The latest officially reported population of Bulgaria was 6,441,421 in 2024 vs 5,422,069 people in Slovakia in 2024. In 2026, based on the adjusted UN estimation, the current Bulgaria's population is 6,359,449 people compared to 5,359,438 in Slovakia.
Population statistics:
- Bulgaria's population is 1.19 times bigger than Slovakia's.
- Bulgaria is ranked the 112th most populous country in the world, while Slovakia is the 125th.
- The countries together account for 0.14% of the world: 0.08% for Bulgaria vs 0.06% for Slovakia.
- For the last 10 years, Bulgaria has had an average growth rate of -0.96% per year vs +0.01% in Slovakia.
- Since 2006, the population of Bulgaria has decreased from 7.6M people to 6.36M (16.3% decline), while Slovakia has declined from 5.37M to 5.36M (0.25% decline).
Bulgaria vs Slovakia: population by year and forecast
| Year | Population | |
|---|---|---|
Bulgaria
|
Slovakia
|
|
| 2100 | 3,368,029 | 3,377,764 |
| 2099 | 3,392,444 | 3,399,869 |
| 2098 | 3,416,655 | 3,422,010 |
| 2097 | 3,440,938 | 3,444,161 |
| 2096 | 3,465,328 | 3,466,284 |
| 2095 | 3,489,216 | 3,488,595 |
| 2094 | 3,513,318 | 3,511,062 |
| 2093 | 3,537,356 | 3,533,742 |
| 2092 | 3,561,475 | 3,556,708 |
| 2091 | 3,585,597 | 3,580,021 |
| 2090 | 3,609,873 | 3,603,675 |
| 2089 | 3,634,642 | 3,627,811 |
| 2088 | 3,659,749 | 3,652,354 |
| 2087 | 3,685,668 | 3,677,451 |
| 2086 | 3,712,363 | 3,703,217 |
| 2085 | 3,739,898 | 3,729,670 |
| 2084 | 3,768,305 | 3,756,777 |
| 2083 | 3,797,217 | 3,784,617 |
| 2082 | 3,827,186 | 3,813,170 |
| 2081 | 3,857,721 | 3,842,528 |
| 2080 | 3,890,095 | 3,872,714 |
| 2079 | 3,923,403 | 3,903,653 |
| 2078 | 3,957,241 | 3,935,351 |
| 2077 | 3,992,168 | 3,967,981 |
| 2076 | 4,027,738 | 4,001,363 |
| 2075 | 4,064,356 | 4,035,465 |
| 2074 | 4,102,642 | 4,070,159 |
| 2073 | 4,141,518 | 4,105,475 |
| 2072 | 4,180,975 | 4,141,396 |
| 2071 | 4,221,261 | 4,177,582 |
| 2070 | 4,262,568 | 4,214,086 |
| 2069 | 4,304,304 | 4,250,775 |
| 2068 | 4,346,623 | 4,287,566 |
| 2067 | 4,389,924 | 4,324,173 |
| 2066 | 4,433,953 | 4,360,463 |
| 2065 | 4,478,521 | 4,396,562 |
| 2064 | 4,523,406 | 4,432,349 |
| 2063 | 4,568,385 | 4,467,634 |
| 2062 | 4,613,363 | 4,502,390 |
| 2061 | 4,658,825 | 4,536,423 |
| 2060 | 4,704,379 | 4,569,861 |
| 2059 | 4,749,738 | 4,602,562 |
| 2058 | 4,794,388 | 4,634,484 |
| 2057 | 4,839,236 | 4,665,491 |
| 2056 | 4,884,068 | 4,695,744 |
| 2055 | 4,929,309 | 4,725,147 |
| 2054 | 4,974,635 | 4,753,640 |
| 2053 | 5,020,162 | 4,781,680 |
| 2052 | 5,065,364 | 4,809,152 |
| 2051 | 5,110,833 | 4,836,056 |
| 2050 | 5,156,741 | 4,862,512 |
| 2049 | 5,202,941 | 4,888,649 |
| 2048 | 5,249,351 | 4,914,306 |
| 2047 | 5,296,642 | 4,939,719 |
| 2046 | 5,343,848 | 4,964,917 |
| 2045 | 5,391,354 | 4,989,905 |
| 2044 | 5,439,559 | 5,014,849 |
| 2043 | 5,488,407 | 5,039,628 |
| 2042 | 5,537,839 | 5,064,051 |
