The latest officially reported population of Bulgaria was 6,433,302 in 2025 vs 103,742 people in Tonga in 2025. In 2026, based on the adjusted UN estimation, the current Bulgaria's population is 6,390,149 people compared to 103,283 in Tonga.
Population statistics:
- Bulgaria's population is 61.9 times bigger than Tonga's.
- Bulgaria is ranked the 112th most populous country in the world, while Tonga is the 183rd.
- The countries together account for 0.08% of the world: 0.08% for Bulgaria vs 0.001% for Tonga.
- For the last 10 years, Bulgaria has had an average growth rate of -0.86% per year vs -0.25% in Tonga.
- Since 2006, the population of Bulgaria has decreased from 7.6M people to 6.39M (15.9% decline), while Tonga has declined from 106K to 103K (2.8% decline).
Bulgaria vs Tonga: population by year and forecast
| Year | Population | |
|---|---|---|
Bulgaria
|
Tonga
|
|
| 2100 | 3,384,288 | 117,617 |
| 2099 | 3,408,821 | 117,585 |
| 2098 | 3,433,149 | 117,530 |
| 2097 | 3,457,549 | 117,492 |
| 2096 | 3,482,057 | 117,461 |
| 2095 | 3,506,060 | 117,383 |
| 2094 | 3,530,278 | 117,290 |
| 2093 | 3,554,432 | 117,207 |
| 2092 | 3,578,667 | 117,097 |
| 2091 | 3,602,907 | 116,983 |
| 2090 | 3,627,300 | 116,838 |
| 2089 | 3,652,188 | 116,682 |
| 2088 | 3,677,416 | 116,481 |
| 2087 | 3,703,460 | 116,277 |
| 2086 | 3,730,284 | 116,088 |
| 2085 | 3,757,953 | 115,872 |
| 2084 | 3,786,496 | 115,628 |
| 2083 | 3,815,548 | 115,336 |
| 2082 | 3,845,662 | 115,041 |
| 2081 | 3,876,344 | 114,752 |
| 2080 | 3,908,874 | 114,424 |
| 2079 | 3,942,344 | 114,074 |
| 2078 | 3,976,345 | 113,710 |
| 2077 | 4,011,440 | 113,349 |
| 2076 | 4,047,182 | 112,945 |
| 2075 | 4,083,977 | 112,565 |
| 2074 | 4,122,447 | 112,179 |
| 2073 | 4,161,511 | 111,790 |
| 2072 | 4,201,158 | 111,377 |
| 2071 | 4,241,639 | 110,963 |
| 2070 | 4,283,145 | 110,576 |
| 2069 | 4,325,083 | 110,209 |
| 2068 | 4,367,606 | 109,825 |
| 2067 | 4,411,116 | 109,446 |
| 2066 | 4,455,358 | 109,062 |
| 2065 | 4,500,141 | 108,736 |
| 2064 | 4,545,243 | 108,377 |
| 2063 | 4,590,439 | 108,033 |
| 2062 | 4,635,634 | 107,710 |
| 2061 | 4,681,315 | 107,396 |
| 2060 | 4,727,089 | 107,117 |
| 2059 | 4,772,667 | 106,842 |
| 2058 | 4,817,532 | 106,589 |
| 2057 | 4,862,597 | 106,345 |
| 2056 | 4,907,646 | 106,130 |
| 2055 | 4,953,105 | 105,915 |
| 2054 | 4,998,650 | 105,698 |
| 2053 | 5,044,397 | 105,486 |
| 2052 | 5,089,817 | 105,286 |
| 2051 | 5,135,505 | 105,079 |
| 2050 | 5,181,635 | 104,844 |
| 2049 | 5,228,058 | 104,636 |
| 2048 | 5,274,692 | 104,387 |
| 2047 | 5,322,212 | 104,154 |
| 2046 | 5,369,645 | 103,852 |
| 2045 | 5,417,381 | 103,548 |
| 2044 | 5,465,818 | 103,215 |
| 2043 | 5,514,902 | 102,934 |
| 2042 | 5,564,573 | 102,692 |
