| Source | UN (World Population Prospects 2019) |
| Date | 23 Aug 2021 |
The current population of Thailand is 70,232,679 as of September 26, 2023, based on interpolation of the latest United Nations data. The population of Thailand is projected at 69,950,850 or 69.951 million as of July 1, 2021. The total population in Thailand is projected at 69,799,978 or 69.800 million people for the year 2020. Thailand ranks number 20th in the world by population in the list of 235 countries/territories. Thailand is ranked 11th among 51 countries in Asia.
Thailand's population peak will be 2029 with 70.38 mn people after Thailand's population will be decreased year by year. The Thailand population is projected to reach 70.35 million in 2030 and decrease further to 65.94 million in 2050 and 46.02 million by 2100. Thailand accounts for 0.89 percent of the world population. However, its global share declined by 1.03% in 1996 and is projected to decline at 0.42% by 2100.
Thailand was at 50th position globally in 1950, and its rank is projected to decline at 21st in 2100.
| Year | Population | Growth | Share (%) | |
|---|---|---|---|---|
| Net Change | rate (%) | to World | ||
| 2020 | 69,799,978 | 174,396 | 0.25 | 0.90 |
| 2021 | 69,950,850 | 150,872 | 0.22 | 0.89 |
| 2022 | 70,078,203 | 127,353 | 0.18 | 0.88 |
| 2023 | 70,182,833 | 104,630 | 0.15 | 0.87 |
| 2024 | 70,266,057 | 83,224 | 0.12 | 0.87 |
| 2025 | 70,328,940 | 62,883 | 0.09 | 0.86 |
| 2026 | 70,371,648 | 42,708 | 0.06 | 0.85 |
| 2027 | 70,394,105 | 22,457 | 0.03 | 0.84 |
| 2028 | 70,396,848 | 2,743 | 0.00 | 0.84 |
| 2029 | 70,380,491 | -16,357 | -0.02 | 0.83 |
| 2030 | 70,345,536 | -34,955 | -0.05 | 0.82 |
| 2031 | 70,292,289 | -53,247 | -0.08 | 0.82 |
| 2032 | 70,220,900 | -71,389 | -0.10 | 0.81 |
| 2033 | 70,131,520 | -89,380 | -0.13 | 0.80 |
| 2034 | 70,024,230 | -107,290 | -0.15 | 0.79 |
| 2035 | 69,899,112 | -125,118 | -0.18 | 0.79 |
| 2036 | 69,756,436 | -142,676 | -0.20 | 0.78 |
| 2037 | 69,596,348 | -160,088 | -0.23 | 0.77 |
| 2038 | 69,418,537 | -177,811 | -0.26 | 0.76 |
| 2039 | 69,222,588 | -195,949 | -0.28 | 0.76 |
| 2040 | 69,008,285 | -214,303 | -0.31 | 0.75 |
| 2041 | 68,775,784 | -232,501 | -0.34 | 0.74 |
| 2042 | 68,525,508 | -250,276 | -0.36 | 0.74 |
| 2043 | 68,257,820 | -267,688 | -0.39 | 0.73 |
| 2044 | 67,973,166 | -284,654 | -0.42 | 0.72 |
| 2045 | 67,672,074 | -301,092 | -0.44 | 0.71 |
| 2046 | 67,355,046 | -317,028 | -0.47 | 0.71 |
| 2047 | 67,022,643 | -332,403 | -0.49 | 0.70 |
| 2048 | 66,675,558 | -347,085 | -0.52 | 0.69 |
| 2049 | 66,314,576 | -360,982 | -0.54 | 0.68 |
| 2050 | 65,940,489 | -374,087 | -0.56 | 0.68 |
| 2051 | 65,554,091 | -386,398 | -0.59 | 0.67 |
| 2052 | 65,156,255 | -397,836 | -0.61 | 0.66 |
| 2053 | 64,748,023 | -408,232 | -0.63 | 0.66 |