| 2041 | 5,588,510 | 5,088,319 |
| 2040 | 5,639,850 | 5,112,265 |
| 2039 | 5,692,028 | 5,135,696 |
| 2038 | 5,743,725 | 5,158,725 |
| 2037 | 5,796,645 | 5,181,188 |
| 2036 | 5,849,741 | 5,203,033 |
| 2035 | 5,902,025 | 5,224,142 |
| 2034 | 5,954,460 | 5,244,168 |
| 2033 | 6,007,050 | 5,263,308 |
| 2032 | 6,058,858 | 5,281,327 |
| 2031 | 6,111,118 | 5,298,206 |
| 2030 | 6,163,564 | 5,313,745 |
| 2029 | 6,214,784 | 5,327,761 |
| 2028 | 6,264,738 | 5,339,993 |
| 2027 | 6,313,255 | 5,350,648 |
| 2026 | 6,359,449 | 5,359,438 |
| 2025 | 6,402,394 | 5,396,894 |
| 2024 | 6,441,421 | 5,422,069 |
| 2023 | 6,446,596 | 5,426,740 |
| 2022 | 6,465,097 | 5,431,752 |
| 2021 | 6,507,301 | 5,447,247 |
| 2020 | 6,550,696 | 5,458,827 |
| 2019 | 6,616,726 | 5,454,147 |
| 2018 | 6,710,798 | 5,446,771 |
| 2017 | 6,803,468 | 5,439,232 |
| 2016 | 6,894,139 | 5,430,798 |
| 2015 | 6,984,225 | 5,423,801 |
| 2014 | 7,073,572 | 5,418,649 |
| 2013 | 7,160,005 | 5,413,393 |
| 2012 | 7,305,888 | 5,407,579 |
| 2011 | 7,348,328 | 5,398,384 |
| 2010 | 7,395,599 | 5,391,428 |
| 2009 | 7,444,443 | 5,386,406 |
| 2008 | 7,492,561 | 5,379,233 |
| 2007 | 7,545,338 | 5,374,622 |
| 2006 | 7,601,022 | 5,373,054 |
| 2005 | 7,658,972 | 5,372,807 |
| 2004 | 7,716,860 | 5,372,280 |
| 2003 | 7,775,327 | 5,373,374 |
| 2002 | 7,837,161 | 5,376,912 |
| 2001 | 8,009,142 | 5,378,867 |
| 2000 | 8,170,172 | 5,388,720 |
| 1999 | 8,210,624 | 5,396,020 |
| 1998 | 8,256,786 | 5,390,516 |
| 1997 | 8,312,068 | 5,383,291 |
| 1996 | 8,362,826 | 5,373,361 |
| 1995 | 8,406,067 | 5,361,999 |
| 1994 | 8,443,591 | 5,346,331 |
| 1993 | 8,472,313 | 5,325,305 |
| 1992 | 8,540,164 | 5,305,016 |
| 1991 | 8,632,367 | 5,303,294 |
| 1990 | 8,718,289 | 5,299,187 |
| 1989 | 8,876,972 | 5,275,942 |
| 1988 | 8,981,446 | 5,250,596 |
| 1987 | 8,971,359 | 5,222,840 |
| 1986 | 8,958,171 | 5,193,838 |
| 1985 | 8,960,547 | 5,161,768 |
| 1984 | 8,960,679 | 5,127,097 |
| 1983 | 8,939,738 | 5,091,971 |
| 1982 | 8,917,457 | 5,055,099 |
| 1981 | 8,891,117 | 5,016,105 |
| 1980 | 8,861,535 | 4,979,815 |
| 1979 | 8,825,940 | 4,938,973 |
| 1978 | 8,814,032 | 4,890,125 |
| 1977 | 8,804,183 | 4,840,501 |
| 1976 | 8,758,599 | 4,789,507 |
| 1975 | 8,720,742 | 4,739,105 |
| 1974 | 8,678,745 | 4,689,623 |
| 1973 | 8,620,967 | 4,641,445 |
| 1972 | 8,576,200 | 4,596,622 |
| 1971 | 8,536,395 | 4,557,449 |
| 1970 | 8,489,574 | 4,538,223 |
| 1969 | 8,434,172 | 4,518,607 |
| 1968 | 8,369,603 | 4,483,915 |
| 1967 | 8,310,226 | 4,449,367 |
| 1966 | 8,258,057 | 4,411,666 |
| 1965 | 8,204,168 | 4,370,983 |
| 1964 | 8,144,340 | 4,327,341 |
| 1963 | 8,078,145 | 4,282,017 |
| 1962 | 8,012,946 | 4,238,188 |
| 1961 | 7,943,118 | 4,191,667 |
| 1960 | 7,867,374 | 4,068,095 |
Data sources: United Nations | World Population Prospects (2025–2100, retrieved 2026-03-10); World Bank | Health (1960–2024, retrieved 2026-04-06).
