate -0.43% +0.07%
Population growth rate rank 185/197 160/197
One migration net change every
3.75 minutes
8.02 minutes
Annual migration change +140,579 +65,731
Net migration rank 10/196 20/196
Foreign-born residents 3,409,529 1,811,507
Foreign-born residents rank 19/195 40/195
Foreign-born share of population 2.8% 3.5%
Foreign-born share rank 120/195 111/195

Natural population change vs migration

Japan
Natural

Migration
South Korea
Natural

Migration
1x
Year Population change
Japan South Korea
Natural Migration Natural Migration
2025 - 140,579 - 65,731
2024 - 153,357 - 75,963
2023 -871,617 175,003 -77,569 87,800
2022 -825,825 175,003 -124,014 87,800
2021 -640,976 -34,996 -56,947 -16,778
2020 -542,923 42,001 -31,101 112,631
2019 -531,858 318,190 10,353 128,622
2018 -456,520 320,601 30,951 118,220
2017 -406,310 322,564 71,907 104,029
2016 -343,106 314,732 122,923 91,568
2015 -292,424 168,896 163,248 276,427
2014 -267,279 58,109 167,464 308,037
2013 -242,146 66,449 166,415 301,926
2012 -229,733 67,904 215,859 281,866
2011 -204,533 97,720 214,728 269,958
2010 -128,070 131,860 213,083 52,042
2009 -76,828 125,450 197,231 5,308
2008 -51,225 142,605 215,841 -19,630
2007 -25,600 138,024 248,286 -42,293
2006 12,785 130,065 203,441 -28,434
2005 -25,554 113,017 187,920 -47,821
2004 76,656 69,014 225,988 -42,549
2003 114,946 74,875 244,251 -31,994
2002 178,423 60,864 247,752 -18,105
2001 203,438 59,563 312,643 -28,006
2000 228,317 23,468 390,167 -84,960
1999 202,610 56,901 368,272 -107,448
1998 265,440 45,912 393,436 -98,044
1997 277,325 43,366 422,773 -109,130
1996 314,392 25,030 446,142 -115,705
1995 276,039 87,714 468,967 -208,491
1994 363,017 154,214 473,200 -208,309
1993 312,073 168,836 477,302 -222,802
1992 360,833 170,878 494,352 -265,849
1991 396,685 161,331 467,594 -270,754
1990 407,478 124,582 411,546 79,294
1989 467,662 31,202 403,266 186,120
1988 527,085 51,154 399,297 192,534
1987 598,138 28,001 378,758 198,057
1986 631,706 27,987 395,651 189,782
1985 676,687 -141,323 416,219 97,949
1984 756,523 -273,686 436,384 101,394
1983 775,495 -269,755 514,844 102,167
1982 805,664 -288,550 605,626 48,638
1981 811,861 -278,525 631,189 18,442
1980 864,372 -92,314 583,294 -148,341
1979 950,298 -57,692 623,068 -139,566
1978 1,011,234 -47,996 499,084 -85,721
1977 1,070,397 -49,082 578,947 -90,737
1976 1,127,750 -34,976 530,558 -92,314
1975 1,204,989 107 603,300 -52,332
1974 1,332,960 -10,145 673,030 27,005
1973 1,391,449 -34,674 699,115 35,779
1972 1,372,006 -73,980 740,469 25,382
1971 1,331,782 -107,778 789,185 -6,326
1970 1,230,496 33,731 747,987 -27,999
1969 1,195,962 49,447 694,227 -21,175
1968 1,191,930 43,593 684,487 -16,868
1967 1,258,475 29,632 692,169 -16,484
1966 682,072 68,934 623,534 -16,688
1965 1,126,448 -50,667 641,090 -146,386
1964 1,046,553 -100,696 655,501 -102,284
1963 987,770 -100,742 685,824 -80,226
1962 901,864 -57,075 712,590 -94,606
1961 893,522 -58,882 730,173 -93,179
1960 894,874 -150,371 728,010 47,245

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

GeoRank.org/population/japan/south-korea | CC BY

Over the last 10 years, 73.6% of the population change in Japan is from natural causes (a loss of 5,178,838 people) and 26.4% is from migration (a gain of 1,860,103 people). In South Korea 17.6% is from natural causes (a gain of 277,215 people) and 82.4% is from migration (a gain of 1,298,356 people).

As of 2024, 3,409,529 residents or 2.8% of the population were not native-born in Japan, compared to 1,811,507 people or 3.5% in South Korea.

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
South Korea
City Population
Seoul 9.67M
Busan 3.45M
Incheon 3.05M
Daegu 2.38M
Daejeon 1.48M
Gwangju 1.41M
Suwon 1.23M
Ulsan 1.13M
Yongin 1.08M
Goyang 1.06M

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/japan/south-korea | 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. Wikidata (2026, retrieved 2026-02-08)
  5. Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-02-20)

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