| 2041 | 5,615,489 | 102,447 |
| 2040 | 5,667,076 | 102,228 |
| 2039 | 5,719,506 | 102,061 |
| 2038 | 5,771,452 | 101,835 |
| 2037 | 5,824,628 | 101,707 |
| 2036 | 5,877,980 | 101,627 |
| 2035 | 5,930,517 | 101,580 |
| 2034 | 5,983,205 | 101,571 |
| 2033 | 6,036,049 | 101,591 |
| 2032 | 6,088,107 | 101,633 |
| 2031 | 6,140,619 | 101,764 |
| 2030 | 6,193,318 | 101,928 |
| 2029 | 6,244,785 | 102,181 |
| 2028 | 6,294,981 | 102,494 |
| 2027 | 6,343,732 | 102,841 |
| 2026 | 6,390,149 | 103,283 |
| 2025 | 6,433,302 | 103,742 |
| 2024 | 6,441,421 | 104,175 |
| 2023 | 6,446,596 | 104,597 |
| 2022 | 6,465,097 | 105,042 |
| 2021 | 6,507,301 | 105,490 |
| 2020 | 6,550,696 | 105,704 |
| 2019 | 6,616,726 | 105,669 |
| 2018 | 6,710,798 | 105,567 |
| 2017 | 6,803,468 | 105,356 |
| 2016 | 6,894,139 | 105,524 |
| 2015 | 6,984,225 | 106,095 |
| 2014 | 7,073,572 | 106,609 |
| 2013 | 7,160,005 | 107,078 |
| 2012 | 7,305,888 | 107,460 |
| 2011 | 7,348,328 | 107,570 |
| 2010 | 7,395,599 | 107,400 |
| 2009 | 7,444,443 | 107,203 |
| 2008 | 7,492,561 | 107,020 |
| 2007 | 7,545,338 | 106,726 |
| 2006 | 7,601,022 | 106,253 |
| 2005 | 7,658,972 | 105,671 |
| 2004 | 7,716,860 | 105,071 |
| 2003 | 7,775,327 | 104,464 |
| 2002 | 7,837,161 | 103,874 |
| 2001 | 8,009,142 | 103,288 |
| 2000 | 8,170,172 | 102,677 |
| 1999 | 8,210,624 | 102,046 |
| 1998 | 8,256,786 | 101,388 |
| 1997 | 8,312,068 | 100,674 |
| 1996 | 8,362,826 | 100,275 |
| 1995 | 8,406,067 | 100,225 |
| 1994 | 8,443,591 | 100,166 |
| 1993 | 8,472,313 | 100,103 |
| 1992 | 8,540,164 | 100,022 |
| 1991 | 8,632,367 | 99,895 |
| 1990 | 8,718,289 | 99,700 |
| 1989 | 8,876,972 | 99,403 |
| 1988 | 8,981,446 | 98,969 |
| 1987 | 8,971,359 | 98,376 |
| 1986 | 8,958,171 | 98,010 |
| 1985 | 8,960,547 | 97,984 |
| 1984 | 8,960,679 | 97,990 |
| 1983 | 8,939,738 | 97,998 |
| 1982 | 8,917,457 | 97,980 |
| 1981 | 8,891,117 | 97,909 |
| 1980 | 8,861,535 | 97,769 |
| 1979 | 8,825,940 | 97,544 |
| 1978 | 8,814,032 | 97,204 |
| 1977 | 8,804,183 | 96,725 |
| 1976 | 8,758,599 | 95,325 |
| 1975 | 8,720,742 | 93,017 |
| 1974 | 8,678,745 | 90,683 |
| 1973 | 8,620,967 | 88,805 |
| 1972 | 8,576,200 | 87,356 |
| 1971 | 8,536,395 | 85,896 |
| 1970 | 8,489,574 | 84,401 |
| 1969 | 8,434,172 | 82,885 |
| 1968 | 8,369,603 | 81,353 |
| 1967 | 8,310,226 | 79,814 |
| 1966 | 8,258,057 | 78,002 |
| 1965 | 8,204,168 | 75,924 |
| 1964 | 8,144,340 | 73,879 |
| 1963 | 8,078,145 | 71,885 |
| 1962 | 8,012,946 | 69,940 |
| 1961 | 7,943,118 | 68,037 |
| 1960 | 7,867,374 | 66,170 |
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/bulgaria/tonga | CC BY 
From 2006 to 2016, the population of Bulgaria decreased by 706,883 people (a 9.3% decline), while Tonga lost 729 people (a 0.69% decline).