GeoRank.org/population/bulgaria/slovakia | CC BY 
From 2006 to 2016, the population of Bulgaria decreased by 706,883 people (a 9.3% decline), while Slovakia gained 57,744 people (a 1.07% growth).
For the next 10 years, from 2016 to 2026, Bulgaria lost 534,690 people (a 7.76% decline), while Slovakia's population decreased by 71,360 people (a 1.31% decline).
Bulgaria was ranked 95th most populous country in 2006 and is 112th in 2026. Slovakia was ranked 110th in 2006 and ranked 125th now.
The UN's World Population Prospects forecasts that in 24 years (in 2050) Bulgaria's population will shrink by 18.9% to 5,156,741 people with a rank change from 112th to 128th. The population of Slovakia will decrease by 9.27% to 4,862,512 people and rank change from 125th to 129th.
Both countries are in a period of decline and in 50 years are projected to lose 36.7% of the population in Bulgaria and 25.3% in Slovakia.
Population growth rate by year
| Year | Growth rate | |
|---|---|---|
|
Bulgaria
|
Slovakia
|
|
| 2100 | -0.72% | -0.65% |
| 2099 | -0.71% | -0.65% |
| 2098 | -0.71% | -0.64% |
| 2097 | -0.7% | -0.64% |
| 2096 | -0.68% | -0.64% |
| 2095 | -0.69% | -0.64% |
| 2094 | -0.68% | -0.64% |
| 2093 | -0.68% | -0.65% |
| 2092 | -0.67% | -0.65% |
| 2091 | -0.67% | -0.66% |
| 2090 | -0.68% | -0.67% |
| 2089 | -0.69% | -0.67% |
| 2088 | -0.7% | -0.68% |
| 2087 | -0.72% | -0.7% |
| 2086 | -0.74% | -0.71% |
| 2085 | -0.75% | -0.72% |
| 2084 | -0.76% | -0.74% |
| 2083 | -0.78% | -0.75% |
| 2082 | -0.79% | -0.76% |
| 2081 | -0.83% | -0.78% |
| 2080 | -0.85% | -0.79% |
| 2079 | -0.86% | -0.81% |
| 2078 | -0.87% | -0.82% |
| 2077 | -0.88% | -0.83% |
| 2076 | -0.9% | -0.85% |
| 2075 | -0.93% | -0.85% |
| 2074 | -0.94% | -0.86% |
| 2073 | -0.94% | -0.87% |
| 2072 | -0.95% | -0.87% |
| 2071 | -0.97% | -0.87% |
| 2070 | -0.97% | -0.86% |
| 2069 | -0.97% | -0.86% |
| 2068 | -0.99% | -0.85% |
| 2067 | -0.99% | -0.83% |
| 2066 | -1% | -0.82% |
| 2065 | -0.99% | -0.81% |
| 2064 | -0.98% | -0.79% |
| 2063 | -0.97% | -0.77% |
| 2062 | -0.98% | -0.75% |
| 2061 | -0.97% | -0.73% |
| 2060 | -0.95% | -0.71% |
| 2059 | -0.93% | -0.69% |
| 2058 | -0.93% | -0.66% |
| 2057 | -0.92% | -0.64% |
| 2056 | -0.92% | -0.62% |
| 2055 | -0.91% | -0.6% |
| 2054 | -0.91% | -0.59% |
| 2053 | -0.89% | -0.57% |
| 2052 | -0.89% | -0.56% |
| 2051 | -0.89% | -0.54% |
| 2050 | -0.89% | -0.53% |
| 2049 | -0.88% | -0.52% |
| 2048 | -0.89% | -0.51% |
| 2047 | -0.88% | -0.51% |
| 2046 | -0.88% | -0.5% |
