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

Updated on by Georank

The latest officially reported population of Japan was 123,366,734 in 2025 vs 70,545,865 people in Tanzania in 2025. In 2026, based on the adjusted UN estimation, the current Japan's population is 122,704,252 people compared to 73,639,263 in Tanzania.

Population statistics:

  • Japan's population is 1.67 times bigger than Tanzania's.
  • Japan is ranked the 12th most populous country in the world, while Tanzania is the 20th.
  • The countries together account for 2.36% of the world: 1.48% for Japan vs 0.89% for Tanzania.
  • For the last 10 years, Japan has had an average growth rate of -0.28% per year vs +3.11% in Tanzania.
  • Since 2006, the population of Japan has decreased from 128M people to 123M (4.03% decline), while Tanzania has grown from 40.3M to 73.6M (82.8% growth).

Japan vs Tanzania: population by year and forecast

Japan
Factual

Projection
Tanzania
Factual

Projection
1x
Year Population
Japan Tanzania
2100 76,995,942 265,471,550
2099 77,380,486 263,137,702
2098 77,759,557 260,784,676
2097 78,135,569 258,387,890
2096 78,515,892 255,972,277
2095 78,892,606 253,543,248
2094 79,267,768 251,095,452
2093 79,645,584 248,605,184
2092 80,025,578 246,083,651
2091 80,401,222 243,533,968
2090 80,778,500 240,979,094
2089 81,158,413 238,393,867
2088 81,539,639 235,775,056
2087 81,926,401 233,145,231
2086 82,322,612 230,474,072
2085 82,727,738 227,778,580
2084 83,141,354 225,090,075
2083 83,562,394 222,400,079
2082 83,998,809 219,697,321
2081 84,447,888 216,974,796
2080 84,918,455 214,235,505
2079 85,406,042 211,466,096
2078 85,916,840 208,688,171
2077 86,453,316 205,898,494
2076 87,012,155 203,086,766
2075 87,597,053 200,278,383
2074 88,209,803 197,449,196
2073 88,854,316 194,624,081
2072 89,519,055 191,805,820
2071 90,204,314 188,974,004
2070 90,919,143 186,134,634
2069 91,645,589 183,293,747
2068 92,388,299 180,458,385
2067 93,133,993 177,622,538
2066 93,889,902 174,786,430
2065 94,654,259 171,897,059
2064 95,412,429 169,048,435
2063 96,169,244 166,202,091
2062 96,924,236 163,354,473
2061 97,675,525 160,521,858
2060 98,422,553 157,707,240
2059 99,166,038 154,905,240
2058 99,890,950 152,106,040
2057 100,607,740 149,311,257
2056 101,318,164 146,505,507
2055 102,012,184 143,722,840
2054 102,706,063 140,970,467
2053 103,381,833 138,249,490
2052 104,059,800 135,540,803
2051 104,729,745 132,838,721
2050 105,400,477 130,145,345
2049 106,076,354 127,483,126
2048 106,754,699 124,809,212
2047 107,442,881 122,146,647
2046 108,139,155 119,511,124
2045 108,844,934 116,903,642
2044 109,553,441 114,318,843
2043 110,269,851 111,765,580
2042 110,992,599 109,231,423
2041 111,729,216 106,738,458
2040 112,463,507 104,262,479
2039 113,200,859 101,804,600
2038 113,940,856 99,370,760
2037 114,687,611 96,974,485
2036 115,436,359 94,592,848
2035 116,187,949 92,248,476
2034 116,936,734 89,920,872
2033 117,678,572 87,646,627
2032 118,419,247 85,401,853
2031 119,153,646 83,172,579
2030 119,882,512 80,989,443
2029 120,600,781 78,830,947
2028 121,314,239 76,723,335
2027 122,015,984 74,639,948
2026 122,704,252 72,582,361
2025 123,366,734 70,545,865
2024 123,975,371 68,560,157
2023 124,516,650 66,617,606
2022 125,124,989 64,711,821
2021 125,681,593 62,830,412
2020 126,261,000 60,972,798
2019 126,633,000 59,174,891
2018 126,811,000 57,437,145
2017 126,972,000 55,652,890
2016 127,076,000 53,824,013
2015 127,141,000 52,020,962
2014 127,276,000 50,351,512
2013 127,445,000 48,824,128
2012 127,629,000 47,374,260
2011 127,833,000 46,029,367
2010 128,070,000 44,758,488
2009 128,047,000 43,633,982
2008 128,063,000 42,570,728
2007 128,001,000 41,435,512
2006 127,854,000 40,294,902
2005 127,773,000 39,182,076
2004 127,761,000 38,109,668
2003 127,718,000 37,089,555
2002 127,445,000 36,121,304
2001 127,149,000 35,198,299
2000 126,843,000 34,260,139
1999 126,631,000 33,300,330
1998 126,400,000 32,420,458
1997 126,057,000 31,578,089
1996 125,757,000 30,945,762
1995 125,472,000 30,383,497
1994 125,178,000 29,442,356
1993 124,829,000 28,332,692
1992 124,425,000 27,457,588
1991 123,964,000 26,780,436
1990 123,478,000 26,110,207
1989 123,069,000 25,438,759
1988 122,578,000 24,769,686
1987 122,069,000 24,030,378
1986 121,482,000 23,258,959
1985 120,837,000 22,501,693
1984 120,083,000 21,779,066
1983 119,307,000 21,079,874
1982 118,480,000 20,398,571
1981 117,661,000 19,784,703
1980 116,807,000 19,189,769
1979 115,890,000 18,592,038
1978 114,913,000 17,976,566
1977 113,872,000 17,352,929
1976 112,775,000 16,736,211
1975 111,573,000 16,138,361
1974 110,162,000 15,561,630
1973 108,707,000 15,010,101
1972 107,188,000 14,479,308
1971 105,697,000 13,971,451
1970 103,403,000 13,492,677
1969 102,219,000 13,036,700
1968 101,011,000 12,602,076
1967 99,879,000 12,200,109
1966 98,851,000 11,827,459
1965 97,952,000 11,470,728
1964 96,903,000 11,127,826
1963 95,900,000 10,799,528
1962 94,933,000 10,487,756
1961 94,055,000 10,187,886
1960 93,216,000 9,901,419