For the next 10 years, from 2016 to 2026, Bulgaria lost 503,990 people (a 7.31% decline), while Tonga's population decreased by 2,241 people (a 2.12% decline).
Bulgaria was ranked 95th most populous country in 2006 and is 112th in 2026. Tonga was ranked 182nd in 2006 and ranked 183rd now.
The UN's World Population Prospects forecasts that in 24 years (in 2050) Bulgaria's population will shrink by 18.9% to 5,181,635 people with a rank change from 112th to 128th. The population of Tonga will increase by 1.51% to 104,844 people and will still be ranked 183rd.
Tonga is projected to reach its peak in 2100 at 118K people, while Bulgaria's population already peaked in 1988 at 8.98M people and is projected to decrease to 3.38M people by 2100.
Population growth rate by year
| Year | Growth rate | |
|---|---|---|
|
Bulgaria
|
Tonga
|
|
| 2100 | -0.72% | 0.03% |
| 2099 | -0.71% | 0.05% |
| 2098 | -0.71% | 0.03% |
| 2097 | -0.7% | 0.03% |
| 2096 | -0.68% | 0.07% |
| 2095 | -0.69% | 0.08% |
| 2094 | -0.68% | 0.07% |
| 2093 | -0.68% | 0.09% |
| 2092 | -0.67% | 0.1% |
| 2091 | -0.67% | 0.12% |
| 2090 | -0.68% | 0.13% |
| 2089 | -0.69% | 0.17% |
| 2088 | -0.7% | 0.18% |
| 2087 | -0.72% | 0.16% |
| 2086 | -0.74% | 0.19% |
| 2085 | -0.75% | 0.21% |
| 2084 | -0.76% | 0.25% |
| 2083 | -0.78% | 0.26% |
| 2082 | -0.79% | 0.25% |
| 2081 | -0.83% | 0.29% |
| 2080 | -0.85% | 0.31% |
| 2079 | -0.86% | 0.32% |
| 2078 | -0.87% | 0.32% |
| 2077 | -0.88% | 0.36% |
| 2076 | -0.9% | 0.34% |
| 2075 | -0.93% | 0.34% |
| 2074 | -0.94% | 0.35% |
| 2073 | -0.94% | 0.37% |
| 2072 | -0.95% | 0.37% |
| 2071 | -0.97% | 0.35% |
| 2070 | -0.97% | 0.33% |
| 2069 | -0.97% | 0.35% |
| 2068 | -0.99% | 0.35% |
| 2067 | -0.99% | 0.35% |
| 2066 | -1% | 0.3% |
| 2065 | -0.99% | 0.33% |
| 2064 | -0.98% | 0.32% |
| 2063 | -0.97% | 0.3% |
| 2062 | -0.98% | 0.29% |
| 2061 | -0.97% | 0.26% |
| 2060 | -0.95% | 0.26% |
| 2059 | -0.93% | 0.24% |
| 2058 | -0.93% | 0.23% |
| 2057 | -0.92% | 0.2% |
| 2056 | -0.92% | 0.2% |
| 2055 | -0.91% | 0.2% |
| 2054 | -0.91% | 0.2% |
| 2053 | -0.89% | 0.19% |
| 2052 | -0.89% | 0.2% |
| 2051 | -0.89% | 0.22% |
| 2050 | -0.89% | 0.2% |
| 2049 | -0.88% | 0.24% |
| 2048 | -0.89% | 0.22% |
| 2047 | -0.88% | 0.29% |
| 2046 | -0.88% | 0.29% |
| 2045 | -0.89% | 0.32% |
| 2044 | -0.89% | 0.27% |
