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

Updated on by Georank

The latest officially reported population of Japan was 123,366,734 in 2025 vs 71,619,863 people in Thailand in 2025. In 2026, based on the adjusted UN estimation, the current Japan's population is 122,704,252 people compared to 71,565,981 in Thailand.

Population statistics:

  • Japan's population is 1.71 times bigger than Thailand's.
  • Japan is ranked the 12th most populous country in the world, while Thailand is the 21st.
  • The countries together account for 2.34% of the world: 1.48% for Japan vs 0.86% for Thailand.
  • For the last 10 years, Japan has had an average growth rate of -0.28% per year vs +0.18% in Thailand.
  • Since 2006, the population of Japan has decreased from 128M people to 123M (4.03% decline), while Thailand has grown from 66.6M to 71.6M (7.51% growth).

Japan vs Thailand: population by year and forecast

Japan
Factual

Projection
Thailand
Factual

Projection
1x
Year Population
Japan Thailand
2100 76,995,942 45,708,431
2099 77,380,486 46,053,146
2098 77,759,557 46,403,189
2097 78,135,569 46,757,918
2096 78,515,892 47,118,652
2095 78,892,606 47,484,043
2094 79,267,768 47,853,561
2093 79,645,584 48,226,682
2092 80,025,578 48,605,235
2091 80,401,222 48,984,504
2090 80,778,500 49,368,049
2089 81,158,413 49,756,629
2088 81,539,639 50,142,276
2087 81,926,401 50,532,164
2086 82,322,612 50,925,294
2085 82,727,738 51,321,960
2084 83,141,354 51,724,454
2083 83,562,394 52,127,592
2082 83,998,809 52,533,368
2081 84,447,888 52,938,345
2080 84,918,455 53,347,733
2079 85,406,042 53,762,492
2078 85,916,840 54,177,529
2077 86,453,316 54,595,112
2076 87,012,155 55,015,291
2075 87,597,053 55,438,108
2074 88,209,803 55,867,914
2073 88,854,316 56,300,358
2072 89,519,055 56,735,274
2071 90,204,314 57,172,515
2070 90,919,143 57,616,731
2069 91,645,589 58,061,962
2068 92,388,299 58,512,248
2067 93,133,993 58,962,990
2066 93,889,902 59,413,893
2065 94,654,259 59,873,261
2064 95,412,429 60,331,851
2063 96,169,244 60,792,306
2062 96,924,236 61,257,068
2061 97,675,525 61,720,030
2060 98,422,553 62,187,380
2059 99,166,038 62,651,158
2058 99,890,950 63,113,332
2057 100,607,740 63,572,746
2056 101,318,164 64,027,520
2055 102,012,184 64,473,146
2054 102,706,063 64,912,210
2053 103,381,833 65,338,122
2052 104,059,800 65,758,061
2051 104,729,745 66,162,612
2050 105,400,477 66,552,915
2049 106,076,354 66,931,487
2048 106,754,699 67,291,479
2047 107,442,881 67,636,461
2046 108,139,155 67,967,131
2045 108,844,934 68,281,902
2044 109,553,441 68,579,656
2043 110,269,851 68,864,788
2042 110,992,599 69,133,982
2041 111,729,216 69,390,832
2040 112,463,507 69,626,857
2039 113,200,859 69,848,522
2038 113,940,856 70,056,903
2037 114,687,611 70,250,371
2036 115,436,359 70,429,677
2035 116,187,949 70,599,021
2034 116,936,734 70,751,094
2033 117,678,572 70,891,510
2032 118,419,247 71,019,665
2031 119,153,646 71,134,882
2030 119,882,512 71,241,584
2029 120,600,781 71,337,147
2028 121,314,239 71,423,119
2027 122,015,984 71,499,411
2026 122,704,252 71,565,981
2025 123,366,734 71,619,863
2024 123,975,371 71,668,011
2023 124,516,650 71,702,435
2022 125,124,989 71,735,329
2021 125,681,593 71,727,332
2020 126,261,000 71,641,484
2019 126,633,000 71,522,271
2018 126,811,000 71,376,079
2017 126,972,000 71,160,187
2016 127,076,000 70,859,841
2015 127,141,000 70,540,795
2014 127,276,000 70,216,367
2013 127,445,000 69,845,114
2012 127,629,000 69,436,098
2011 127,833,000 69,007,208
2010 128,070,000 68,579,447
2009 128,047,000 68,121,080
2008 128,063,000 67,619,830
2007 128,001,000 67,102,394
2006 127,854,000 66,567,687
2005 127,773,000 66,017,420
2004 127,761,000 65,452,047
2003 127,718,000 64,868,166
2002 127,445,000 64,266,437
2001 127,149,000 63,651,141
2000 126,843,000 63,007,815
1999 126,631,000 62,299,043
1998 126,400,000 61,522,630
1997 126,057,000 60,724,584
1996 125,757,000 59,920,064
1995 125,472,000 59,098,232
1994 125,178,000 58,260,854
1993 124,829,000 57,408,198
1992 124,425,000 56,528,834
1991 123,964,000 55,637,434
1990 123,478,000 54,738,329
1989 123,069,000 53,848,956
1988 122,578,000 52,969,595
1987 122,069,000 52,074,105
1986 121,482,000 51,177,834
1985 120,837,000 50,270,753
1984 120,083,000 49,351,708
1983 119,307,000 48,423,309
1982 118,480,000 47,494,577
1981 117,661,000 46,575,855
1980 116,807,000 45,650,022
1979 115,890,000 44,718,434
1978 114,913,000 43,788,976
1977 113,872,000 42,843,974
1976 112,775,000 41,896,504
1975 111,573,000 40,940,005
1974 110,162,000 39,952,891
1973 108,707,000 38,947,787
1972 107,188,000 37,933,929
1971 105,697,000 36,937,387
1970 103,403,000 35,954,408
1969 102,219,000 34,973,782
1968 101,011,000 34,002,560
1967 99,879,000 33,037,801
1966 98,851,000 32,086,071
1965 97,952,000 31,149,337
1964 96,903,000 30,232,141
1963 95,900,000 29,342,322
1962 94,933,000 28,481,040
1961 94,055,000 27,650,334
1960 93,216,000 26,851,747

