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

Updated on by Georank

The latest officially reported population of Japan was 123,366,734 in 2025 vs 12,188,788 people in South Sudan in 2025. In 2026, based on the adjusted UN estimation, the current Japan's population is 122,704,252 people compared to 12,565,048 in South Sudan.

Population statistics:

  • Japan's population is 9.77 times bigger than South Sudan's.
  • Japan is ranked the 12th most populous country in the world, while South Sudan is the 80th.
  • The countries together account for 1.63% of the world: 1.48% for Japan vs 0.15% for South Sudan.
  • For the last 10 years, Japan has had an average growth rate of -0.28% per year vs +0.78% in South Sudan.
  • Since 2006, the population of Japan has decreased from 128M people to 123M (4.03% decline), while South Sudan has grown from 7.98M to 12.6M (57.5% growth).

Japan vs South Sudan: population by year and forecast

Japan
Factual

Projection
South Sudan
Factual

Projection
1x
Year Population
Japan South Sudan
2100 76,995,942 24,078,379
2099 77,380,486 24,072,957
2098 77,759,557 24,054,947
2097 78,135,569 24,056,753
2096 78,515,892 24,045,972
2095 78,892,606 24,037,837
2094 79,267,768 24,039,267
2093 79,645,584 24,030,512
2092 80,025,578 24,010,555
2091 80,401,222 23,991,816
2090 80,778,500 23,970,012
2089 81,158,413 23,929,017
2088 81,539,639 23,883,712
2087 81,926,401 23,848,809
2086 82,322,612 23,794,890
2085 82,727,738 23,750,772
2084 83,141,354 23,678,728
2083 83,562,394 23,609,290
2082 83,998,809 23,532,790
2081 84,447,888 23,458,146
2080 84,918,455 23,383,482
2079 85,406,042 23,286,011
2078 85,916,840 23,188,860
2077 86,453,316 23,078,416
2076 87,012,155 22,979,198
2075 87,597,053 22,860,496
2074 88,209,803 22,718,148
2073 88,854,316 22,575,682
2072 89,519,055 22,431,004
2071 90,204,314 22,280,140
2070 90,919,143 22,143,813
2069 91,645,589 21,995,874
2068 92,388,299 21,822,076
2067 93,133,993 21,654,546
2066 93,889,902 21,489,275
2065 94,654,259 21,309,913
2064 95,412,429 21,134,522
2063 96,169,244 20,957,705
2062 96,924,236 20,777,701
2061 97,675,525 20,601,672
2060 98,422,553 20,423,629
2059 99,166,038 20,227,862
2058 99,890,950 20,041,880
2057 100,607,740 19,846,671
2056 101,318,164 19,652,407
2055 102,012,184 19,457,411
2054 102,706,063 19,250,667
2053 103,381,833 19,053,773
2052 104,059,800 18,833,795
2051 104,729,745 18,626,605
2050 105,400,477 18,427,690
2049 106,076,354 18,224,430