| 2043 | -0.89% | 0.24% |
| 2042 | -0.91% | 0.24% |
| 2041 | -0.91% | 0.21% |
| 2040 | -0.92% | 0.16% |
| 2039 | -0.9% | 0.22% |
| 2038 | -0.91% | 0.13% |
| 2037 | -0.91% | 0.08% |
| 2036 | -0.89% | 0.05% |
| 2035 | -0.88% | 0.009% |
| 2034 | -0.88% | -0.02% |
| 2033 | -0.86% | -0.04% |
| 2032 | -0.86% | -0.13% |
| 2031 | -0.85% | -0.16% |
| 2030 | -0.82% | -0.25% |
| 2029 | -0.8% | -0.31% |
| 2028 | -0.77% | -0.34% |
| 2027 | -0.73% | -0.43% |
| 2026 | -0.67% | -0.44% |
| 2025 | -0.13% | -0.42% |
| 2024 | -0.08% | -0.4% |
| 2023 | -0.29% | -0.42% |
| 2022 | -0.65% | -0.42% |
| 2021 | -0.66% | -0.2% |
| 2020 | -1% | 0.03% |
| 2019 | -1.4% | 0.1% |
| 2018 | -1.36% | 0.2% |
| 2017 | -1.32% | -0.16% |
| 2016 | -1.29% | -0.54% |
| 2015 | -1.26% | -0.48% |
| 2014 | -1.21% | -0.44% |
| 2013 | -2% | -0.36% |
| 2012 | -0.58% | -0.1% |
| 2011 | -0.64% | 0.16% |
| 2010 | -0.66% | 0.18% |
| 2009 | -0.64% | 0.17% |
| 2008 | -0.7% | 0.28% |
| 2007 | -0.73% | 0.45% |
| 2006 | -0.76% | 0.55% |
| 2005 | -0.75% | 0.57% |
| 2004 | -0.75% | 0.58% |
| 2003 | -0.79% | 0.57% |
| 2002 | -2.15% | 0.57% |
| 2001 | -1.97% | 0.6% |
| 2000 | -0.49% | 0.62% |
| 1999 | -0.56% | 0.65% |
| 1998 | -0.67% | 0.71% |
| 1997 | -0.61% | 0.4% |
| 1996 | -0.51% | 0.05% |
| 1995 | -0.44% | 0.06% |
| 1994 | -0.34% | 0.06% |
| 1993 | -0.79% | 0.08% |
| 1992 | -1.07% | 0.13% |
| 1991 | -0.99% | 0.2% |
| 1990 | -1.79% | 0.3% |
| 1989 | -1.16% | 0.44% |
| 1988 | 0.11% | 0.6% |
| 1987 | 0.15% | 0.37% |
| 1986 | -0.03% | 0.03% |
| 1985 | -0.001% | -0.006% |
| 1984 | 0.23% | -0.008% |
| 1983 | 0.25% | 0.02% |
| 1982 | 0.3% | 0.07% |
| 1981 | 0.33% | 0.14% |
| 1980 | 0.4% | 0.23% |
| 1979 | 0.14% | 0.35% |
| 1978 | 0.11% | 0.5% |
| 1977 | 0.52% | 1.47% |
| 1976 | 0.43% | 2.48% |
| 1975 | 0.48% | 2.57% |
| 1974 | 0.67% | 2.11% |
| 1973 | 0.52% | 1.66% |
| 1972 | 0.47% | 1.7% |
| 1971 | 0.55% | 1.77% |
| 1970 | 0.66% | 1.83% |
| 1969 | 0.77% | 1.88% |
| 1968 | 0.71% | 1.93% |
| 1967 | 0.63% | 2.32% |
| 1966 | 0.66% | 2.74% |
| 1965 | 0.73% | 2.77% |
| 1964 | 0.82% | 2.77% |
| 1963 | 0.81% | 2.78% |
| 1962 | 0.88% | 2.8% |
| 1961 | 0.96% | 2.82% |
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/bulgaria/tonga | CC BY
In 2025, the population of Bulgaria declined by 0.13%, while Tonga's population declined by 0.42%.