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/thailand | CC BY

From 2006 to 2016, the population of Japan decreased by 778,000 people (a 0.61% decline), while Thailand gained 4,292,154 people (a 6.45% growth).

For the next 10 years, from 2016 to 2026, Japan lost 4,371,748 people (a 3.44% decline), while Thailand's population increased by 706,140 people (a 1% growth).

Japan was ranked 10th most populous country in 2006 and is 12th in 2026. Thailand was ranked 19th in 2006 and ranked 21st 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 Thailand will decrease by 7% to 66,552,915 people and rank change from 21st to 31st.

Both countries are in a period of decline and in 50 years are projected to lose 29.1% of the population in Japan and 23.1% in Thailand.

Population growth rate by year

Japan
Factual

Projection
Thailand
Factual

Projection
1x
Year Growth rate
Japan Thailand
2100 -0.5% -0.75%
2099 -0.49% -0.75%
2098 -0.48% -0.76%
2097 -0.48% -0.77%
2096 -0.48% -0.77%
2095 -0.47% -0.77%
2094 -0.47% -0.77%
2093 -0.47% -0.78%
2092 -0.47% -0.77%
2091 -0.47% -0.78%
2090 -0.47% -0.78%
2089 -0.47% -0.77%
2088 -0.47% -0.77%
2087 -0.48% -0.77%
2086 -0.49% -0.77%
2085 -0.5% -0.78%
2084 -0.5% -0.77%
2083 -0.52% -0.77%
2082 -0.53% -0.76%
2081 -0.55% -0.77%
2080 -0.57% -0.77%
2079 -0.59% -0.77%
2078 -0.62% -0.76%
2077 -0.64% -0.76%
2076 -0.67% -0.76%
2075 -0.69% -0.77%
2074 -0.73% -0.77%
2073 -0.74% -0.77%
2072 -0.76% -0.76%
2071 -0.79% -0.77%
2070 -0.79% -0.77%
2069 -0.8% -0.77%
2068 -0.8% -0.76%
2067 -0.81% -0.76%
2066 -0.81% -0.77%
2065 -0.79% -0.76%
2064 -0.79% -0.76%
2063 -0.78% -0.76%
2062 -0.77% -0.75%
2061 -0.76% -0.75%
2060 -0.75% -0.74%
2059 -0.73% -0.73%
2058 -0.71% -0.72%
2057 -0.7% -0.71%
2056 -0.68% -0.69%
2055 -0.68% -0.68%
2054 -0.65% -0.65%
2053 -0.65% -0.64%
2052 -0.64% -0.61%
2051 -0.64% -0.59%
2050 -0.64% -0.57%
2049 -0.64% -0.53%
2048 -0.64% -0.51%
2047 -0.64% -0.49%
2046 -0.65% -0.46%
2045 -0.65% -0.43%
2044 -0.65% -0.41%
2043 -0.65% -0.39%
2042 -0.66% -0.37%
2041 -0.65% -0.34%
2040 -0.65% -0.32%
2039 -0.65% -0.3%
2038 -0.65% -0.28%
2037 -0.65% -0.25%
2036 -0.65% -0.24%
2035 -0.64% -0.21%
2034 -0.63% -0.2%