2048 106,754,699 18,014,650
2047 107,442,881 17,799,982
2046 108,139,155 17,572,953
2045 108,844,934 17,348,901
2044 109,553,441 17,115,914
2043 110,269,851 16,882,303
2042 110,992,599 16,639,465
2041 111,729,216 16,390,966
2040 112,463,507 16,137,104
2039 113,200,859 15,884,330
2038 113,940,856 15,622,514
2037 114,687,611 15,358,539
2036 115,436,359 15,085,936
2035 116,187,949 14,810,066
2034 116,936,734 14,538,365
2033 117,678,572 14,273,128
2032 118,419,247 14,002,178
2031 119,153,646 13,725,779
2030 119,882,512 13,460,850
2029 120,600,781 13,201,804
2028 121,314,239 12,942,501
2027 122,015,984 12,688,278
2026 122,704,252 12,434,895
2025 123,366,734 12,188,788
2024 123,975,371 11,943,408
2023 124,516,650 11,483,374
2022 125,124,989 11,021,177
2021 125,681,593 10,865,780
2020 126,261,000 10,698,467
2019 126,633,000 10,423,384
2018 126,811,000 10,122,977
2017 126,972,000 10,259,154
2016 127,076,000 10,830,102
2015 127,141,000 11,107,561
2014 127,276,000 11,235,073
2013 127,445,000 11,166,275
2012 127,629,000 10,756,240
2011 127,833,000 10,288,109
2010 128,070,000 9,745,953
2009 128,047,000 9,243,556
2008 128,063,000 8,817,647
2007 128,001,000 8,388,788
2006 127,854,000 7,976,526
2005 127,773,000 7,590,143
2004 127,761,000 7,233,041
2003 127,718,000 6,903,127
2002 127,445,000 6,596,806
2001 127,149,000 6,308,391
2000 126,843,000 6,032,267
1999 126,631,000 5,771,628
1998 126,400,000 5,620,068
1997 126,057,000 5,509,136
1996 125,757,000 5,356,925
1995 125,472,000 5,225,836
1994 125,178,000 5,071,184
1993 124,829,000 4,956,002
1992 124,425,000 4,909,749
1991 123,964,000 4,836,677
1990 123,478,000 4,737,633
1989 123,069,000 4,713,229
1988 122,578,000 4,848,029
1987 122,069,000 4,962,395
1986 121,482,000 4,921,240
1985 120,837,000 4,834,296
1984 120,083,000 4,750,627
1983 119,307,000 4,661,574
1982 118,480,000 4,557,686
1981 117,661,000 4,447,272
1980 116,807,000 4,339,030
1979 115,890,000 4,232,605
1978 114,913,000 4,127,657
1977 113,872,000 4,024,032
1976 112,775,000 3,921,910
1975 111,573,000 3,821,494
1974 110,162,000 3,723,259
1973 108,707,000 3,627,383
1972 107,188,000 3,542,497
1971 105,697,000 3,468,646
1970 103,403,000 3,409,614
1969 102,219,000 3,365,533
1968 101,011,000 3,321,528
1967 99,879,000 3,277,648
1966 98,851,000 3,236,423
1965 97,952,000 3,189,835
1964 96,903,000 3,129,918
1963 95,900,000 3,072,669
1962 94,933,000 3,024,308
1961 94,055,000 2,976,724
1960 93,216,000 2,931,559