Live population counters
|
Bulgaria
|
Tonga
|
|
|---|---|---|
| Current population |
6390149
|
103283
|
| Population rank | 112/197 | 183/197 |
| Percent of world population | 0.08% | 0.001% |
| One net population change |
1.08 hours
|
20.3 hours
|
| One birth every |
9.83 minutes
|
3.65 hours
|
| One death every |
5.23 minutes
|
13.1 hours
|
| Daily growth/decline | -22 | -1 |
| Annual growth/decline | -8,119 | -433 |
| Annual growth/decline rate | -0.13% | -0.42% |
| Population growth rate rank | 168/197 | 181/197 |
| One migration net change every |
2.97 hours
|
4.09 hours
|
| Annual migration change | -2,961 | -2,150 |
| Net migration rank | 106/196 | 99/196 |
| Foreign-born residents | 299,100 | 3,581 |
| Foreign-born residents rank | 98/195 | 187/195 |
| Foreign-born share of population | 4.4% | 3.4% |
| Foreign-born share rank | 99/195 | 113/195 |
Natural population change vs migration
| Year | Population change | |||
|---|---|---|---|---|
|
Bulgaria
|
Tonga
|
|||
| Natural | Migration | Natural | Migration | |
| 2025 | - | -2,961 | - | -2,150 |
| 2024 | -47,023 | 524 | 1,729 | -2,149 |
| 2023 | -43,837 | 5,173 | 1,744 | -2,173 |
| 2022 | -62,065 | 26,498 | 1,772 | -2,218 |
| 2021 | -90,452 | 11,756 | 1,773 | -2,220 |
| 2020 | -65,507 | 30,167 | 1,816 | -1,807 |
| 2019 | -46,317 | -2,156 | 1,841 | -1,778 |
| 2018 | -46,304 | -3,873 | 1,873 | -1,723 |
| 2017 | -45,583 | -6,109 | 1,912 | -1,642 |
| 2016 | -42,744 | -9,482 | 1,989 | -2,591 |
| 2015 | -44,699 | -4,227 | 2,064 | -2,610 |
| 2014 | -41,027 | -2,180 | 2,135 | -2,622 |
| 2013 | -37,948 | -1,324 | 2,199 | -2,637 |
| 2012 | -40,183 | -26,334 | 2,255 | -2,578 |
| 2011 | -37,477 | -23,360 | 2,298 | -2,198 |
| 2010 | -34,759 | -21,668 | 2,332 | -2,097 |
| 2009 | -26,800 | -19,060 | 2,358 | -2,204 |
| 2008 | -32,967 | -17,595 | 2,397 | -2,177 |
| 2007 | -37,727 | -16,366 | 2,423 | -2,057 |
| 2006 | -39,526 | -15,184 | 2,459 | -1,875 |
| 2005 | -42,124 | -14,435 | 2,495 | -1,906 |
| 2004 | -40,128 | -13,604 | 2,478 | -1,876 |
| 2003 | -44,319 | -13,183 | 2,448 | -1,844 |
| 2002 | -46,240 | -12,735 | 2,396 | -1,815 |
| 2001 | -44,050 | -30,726 | 2,358 | -1,766 |
| 2000 | -41,668 | -26,211 | 2,346 | -1,721 |
| 1999 | -39,411 | -23,846 | 2,352 | -1,710 |
| 1998 | -52,844 | -23,262 | 2,344 | -1,665 |
| 1997 | -58,185 | -22,963 | 2,332 | -1,589 |
| 1996 | -45,159 | -21,520 | 2,393 | -2,338 |
| 1995 | -42,030 | -22,020 | 2,476 | -2,422 |
| 1994 | -32,086 | -20,984 | 2,547 | -2,484 |
| 1993 | -24,569 | -19,973 | 2,594 | -2,532 |
| 1992 | -18,789 | -120,552 | 2,622 | -2,524 |
| 1991 | -14,675 | -119,356 | 2,637 | -2,484 |
| 1990 | -3,487 | -116,817 | 2,641 | -2,409 |
| 1989 | 5,326 | -114,705 | 2,644 | -2,280 |