| 2054 | 64,330,508 | -417,515 | -0.64 | 0.65 |
| 2055 | 63,904,837 | -425,671 | -0.66 | 0.64 |
| 2056 | 63,471,890 | -432,947 | -0.68 | 0.63 |
| 2057 | 63,032,676 | -439,214 | -0.69 | 0.63 |
| 2058 | 62,588,573 | -444,103 | -0.70 | 0.62 |
| 2059 | 62,141,091 | -447,482 | -0.71 | 0.61 |
| 2060 | 61,691,562 | -449,529 | -0.72 | 0.61 |
| 2061 | 61,240,968 | -450,594 | -0.73 | 0.60 |
| 2062 | 60,790,060 | -450,908 | -0.74 | 0.59 |
| 2063 | 60,339,674 | -450,386 | -0.74 | 0.59 |
| 2064 | 59,890,565 | -449,109 | -0.74 | 0.58 |
| 2065 | 59,443,439 | -447,126 | -0.75 | 0.58 |
| 2066 | 58,998,839 | -444,600 | -0.75 | 0.57 |
| 2067 | 58,557,357 | -441,482 | -0.75 | 0.56 |
| 2068 | 58,119,628 | -437,729 | -0.75 | 0.56 |
| 2069 | 57,686,273 | -433,355 | -0.75 | 0.55 |
| 2070 | 57,257,748 | -428,525 | -0.74 | 0.55 |
| 2071 | 56,834,390 | -423,358 | -0.74 | 0.54 |
| 2072 | 56,416,237 | -418,153 | -0.74 | 0.54 |
| 2073 | 56,003,063 | -413,174 | -0.73 | 0.53 |
| 2074 | 55,594,464 | -408,599 | -0.73 | 0.53 |
| 2075 | 55,190,058 | -404,406 | -0.73 | 0.52 |
| 2076 | 54,789,804 | -400,254 | -0.73 | 0.52 |
| 2077 | 54,393,616 | -396,188 | -0.72 | 0.51 |
| 2078 | 54,000,967 | -392,649 | -0.72 | 0.51 |
| 2079 | 53,611,215 | -389,752 | -0.72 | 0.50 |
| 2080 | 53,223,842 | -387,373 | -0.72 | 0.50 |
| 2081 | 52,838,659 | -385,183 | -0.72 | 0.49 |
| 2082 | 52,455,631 | -383,028 | -0.72 | 0.49 |
| 2083 | 52,074,557 | -381,074 | -0.73 | 0.49 |
| 2084 | 51,695,312 | -379,245 | -0.73 | 0.48 |
| 2085 | 51,317,773 | -377,539 | -0.73 | 0.48 |
| 2086 | 50,941,986 | -375,787 | -0.73 | 0.47 |
| 2087 | 50,568,036 | -373,950 | -0.73 | 0.47 |
| 2088 | 50,196,068 | -371,968 | -0.74 | 0.47 |
| 2089 | 49,826,278 | -369,790 | -0.74 | 0.46 |
| 2090 | 49,458,923 | -367,355 | -0.74 | 0.46 |
| 2091 | 49,094,319 | -364,604 | -0.74 | 0.45 |
| 2092 | 48,732,827 | -361,492 | -0.74 | 0.45 |
| 2093 | 48,374,862 | -357,965 | -0.73 | 0.45 |
| 2094 | 48,020,900 | -353,962 | -0.73 | 0.44 |
| 2095 | 47,671,480 | -349,420 | -0.73 | 0.44 |
| 2096 | 47,327,205 | -344,275 | -0.72 | 0.44 |
| 2097 | 46,988,728 | -338,477 | -0.72 | 0.43 |
| 2098 | 46,656,760 | -331,968 | -0.71 | 0.43 |
| 2099 | 46,332,086 | -324,674 | -0.70 | 0.43 |
| 2100 | 46,015,543 | -316,543 | -0.68 | 0.42 |
| Year | Population | Growth | Share (%) | |
|---|---|---|---|---|
| Net Change | rate (%) | to World | ||
| 1950 | 20,710,360 | - | - | 0.82 |
| 1951 | 21,263,455 | 553,095 | 2.67 | 0.82 |
| 1952 | 21,838,310 | 574,855 | 2.70 | 0.83 |
| 1953 | 22,436,803 | 598,493 | 2.74 | 0.84 |
| 1954 | 23,060,605 | 623,802 | 2.78 | 0.85 |
| 1955 | 23,711,132 | 650,527 | 2.82 | 0.86 |
| 1956 | 24,389,553 | 678,421 | 2.86 | 0.86 |
| 1957 | 25,096,803 | 707,250 | 2.90 | 0.87 |
| 1958 | 25,833,573 | 736,770 | 2.94 | 0.88 |
| 1959 | 26,600,316 | 766,743 | 2.97 | 0.89 |