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/tanzania | CC BY

From 2006 to 2016, the population of Japan decreased by 778,000 people (a 0.61% decline), while Tanzania gained 13,529,111 people (a 33.6% growth).

For the next 10 years, from 2016 to 2026, Japan lost 4,371,748 people (a 3.44% decline), while Tanzania's population increased by 19,815,250 people (a 36.8% growth).

Japan was ranked 10th most populous country in 2006 and is 12th in 2026. Tanzania was ranked 30th in 2006 and ranked 20th 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 Tanzania will increase by 76.7% to 130,145,345 people and rank change from 20th to 15th.

Tanzania is projected to reach its peak in 2100 at 265M 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
Tanzania
Factual

Projection
1x
Year Growth rate
Japan Tanzania
2100 -0.5% 0.89%
2099 -0.49% 0.9%
2098 -0.48% 0.93%
2097 -0.48% 0.94%
2096 -0.48% 0.96%
2095 -0.47% 0.97%
2094 -0.47% 1%
2093 -0.47% 1.02%
2092 -0.47% 1.05%
2091 -0.47% 1.06%
2090 -0.47% 1.08%
2089 -0.47% 1.11%
2088 -0.47% 1.13%
2087 -0.48% 1.16%
2086 -0.49% 1.18%
2085 -0.5% 1.19%
2084 -0.5% 1.21%
2083 -0.52% 1.23%
2082 -0.53% 1.25%
2081 -0.55% 1.28%
2080 -0.57% 1.31%
2079 -0.59% 1.33%
2078 -0.62% 1.35%
2077 -0.64% 1.38%
2076 -0.67% 1.4%
2075 -0.69% 1.43%
2074 -0.73% 1.45%
2073 -0.74% 1.47%
2072 -0.76% 1.5%
2071 -0.79% 1.53%
2070 -0.79% 1.55%
2069 -0.8% 1.57%
2068 -0.8% 1.6%
2067 -0.81% 1.62%
2066 -0.81% 1.68%
2065 -0.79% 1.69%
2064 -0.79% 1.71%
2063 -0.78% 1.74%
2062 -0.77% 1.76%
2061 -0.76% 1.78%
2060 -0.75% 1.81%
2059 -0.73% 1.84%
2058 -0.71% 1.87%
2057 -0.7% 1.92%
2056 -0.68% 1.94%
2055 -0.68% 1.95%
2054 -0.65% 1.97%
2053 -0.65% 2%
2052 -0.64% 2.03%
2051 -0.64% 2.07%
2050 -0.64% 2.09%
2049 -0.64% 2.14%
2048 -0.64% 2.18%
2047 -0.64% 2.21%
2046 -0.65% 2.23%
2045 -0.65% 2.26%
2044 -0.65% 2.28%
2043 -0.65% 2.32%
2042 -0.66% 2.34%
2041 -0.65% 2.37%
2040 -0.65% 2.41%
2039 -0.65% 2.45%
2038 -0.65% 2.47%
2037 -0.65% 2.52%
2036 -0.65% 2.54%
2035 -0.64% 2.59%
2034 -0.63% 2.59%
2033 -0.63% 2.63%
2032 -0.62% 2.68%
2031 -0.61% 2.7%
2030 -0.6% 2.74%