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/south-sudan | CC BY

From 2006 to 2016, the population of Japan decreased by 778,000 people (a 0.61% decline), while South Sudan gained 2,853,576 people (a 35.8% growth).

For the next 10 years, from 2016 to 2026, Japan lost 4,371,748 people (a 3.44% decline), while South Sudan's population increased by 1,734,946 people (a 16% growth).

Japan was ranked 10th most populous country in 2006 and is 12th in 2026. South Sudan was ranked 92nd in 2006 and ranked 80th 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 South Sudan will increase by 46.7% to 18,427,690 people and rank change from 80th to 78th.

South Sudan is projected to reach its peak in 2100 at 24.1M people, while Japan's population already peaked in 2010 at 128M people and is projected to decrease to 77M people by 2100.

Population growth rate by year

Japan
Factual

Projection
South Sudan
Factual

Projection
1x
Year Growth rate
Japan South Sudan
2100 -0.5% 0.02%
2099 -0.49% 0.07%
2098 -0.48% -0.008%
2097 -0.48% 0.04%
2096 -0.48% 0.03%
2095 -0.47% -0.006%
2094 -0.47% 0.04%
2093 -0.47% 0.08%
2092 -0.47% 0.08%
2091 -0.47% 0.09%
2090 -0.47% 0.17%
2089 -0.47% 0.19%
2088 -0.47% 0.15%
2087 -0.48% 0.23%
2086 -0.49% 0.19%
2085 -0.5% 0.3%
2084 -0.5% 0.29%
2083 -0.52% 0.33%
2082 -0.53% 0.32%
2081 -0.55% 0.32%
2080 -0.57% 0.42%
2079 -0.59% 0.42%
2078 -0.62% 0.48%
2077 -0.64% 0.43%
2076 -0.67% 0.52%
2075 -0.69% 0.63%
2074 -0.73% 0.63%
2073 -0.74% 0.64%
2072 -0.76% 0.68%
2071 -0.79% 0.62%
2070 -0.79% 0.67%
2069 -0.8% 0.8%
2068 -0.8% 0.77%
2067 -0.81% 0.77%
2066 -0.81% 0.84%
2065 -0.79% 0.83%
2064 -0.79% 0.84%
2063 -0.78% 0.87%
2062 -0.77% 0.85%
2061 -0.76% 0.87%
2060 -0.75% 0.97%
2059 -0.73% 0.93%
2058 -0.71% 0.98%
2057 -0.7% 0.99%
2056 -0.68% 1%
2055 -0.68% 1.07%
2054 -0.65% 1.03%
2053 -0.65% 1.17%
2052 -0.64% 1.11%
2051 -0.64% 1.08%
2050 -0.64% 1.12%
2049 -0.64% 1.16%
2048 -0.64% 1.21%
2047 -0.64% 1.29%
2046 -0.65% 1.29%
2045 -0.65% 1.36%
2044 -0.65% 1.38%
2043 -0.65% 1.46%
2042 -0.66% 1.52%
2041 -0.65% 1.57%
2040 -0.65% 1.59%
2039 -0.65% 1.68%
2038 -0.65% 1.72%
2037 -0.65% 1.81%
2036 -0.65% 1.86%
2035 -0.64% 1.87%
2034 -0.63% 1.86%
2033 -0.63% 1.94%
2032 -0.62% 2.01%
2031 -0.61% 1.97%
2030 -0.6% 1.96%
2029 -0.59% 2%
2028 -0.58% 2%
2027 -0.56% 2.04%
2026 -0.54% 2.02%
2025 -0.49% 2.05%
2024 -0.43% 4.01%
2023 -0.49% 4.19%
2022 -0.44% 1.43%
2021 -0.46% 1.56%
2020 -0.29% 2.64%
2019 -0.14% 2.97%
2018 -0.13% -1.33%
2017 -0.08% -5.27%
2016 -0.05% -2.5%
2015 -0.11% -1.13%
2014 -0.13% 0.62%
2013 -0.14% 3.81%
2012 -0.16% 4.55%
2011 -0.19% 5.56%
2010 0.02% 5.44%
2009 -0.01% 4.83%
2008 0.05% 5.11%
2007 0.11% 5.17%
2006 0.06% 5.09%
2005 0.009% 4.94%
2004 0.03% 4.78%
2003 0.21% 4.64%
2002 0.23% 4.57%
2001 0.24% 4.58%
2000 0.17% 4.52%
1999 0.18% 2.7%
1998 0.27% 2.01%
1997 0.24% 2.84%
1996 0.23% 2.51%
1995 0.23% 3.05%
1994 0.28% 2.32%
1993 0.32% 0.94%
1992 0.37% 1.51%
1991 0.39% 2.09%
1990 0.33% 0.52%
1989 0.4% -2.78%
1988 0.42% -2.3%
1987 0.48% 0.84%
1986 0.53% 1.8%
1985 0.63% 1.76%
1984 0.65% 1.91%
1983 0.7% 2.28%
1982 0.7% 2.48%
1981 0.73% 2.49%
1980 0.79% 2.51%
1979 0.85% 2.54%
1978 0.91% 2.58%
1977 0.97% 2.6%
1976 1.08% 2.63%
1975 1.28% 2.64%
1974 1.34% 2.64%
1973 1.42% 2.4%
1972 1.41% 2.13%
1971 2.22% 1.73%
1970 1.16% 1.31%
1969 1.2% 1.32%
1968 1.13% 1.34%
1967 1.04% 1.27%
1966 0.92% 1.46%
1965 1.08% 1.91%
1964 1.05% 1.86%
1963 1.02% 1.6%
1962 0.93% 1.6%
1961 0.9% 1.54%

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/south-sudan | CC BY

In 2025, the population of Japan declined by 0.49%, while South Sudan's population grew by 2.05%.