| 1960 | 27,397,207 | 796,891 | 3.00 | 0.90 |
| 1961 | 28,224,187 | 826,980 | 3.02 | 0.91 |
| 1962 | 29,080,938 | 856,751 | 3.04 | 0.92 |
| 1963 | 29,966,865 | 885,927 | 3.05 | 0.93 |
| 1964 | 30,881,138 | 914,273 | 3.05 | 0.94 |
| 1965 | 31,822,660 | 941,522 | 3.05 | 0.95 |
| 1966 | 32,789,130 | 966,470 | 3.04 | 0.96 |
| 1967 | 33,778,799 | 989,669 | 3.02 | 0.97 |
| 1968 | 34,791,409 | 1,012,610 | 3.00 | 0.98 |
| 1969 | 35,827,092 | 1,035,683 | 2.98 | 0.99 |
| 1970 | 36,884,536 | 1,057,444 | 2.95 | 1.00 |
| 1971 | 37,963,278 | 1,078,742 | 2.92 | 1.01 |
| 1972 | 39,058,603 | 1,095,325 | 2.89 | 1.01 |
| 1973 | 40,159,582 | 1,100,979 | 2.82 | 1.02 |
| 1974 | 41,252,324 | 1,092,742 | 2.72 | 1.03 |
| 1975 | 42,326,312 | 1,073,988 | 2.60 | 1.04 |
| 1976 | 43,377,271 | 1,050,959 | 2.48 | 1.04 |
| 1977 | 44,405,904 | 1,028,633 | 2.37 | 1.05 |
| 1978 | 45,413,080 | 1,007,176 | 2.27 | 1.06 |
| 1979 | 46,401,754 | 988,674 | 2.18 | 1.06 |
| 1980 | 47,374,472 | 972,718 | 2.10 | 1.06 |
| 1981 | 48,326,274 | 951,802 | 2.01 | 1.07 |
| 1982 | 49,255,900 | 929,626 | 1.92 | 1.07 |
| 1983 | 50,173,924 | 918,024 | 1.86 | 1.07 |
| 1984 | 51,094,868 | 920,944 | 1.84 | 1.07 |
| 1985 | 52,026,901 | 932,033 | 1.82 | 1.07 |
| 1986 | 52,980,094 | 953,193 | 1.83 | 1.07 |
| 1987 | 53,945,881 | 965,787 | 1.82 | 1.07 |
| 1988 | 54,891,520 | 945,639 | 1.75 | 1.07 |
| 1989 | 55,772,169 | 880,649 | 1.60 | 1.06 |
| 1990 | 56,558,186 | 786,017 | 1.41 | 1.06 |
| 1991 | 57,232,465 | 674,279 | 1.19 | 1.06 |
| 1992 | 57,811,021 | 578,556 | 1.01 | 1.05 |
| 1993 | 58,337,773 | 526,752 | 0.91 | 1.05 |
| 1994 | 58,875,269 | 537,496 | 0.92 | 1.04 |
| 1995 | 59,467,274 | 592,005 | 1.01 | 1.04 |
| 1996 | 60,130,186 | 662,912 | 1.11 | 1.03 |
| 1997 | 60,846,582 | 716,396 | 1.19 | 1.03 |
| 1998 | 61,585,103 | 738,521 | 1.21 | 1.03 |
| 1999 | 62,298,571 | 713,468 | 1.16 | 1.03 |
| 2000 | 62,952,642 | 654,071 | 1.05 | 1.02 |
| 2001 | 63,539,196 | 586,554 | 0.93 | 1.02 |
| 2002 | 64,069,087 | 529,891 | 0.83 | 1.02 |
| 2003 | 64,549,866 | 480,779 | 0.75 | 1.01 |
| 2004 | 64,995,299 | 445,433 | 0.69 | 1.01 |
| 2005 | 65,416,189 | 420,890 | 0.65 | 1.00 |
| 2006 | 65,812,536 | 396,347 | 0.61 | 0.99 |
| 2007 | 66,182,067 | 369,531 | 0.56 | 0.99 |
| 2008 | 66,530,984 | 348,917 | 0.53 | 0.98 |
| 2009 | 66,866,839 | 335,855 | 0.50 | 0.97 |
| 2010 | 67,195,028 | 328,189 | 0.49 | 0.97 |
| 2011 | 67,518,388 | 323,360 | 0.48 | 0.96 |
| 2012 | 67,835,962 | 317,574 | 0.47 | 0.95 |
| 2013 | 68,144,518 | 308,556 | 0.45 | 0.95 |
| 2014 | 68,438,746 | 294,228 | 0.43 | 0.94 |
| 2015 | 68,714,511 | 275,765 | 0.40 | 0.93 |
| 2016 | 68,971,308 | 256,797 | 0.37 | 0.92 |
| 2017 | 69,209,810 | 238,502 | 0.35 | 0.92 |
| 2018 | 69,428,453 | 218,643 | 0.32 | 0.91 |
| 2019 | 69,625,582 | 197,129 | 0.28 | 0.90 |