| 2045 | -0.89% | -0.5% |
| 2044 | -0.89% | -0.49% |
| 2043 | -0.89% | -0.48% |
| 2042 | -0.91% | -0.48% |
| 2041 | -0.91% | -0.47% |
| 2040 | -0.92% | -0.46% |
| 2039 | -0.9% | -0.45% |
| 2038 | -0.91% | -0.43% |
| 2037 | -0.91% | -0.42% |
| 2036 | -0.89% | -0.4% |
| 2035 | -0.88% | -0.38% |
| 2034 | -0.88% | -0.36% |
| 2033 | -0.86% | -0.34% |
| 2032 | -0.86% | -0.32% |
| 2031 | -0.85% | -0.29% |
| 2030 | -0.82% | -0.26% |
| 2029 | -0.8% | -0.23% |
| 2028 | -0.77% | -0.2% |
| 2027 | -0.73% | -0.16% |
| 2026 | -0.67% | -0.69% |
| 2025 | -0.61% | -0.46% |
| 2024 | -0.08% | -0.09% |
| 2023 | -0.29% | -0.09% |
| 2022 | -0.65% | -0.28% |
| 2021 | -0.66% | -0.21% |
| 2020 | -1% | 0.09% |
| 2019 | -1.4% | 0.14% |
| 2018 | -1.36% | 0.14% |
| 2017 | -1.32% | 0.16% |
| 2016 | -1.29% | 0.13% |
| 2015 | -1.26% | 0.1% |
| 2014 | -1.21% | 0.1% |
| 2013 | -2% | 0.11% |
| 2012 | -0.58% | 0.17% |
| 2011 | -0.64% | 0.13% |
| 2010 | -0.66% | 0.09% |
| 2009 | -0.64% | 0.13% |
| 2008 | -0.7% | 0.09% |
| 2007 | -0.73% | 0.03% |
| 2006 | -0.76% | 0.005% |
| 2005 | -0.75% | 0.01% |
| 2004 | -0.75% | -0.02% |
| 2003 | -0.79% | -0.07% |
| 2002 | -2.15% | -0.04% |
| 2001 | -1.97% | -0.18% |
| 2000 | -0.49% | -0.14% |
| 1999 | -0.56% | 0.1% |
| 1998 | -0.67% | 0.13% |
| 1997 | -0.61% | 0.18% |
| 1996 | -0.51% | 0.21% |
| 1995 | -0.44% | 0.29% |
| 1994 | -0.34% | 0.39% |
| 1993 | -0.79% | 0.38% |
| 1992 | -1.07% | 0.03% |
| 1991 | -0.99% | 0.08% |
| 1990 | -1.79% | 0.44% |
| 1989 | -1.16% | 0.48% |
| 1988 | 0.11% | 0.53% |
| 1987 | 0.15% | 0.56% |
| 1986 | -0.03% | 0.62% |
| 1985 | -0.001% | 0.68% |
| 1984 | 0.23% | 0.69% |
| 1983 | 0.25% | 0.73% |
| 1982 | 0.3% | 0.78% |
| 1981 | 0.33% | 0.73% |
| 1980 | 0.4% | 0.83% |
| 1979 | 0.14% | 1% |
| 1978 | 0.11% | 1.03% |
| 1977 | 0.52% | 1.06% |
| 1976 | 0.43% | 1.06% |
| 1975 | 0.48% | 1.06% |
| 1974 | 0.67% | 1.04% |
| 1973 | 0.52% | 0.98% |
| 1972 | 0.47% | 0.86% |
| 1971 | 0.55% | 0.42% |
| 1970 | 0.66% | 0.43% |
| 1969 | 0.77% | 0.77% |
| 1968 | 0.71% | 0.78% |
| 1967 | 0.63% | 0.85% |
| 1966 | 0.66% | 0.93% |
| 1965 | 0.73% | 1.01% |
| 1964 | 0.82% | 1.06% |
| 1963 | 0.81% | 1.03% |
| 1962 | 0.88% | 1.11% |
| 1961 | 0.96% | 3.04% |
Data sources: United Nations | World Population Prospects (2025–2100, retrieved 2026-03-10); World Bank | Health (1961–2024, retrieved 2026-04-06).
GeoRank.org/population/bulgaria/slovakia | CC BY
In 2024, the population of Bulgaria declined by 0.08%, while Slovakia's population declined by 0.09%.