Live population counters

Japan South Sudan
Current population
122704252
12565048
Population rank 12/197 80/197
Percent of world population 1.48% 0.15%
One net population change
52 seconds
2.15 minutes
One birth every
44.6 seconds
1.51 minutes
One death every
19.1 seconds
4.48 minutes
Daily growth/decline -1,667 +672
Annual growth/decline -608,637 +245,380
Annual growth/decline rate -0.49% +2.05%
Population growth rate rank 183/197 48/197
One migration net change every
3.75 minutes
1.43 hours
Annual migration change +140,579 +6,145
Net migration rank 10/196 50/196
Foreign-born residents 3,409,529 914,001
Foreign-born residents rank 19/195 62/195
Foreign-born share of population 2.8% 7.7%
Foreign-born share rank 120/195 77/195

Natural population change vs migration

Japan
Natural

Migration
South Sudan
Natural

Migration
1x
Year Population change
Japan South Sudan
Natural Migration Natural Migration
2025 - 140,579 - 6,145
2024 -942,213 153,357 231,714 15,374
2023 -871,617 175,003 217,966 455,000
2022 -825,825 175,003 211,166 40,259
2021 -640,976 -34,996 213,567 -154,359
2020 -542,923 42,001 212,332 62,935
2019 -531,858 318,190 209,708 65,198
2018 -456,520 320,601 168,497 157,408
2017 -406,310 322,564 72,193 -670,477
2016 -343,106 314,732 110,553 -654,225
2015 -292,424 168,896 148,542 -159,822
2014 -267,279 58,109 227,611 -471,523
2013 -242,146 66,449 315,983 65,337
2012 -229,733 67,904 312,974 125,771
2011 -204,533 97,720 303,181 194,325
2010 -128,070 131,860 287,409 299,402
2009 -76,828 125,450 278,859 139,129
2008 -51,225 142,605 268,268 165,557
2007 -25,600 138,024 256,546 167,350
2006 12,785 130,065 246,706 153,926
2005 -25,554 113,017 239,272 132,869
2004 76,656 69,014 231,877 110,182
2003 114,946 74,875 225,822 91,951
2002 178,423 60,864 212,014 82,847
2001 203,438 59,563 204,108 77,856
2000 228,317 23,468 196,055 74,227
1999 202,610 56,901 180,721 70,271
1998 265,440 45,912 -12,157 64,285
1997 277,325 43,366 121,454 48,280
1996 314,392 25,030 116,728 17,953
1995 276,039 87,714 110,417 17,077
1994 363,017 154,214 165,407 16,407
1993 312,073 168,836 32,779 15,772
1992 360,833 170,878 28,874 15,077
1991 396,685 161,331 87,873 14,327
1990 407,478 124,582 82,900 12,988
1989 467,662 31,202 83,735 -130,821
1988 527,085 51,154 -125,447 -97,065
1987 598,138 28,001 5,756 -11,976
1986 631,706 27,987 99,502 -10,973
1985 676,687 -141,323 95,342 -9,986
1984 756,523 -273,686 90,970 -8,984
1983 775,495 -269,755 104,107 -7,986
1982 805,664 -288,550 118,641 -6,983
1981 811,861 -278,525 115,163 -5,994
1980 864,372 -92,314 112,307 -4,997
1979 950,298 -57,692 109,540 -3,997
1978 1,011,234 -47,996 107,352 -2,998
1977 1,070,397 -49,082 104,886 -1,997
1976 1,127,750 -34,976 102,346 -995
1975 1,204,989 107 99,882 -395
1974 1,332,960 -10,145 97,181 -192
1973 1,391,449 -34,674 94,765 0
1972 1,372,006 -73,980 74,803 193
1971 1,331,782 -107,778 72,308 394
1970 1,230,496 33,731 44,776 587
1969 1,195,962 49,447 42,015 786
1968 1,191,930 43,593 44,213 995
1967 1,258,475 29,632 41,357 1,194
1966 682,072 68,934 38,523 1,386
1965 1,126,448 -50,667 51,682 1,591
1964 1,046,553 -100,696 64,786 1,785
1963 987,770 -100,742 46,333 1,591
1962 901,864 -57,075 47,406 1,386
1961 893,522 -58,882 45,186 1,194
1960 894,874 -150,371 42,945 995

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

GeoRank.org/population/japan/south-sudan | 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 South Sudan 68.1% is from natural causes (a gain of 1,796,238 people) and 31.9% is from migration (a loss of 842,709 people).

As of 2024, 3,409,529 residents or 2.8% of the population were not native-born in Japan, compared to 914,001 people or 7.7% in South Sudan.

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 Sudan
City Population
Juba 500K
Wau 321K
Bor 315K
Malakal 147K
Yambio 130K

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

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