2029 -0.59% 2.75%
2028 -0.58% 2.79%
2027 -0.56% 2.83%
2026 -0.54% 2.89%
2025 -0.49% 2.9%
2024 -0.43% 2.92%
2023 -0.49% 2.95%
2022 -0.44% 2.99%
2021 -0.46% 3.05%
2020 -0.29% 3.04%
2019 -0.14% 3.03%
2018 -0.13% 3.21%
2017 -0.08% 3.4%
2016 -0.05% 3.47%
2015 -0.11% 3.32%
2014 -0.13% 3.13%
2013 -0.14% 3.06%
2012 -0.16% 2.92%
2011 -0.19% 2.84%
2010 0.02% 2.58%
2009 -0.01% 2.5%
2008 0.05% 2.74%
2007 0.11% 2.83%
2006 0.06% 2.84%
2005 0.009% 2.81%
2004 0.03% 2.75%
2003 0.21% 2.68%
2002 0.23% 2.62%
2001 0.24% 2.74%
2000 0.17% 2.88%
1999 0.18% 2.71%
1998 0.27% 2.67%
1997 0.24% 2.04%
1996 0.23% 1.85%
1995 0.23% 3.2%
1994 0.28% 3.92%
1993 0.32% 3.19%
1992 0.37% 2.53%
1991 0.39% 2.57%
1990 0.33% 2.64%
1989 0.4% 2.7%
1988 0.42% 3.08%
1987 0.48% 3.32%
1986 0.53% 3.37%
1985 0.63% 3.32%
1984 0.65% 3.32%
1983 0.7% 3.34%
1982 0.7% 3.1%
1981 0.73% 3.1%
1980 0.79% 3.21%
1979 0.85% 3.42%
1978 0.91% 3.59%
1977 0.97% 3.68%
1976 1.08% 3.7%
1975 1.28% 3.71%
1974 1.34% 3.67%
1973 1.42% 3.67%
1972 1.41% 3.63%
1971 2.22% 3.55%
1970 1.16% 3.5%
1969 1.2% 3.45%
1968 1.13% 3.29%
1967 1.04% 3.15%
1966 0.92% 3.11%
1965 1.08% 3.08%
1964 1.05% 3.04%
1963 1.02% 2.97%
1962 0.93% 2.94%
1961 0.9% 2.89%

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/tanzania | CC BY

In 2025, the population of Japan declined by 0.49%, while Tanzania's population grew by 2.9%.

Live population counters

Japan Tanzania
Current population
122704252
73639263
Population rank 12/197 20/197
Percent of world population 1.48% 0.89%
One net population change
52 seconds
15.9 seconds
One birth every
44.6 seconds
13.2 seconds
One death every
19.1 seconds
1.34 minutes
Daily growth/decline -1,667 +5,440
Annual growth/decline -608,637 +1,985,708
Annual growth/decline rate -0.49% +2.9%
Population growth rate rank 183/197 16/197
One migration net change every
3.75 minutes
41.4 minutes
Annual migration change +140,579 -12,730
Net migration rank 10/196 139/196
Foreign-born residents 3,409,529 462,371
Foreign-born residents rank 19/195 83/195
Foreign-born share of population 2.8% 0.7%
Foreign-born share rank 120/195 167/195