Live population counters
|
Bulgaria
|
Slovakia
|
|
|---|---|---|
| Current population |
6359449
|
5359438
|
| Population rank | 112/197 | 125/197 |
| Percent of world population | 0.08% | 0.06% |
| One net population change |
1.69 hours
|
1.88 hours
|
| One birth every |
9.16 minutes
|
10.8 minutes
|
| One death every |
5.19 minutes
|
9.69 minutes
|
| Daily growth/decline | -14 | -13 |
| Annual growth/decline | -5,175 | -4,671 |
| Annual growth/decline rate | -0.08% | -0.09% |
| Population growth rate rank | 171/197 | 172/197 |
| One migration net change every |
2.97 hours
|
16.8 minutes
|
| Annual migration change | -2,961 | -31,377 |
| Net migration rank | 106/196 | 166/196 |
| Foreign-born residents | 299,100 | 323,991 |
| Foreign-born residents rank | 98/195 | 96/195 |
| Foreign-born share of population | 4.4% | 5.9% |
| Foreign-born share rank | 99/195 | 88/195 |
Natural population change vs migration
| Year | Population change | |||
|---|---|---|---|---|
|
Bulgaria
|
Slovakia
|
|||
| Natural | Migration | Natural | Migration | |
| 2025 | - | -2,961 | - | -31,377 |
| 2024 | - | 524 | - | -21,027 |
| 2023 | -43,837 | 5,173 | -5,427 | 4,933 |
| 2022 | -62,065 | 26,498 | -7,062 | 92,314 |
| 2021 | -90,452 | 11,756 | -16,886 | -8,172 |
| 2020 | -65,507 | 30,167 | -2,184 | 4,350 |
| 2019 | -46,317 | -2,156 | 3,818 | 3,128 |
| 2018 | -46,304 | -3,873 | 3,268 | 3,446 |
| 2017 | -45,583 | -6,109 | 4,351 | 3,279 |
| 2016 | -42,744 | -9,482 | 5,431 | 3,487 |
| 2015 | -44,699 | -4,227 | 2,170 | 2,549 |
| 2014 | -41,027 | -2,180 | 3,793 | -1,158 |
| 2013 | -37,948 | -1,324 | 2,707 | -1,181 |
| 2012 | -40,183 | -26,334 | 3,245 | 871 |
| 2011 | -37,477 | -23,360 | 9,177 | -2,392 |
| 2010 | -34,759 | -21,668 | 7,008 | -1,814 |
| 2009 | -26,800 | -19,060 | 8,619 | -542 |
| 2008 | -32,967 | -17,595 | 4,303 | -495 |
| 2007 | -37,727 | -16,366 | 537 | -571 |
| 2006 | -39,526 | -15,184 | 537 | -549 |
| 2005 | -42,124 | -14,435 | 537 | -561 |
| 2004 | -40,128 | -13,604 | 1,611 | -522 |
| 2003 | -44,319 | -13,183 | -537 | -646 |
| 2002 | -46,240 | -12,735 | -538 | -580 |
| 2001 | -44,050 | -30,726 | -1,076 | -860 |
| 2000 | -41,668 | -26,211 | 2,155 | -831 |
| 1999 | -39,411 | -23,846 | 3,777 | -119 |
| 1998 | -52,844 | -23,262 | 4,312 | -12 |
| 1997 | -58,185 | -22,963 | 6,999 | 247 |
| 1996 | -45,159 | -21,520 | 9,135 | 246 |
| 1995 | -42,030 | -22,020 | 9,115 | -30 |
| 1994 | -32,086 | -20,984 | 14,970 | -109 |
| 1993 | -24,569 | -19,973 | 20,769 | 72 |
| 1992 | -18,789 | -120,552 | 21,220 | -201 |
| 1991 | -14,675 | -119,356 | 23,865 | 174 |
| 1990 | -3,487 | -116,817 | 25,436 | -9,402 |
| 1989 | 5,326 | -114,705 | 26,380 | -7,254 |
| 1988 | 9,879 | 215 | 30,979 | -6,500 |
| 1987 | 8,971 | 357 | 31,859 | -6,401 |
| 1986 | 16,125 | 1,104 | 34,279 | -6,143 |
| 1985 | 11,649 | -19,230 | 37,680 | -6,068 |
| 1984 | 20,610 | -1,032 | 38,966 | -6,276 |
| 1983 | 21,455 | -1,872 | 39,717 | -6,361 |
| 1982 | 24,077 | -1,860 | 41,958 | -6,088 |
| 1981 | 29,341 | -1,830 | 43,640 | -5,821 |