| 1988 | 9,879 | 215 | 2,649 | -2,138 |
| 1987 | 8,971 | 357 | 2,646 | -1,970 |
| 1986 | 16,125 | 1,104 | 2,704 | -2,650 |
| 1985 | 11,649 | -19,230 | 2,762 | -2,775 |
| 1984 | 20,610 | -1,032 | 2,814 | -2,823 |
| 1983 | 21,455 | -1,872 | 2,840 | -2,840 |
| 1982 | 24,077 | -1,860 | 2,853 | -2,814 |
| 1981 | 29,341 | -1,830 | 2,882 | -2,778 |
| 1980 | 30,129 | -2,045 | 2,885 | -2,708 |
| 1979 | 40,599 | -872 | 2,884 | -2,604 |
| 1978 | 44,070 | -62,769 | 2,862 | -2,457 |
| 1977 | 47,543 | -11,955 | 2,822 | -2,273 |
| 1976 | 56,055 | -2,522 | 2,769 | -523 |
| 1975 | 54,941 | -38,071 | 2,709 | -346 |
| 1974 | 64,223 | -1,402 | 2,650 | -344 |
| 1973 | 57,760 | -5,409 | 2,617 | -1,168 |
| 1972 | 47,169 | -11,296 | 2,605 | -1,153 |
| 1971 | 52,925 | -7,654 | 2,611 | -1,138 |
| 1970 | 61,125 | -11,315 | 2,628 | -1,122 |
| 1969 | 63,256 | -3,204 | 2,632 | -1,101 |
| 1968 | 69,468 | -132 | 2,614 | -1,078 |
| 1967 | 49,861 | -420 | 2,603 | -1,060 |
| 1966 | 54,504 | -144 | 2,550 | -465 |
| 1965 | 58,249 | -1,406 | 2,498 | -426 |
| 1964 | 66,783 | 505 | 2,445 | -428 |
| 1963 | 66,241 | 500 | 2,394 | -426 |
| 1962 | 64,104 | 499 | 2,343 | -420 |
| 1961 | 75,460 | 378 | 2,284 | -401 |
| 1960 | 76,314 | -1,112 | 2,230 | -384 |
Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08).
GeoRank.org/population/bulgaria/tonga | CC BY
Over the last 10 years, 91.7% of the population change in Bulgaria is from natural causes (a loss of 534,531 people) and 8.28% is from migration (a gain of 48,271 people). In Tonga 47% is from natural causes (a gain of 18,513 people) and 53% is from migration (a loss of 20,911 people).
As of 2024, 299,100 residents or 4.4% of the population were not native-born in Bulgaria, compared to 3,581 people or 3.4% in Tonga.
Biggest cities by population
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Population differences between Bulgaria and Tonga
|
Bulgaria
|
Tonga
|
|
|---|---|---|
| Life expectancy | 76.1 years | 73.4 years |
| Average age | 44.2 years | 28.1 years |
| Median age | 45.7 years | 22 years |
| Male:Female ratio | 48.4:51.6 | 47.2:52.8 |
| Fertility rate | 1.72 births per woman | 3.1 births per woman |
| Population density | 152.5 ppl/mi² | 372 ppl/mi² |
Population map with other countries
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/bulgaria/tonga | CC BY
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Data sources:
- World Bank | Health (1960–2025, retrieved 2026-07-08)
- United Nations | World Population Prospects (1960–2100, retrieved 2026-07-08)
- U.S. Census Bureau (1960–2025, retrieved 2026-07-08)
- Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-07-08)
- Wikidata (2026, retrieved 2026-07-08)
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