2033 -0.63% -0.18%
2032 -0.62% -0.16%
2031 -0.61% -0.15%
2030 -0.6% -0.13%
2029 -0.59% -0.12%
2028 -0.58% -0.11%
2027 -0.56% -0.09%
2026 -0.54% -0.08%
2025 -0.49% -0.07%
2024 -0.43% -0.05%
2023 -0.49% -0.05%
2022 -0.44% 0.01%
2021 -0.46% 0.12%
2020 -0.29% 0.17%
2019 -0.14% 0.2%
2018 -0.13% 0.3%
2017 -0.08% 0.42%
2016 -0.05% 0.45%
2015 -0.11% 0.46%
2014 -0.13% 0.53%
2013 -0.14% 0.59%
2012 -0.16% 0.62%
2011 -0.19% 0.62%
2010 0.02% 0.67%
2009 -0.01% 0.74%
2008 0.05% 0.77%
2007 0.11% 0.8%
2006 0.06% 0.83%
2005 0.009% 0.86%
2004 0.03% 0.9%
2003 0.21% 0.94%
2002 0.23% 0.97%
2001 0.24% 1.02%
2000 0.17% 1.14%
1999 0.18% 1.26%
1998 0.27% 1.31%
1997 0.24% 1.34%
1996 0.23% 1.39%
1995 0.23% 1.44%
1994 0.28% 1.49%
1993 0.32% 1.56%
1992 0.37% 1.6%
1991 0.39% 1.64%
1990 0.33% 1.65%
1989 0.4% 1.66%
1988 0.42% 1.72%
1987 0.48% 1.75%
1986 0.53% 1.8%
1985 0.63% 1.86%
1984 0.65% 1.92%
1983 0.7% 1.96%
1982 0.7% 1.97%
1981 0.73% 2.03%
1980 0.79% 2.08%
1979 0.85% 2.12%
1978 0.91% 2.21%
1977 0.97% 2.26%
1976 1.08% 2.34%
1975 1.28% 2.47%
1974 1.34% 2.58%
1973 1.42% 2.67%
1972 1.41% 2.7%
1971 2.22% 2.73%
1970 1.16% 2.8%
1969 1.2% 2.86%
1968 1.13% 2.92%
1967 1.04% 2.97%
1966 0.92% 3.01%
1965 1.08% 3.03%
1964 1.05% 3.03%
1963 1.02% 3.02%
1962 0.93% 3%
1961 0.9% 2.97%

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/thailand | CC BY

In 2025, the population of Japan declined by 0.49%, while Thailand's population declined by 0.07%.

Live population counters

Japan Thailand
Current population
122704252
71565981
Population rank 12/197 21/197
Percent of world population 1.48% 0.86%
One net population change
52 seconds
10.9 minutes
One birth every
44.6 seconds
54.2 seconds
One death every
19.1 seconds
48.7 seconds
Daily growth/decline -1,667 -132
Annual growth/decline -608,637 -48,148
Annual growth/decline rate -0.49% -0.07%
Population growth rate rank 183/197 164/197
One migration net change every
3.75 minutes
19.2 minutes
Annual migration change +140,579 +27,509
Net migration rank 10/196 30/196
Foreign-born residents 3,409,529 3,179,399
Foreign-born residents rank 19/195 21/195
Foreign-born share of population 2.8% 4.4%
Foreign-born share rank 120/195 100/195