Natural population change vs migration

Japan
Natural

Migration
Tanzania
Natural

Migration
1x
Year Population change
Japan Tanzania
Natural Migration Natural Migration
2025 - 140,579 - -12,730
2024 -942,213 153,357 1,993,730 -29,865
2023 -871,617 175,003 1,960,623 -39,388
2022 -825,825 175,003 1,927,960 -37,557
2021 -640,976 -34,996 1,880,137 -7,704
2020 -542,923 42,001 1,861,377 -18,587
2019 -531,858 318,190 1,816,669 -63,602
2018 -456,520 320,601 1,777,852 -55,444
2017 -406,310 322,564 1,726,909 119,142
2016 -343,106 314,732 1,659,502 152,194
2015 -292,424 168,896 1,592,882 201,495
2014 -267,279 58,109 1,565,630 -21,083
2013 -242,146 66,449 1,509,008 1,241
2012 -229,733 67,904 1,439,325 -49,875
2011 -204,533 97,720 1,384,886 -84,546
2010 -128,070 131,860 1,363,477 -122,020
2009 -76,828 125,450 1,332,015 -324,478
2008 -51,225 142,605 1,303,728 -184,816
2007 -25,600 138,024 1,278,285 -126,793
2006 12,785 130,065 1,257,927 -128,231
2005 -25,554 113,017 1,224,165 -128,251
2004 76,656 69,014 1,175,379 -126,490
2003 114,946 74,875 1,118,435 -127,101
2002 178,423 60,864 1,063,195 -118,047
2001 203,438 59,563 1,026,242 -125,375
2000 228,317 23,468 985,185 -9,701
1999 202,610 56,901 948,659 -4,489
1998 265,440 45,912 920,806 -105,184
1997 277,325 43,366 882,544 -13,400
1996 314,392 25,030 868,524 -473,007
1995 276,039 87,714 838,980 -109,971
1994 363,017 154,214 803,953 349,348
1993 312,073 168,836 778,044 288,004
1992 360,833 170,878 767,961 -83,825
1991 396,685 161,331 762,011 -91,851
1990 407,478 124,582 750,825 -80,529
1989 467,662 31,202 743,854 -71,268
1988 527,085 51,154 736,551 -71,012
1987 598,138 28,001 718,580 94,498
1986 631,706 27,987 705,677 24,101
1985 676,687 -141,323 697,867 86,864
1984 756,523 -273,686 687,435 -26,938
1983 775,495 -269,755 679,720 58,161
1982 805,664 -288,550 662,627 -37,883
1981 811,861 -278,525 645,496 -42,485
1980 864,372 -92,314 629,444 -42,588
1979 950,298 -57,692 613,388 -4,792
1978 1,011,234 -47,996 595,024 27,307
1977 1,070,397 -49,082 574,938 49,997
1976 1,127,750 -34,976 553,617 54,875
1975 1,204,989 107 533,906 53,290
1974 1,332,960 -10,145 515,152 51,127
1973 1,391,449 -34,674 488,429 48,363
1972 1,372,006 -73,980 467,305 57,489
1971 1,331,782 -107,778 449,014 41,900
1970 1,230,496 33,731 427,988 38,635
1969 1,195,962 49,447 408,322 37,006
1968 1,191,930 43,593 389,467 34,455
1967 1,258,475 29,632 374,763 5,265
1966 682,072 68,934 360,229 5,049
1965 1,126,448 -50,667 343,456 4,742
1964 1,046,553 -100,696 328,527 9,090
1963 987,770 -100,742 314,644 4,333
1962 901,864 -57,075 300,663 3,916
1961 893,522 -58,882 286,839 8,338
1960 894,874 -150,371 275,814 1,946

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

GeoRank.org/population/japan/tanzania | 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 Tanzania 98.8% is from natural causes (a gain of 18,197,641 people) and 1.2% is from migration (a gain of 220,684 people).

As of 2024, 3,409,529 residents or 2.8% of the population were not native-born in Japan, compared to 462,371 people or 0.7% in Tanzania.

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
Tanzania
City Population
Dar es Salaam 4.72M
Zanzibar 710K
Mwanza 706K
Mbeya 542K
Morogoro 471K
Arusha 416K
Tanga 221K
Dodoma 214K
Moshi 145K

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/tanzania | 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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