Natural population change vs migration

Japan
Natural

Migration
Thailand
Natural

Migration
1x
Year Population change
Japan Thailand
Natural Migration Natural Migration
2025 - 140,579 - 27,509
2024 -942,213 153,357 -65,720 23,321
2023 -871,617 175,003 -46,105 19,648
2022 -825,825 175,003 -61,046 21,683
2021 -640,976 -34,996 57,382 -2,093
2020 -542,923 42,001 84,107 32,277
2019 -531,858 318,190 116,867 5,221
2018 -456,520 320,601 159,383 10,984
2017 -406,310 322,564 194,695 66,805
2016 -343,106 314,732 226,255 112,978
2015 -292,424 168,896 266,362 32,500
2014 -267,279 58,109 294,628 55,358
2013 -242,146 66,449 325,059 67,452
2012 -229,733 67,904 351,485 74,033
2011 -204,533 97,720 365,670 66,607
2010 -128,070 131,860 370,466 52,791
2009 -76,828 125,450 382,636 110,883
2008 -51,225 142,605 401,730 107,333
2007 -25,600 138,024 425,362 100,486
2006 12,785 130,065 441,211 102,362
2005 -25,554 113,017 456,378 100,542
2004 76,656 69,014 466,542 107,199
2003 114,946 74,875 488,003 105,917
2002 178,423 60,864 504,299 105,215
2001 203,438 59,563 524,230 96,817
2000 228,317 23,468 543,884 121,640
1999 202,610 56,901 578,073 173,924
1998 265,440 45,912 617,318 183,471
1997 277,325 43,366 644,834 150,411
1996 314,392 25,030 661,397 152,397
1995 276,039 87,714 682,703 147,226
1994 363,017 154,214 712,589 132,271
1993 312,073 168,836 737,696 122,746
1992 360,833 170,878 754,999 143,318
1991 396,685 161,331 760,508 124,034
1990 407,478 124,582 760,808 152,916
1989 467,662 31,202 774,563 90,497
1988 527,085 51,154 765,252 128,469
1987 598,138 28,001 774,498 122,791
1986 631,706 27,987 783,430 111,820
1985 676,687 -141,323 776,935 141,963
1984 756,523 -273,686 779,856 139,345
1983 775,495 -269,755 794,239 143,393
1982 805,664 -288,550 817,951 101,885
1981 811,861 -278,525 839,297 78,337
1980 864,372 -92,314 845,575 88,478
1979 950,298 -57,692 843,434 85,693
1978 1,011,234 -47,996 847,799 82,011
1977 1,070,397 -49,082 871,232 88,937
1976 1,127,750 -34,976 894,072 40,656
1975 1,204,989 107 911,980 66,306
1974 1,332,960 -10,145 923,151 72,801
1973 1,391,449 -34,674 933,540 80,704
1972 1,372,006 -73,980 940,420 73,082
1971 1,331,782 -107,778 936,215 43,400
1970 1,230,496 33,731 937,116 49,221
1969 1,195,962 49,447 948,314 26,551
1968 1,191,930 43,593 953,806 13,718
1967 1,258,475 29,632 944,980 17,005
1966 682,072 68,934 929,469 12,016
1965 1,126,448 -50,667 909,000 22,995
1964 1,046,553 -100,696 885,137 17,249
1963 987,770 -100,742 860,728 16,494
1962 901,864 -57,075 828,741 16,605
1961 893,522 -58,882 801,140 14,968
1960 894,874 -150,371 774,190 6,886

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

GeoRank.org/population/japan/thailand | 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 Thailand 74.2% is from natural causes (a gain of 932,180 people) and 25.8% is from migration (a gain of 323,324 people).

As of 2024, 3,409,529 residents or 2.8% of the population were not native-born in Japan, compared to 3,179,399 people or 4.4% in Thailand.

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
Thailand
City Population
Bangkok 5.68M
Chiang Mai 1.2M
Nonthaburi 256K
Pak Kret 190K
Hat Yai 159K
Nakhon Ratchasima 134K
Chaophraya Surasak 133K
Surat Thani 131K
Udon Thani 130K
Klaeng 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/thailand | 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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