| 1980 | 30,129 | -2,045 | 44,320 | -5,522 |
| 1979 | 40,599 | -872 | 52,353 | -4,712 |
| 1978 | 44,070 | -62,769 | 52,324 | -4,689 |
| 1977 | 47,543 | -11,955 | 52,762 | -4,621 |
| 1976 | 56,055 | -2,522 | 54,121 | -4,432 |
| 1975 | 54,941 | -38,071 | 52,604 | -4,652 |
| 1974 | 64,223 | -1,402 | 52,524 | -4,190 |
| 1973 | 57,760 | -5,409 | 49,199 | -3,854 |
| 1972 | 47,169 | -11,296 | 46,426 | -3,516 |
| 1971 | 52,925 | -7,654 | 40,105 | -3,495 |
| 1970 | 61,125 | -11,315 | 38,575 | -4,919 |
| 1969 | 63,256 | -3,204 | 39,312 | -8,998 |
| 1968 | 69,468 | -132 | 38,113 | -8,881 |
| 1967 | 49,861 | -420 | 41,824 | -8,876 |
| 1966 | 54,504 | -144 | 45,440 | -8,817 |
| 1965 | 58,249 | -1,406 | 48,517 | -8,707 |
| 1964 | 66,783 | 505 | 54,092 | -8,608 |
| 1963 | 66,241 | 500 | 54,382 | -8,548 |
| 1962 | 64,104 | 499 | 49,587 | -9,019 |
| 1961 | 75,460 | 378 | 55,749 | 4,812 |
| 1960 | 76,314 | -1,112 | 56,546 | 4,344 |
Data sources: World Bank | Health (1960–2025, retrieved 2026-04-06).
GeoRank.org/population/bulgaria/slovakia | CC BY
Over the last 10 years, 92.1% of the population change in Bulgaria is from natural causes (a loss of 528,535 people) and 7.94% is from migration (a gain of 45,567 people). In Slovakia 7.47% is from natural causes (a loss of 8,728 people) and 92.5% is from migration (a gain of 108,156 people).
As of 2024, 299,100 residents or 4.4% of the population were not native-born in Bulgaria, compared to 323,991 people or 5.9% in Slovakia.
Biggest cities by population
|
Bulgaria
|
|
|---|---|
| City | Population |
| Sofia | 1.21M |
| Plovdiv | 329K |
| Varna | 319K |
| Burgas | 189K |
| Stara Zagora | 121K |
| Ruse | 121K |
| Pleven | 88.6K |
| Sliven | 78.2K |
| Dobrich | 69.4K |
| Shumen | 66.6K |
|
Slovakia
|
|
|---|---|
| City | Population |
| Bratislava | 479K |
| Kosice | 224K |
| Petrzalka | 112K |
| Presov | 81.7K |
| Zilina | 80.3K |
| Nitra | 75.9K |
| Banska Bystrica | 73.5K |
| Trnava | 63.2K |
| Trencin | 54.1K |
| Martin | 50.3K |
Compare countries by 7 more topics
Population differences between Bulgaria and Slovakia
|
Bulgaria
|
Slovakia
|
|
|---|---|---|
| Life expectancy | 76.1 years | 78.8 years |
| Average age | 44.1 years | 42 years |
| Median age | 45.5 years | 42.7 years |
| Male:Female ratio | 48.4:51.6 | 48.8:51.2 |
| Fertility rate | 1.81 births per woman | 1.49 births per woman |
| Population density | 151.7 ppl/mi² | 288.7 ppl/mi² |
Population map with other countries
Data sources: World Bank | Health (1960–2024, retrieved 2026-04-06); United Nations | World Population Prospects (1960–2026, retrieved 2026-03-10); U.S. Census Bureau (1960–2025, retrieved 2026-02-08); Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-02-20).
GeoRank.org/population/bulgaria/slovakia | CC BY
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Data sources:
- World Bank | Health (1960–2025, retrieved 2026-04-06)
- United Nations | World Population Prospects (1960–2100, retrieved 2026-03-10)
- U.S. Census Bureau (1960–2025, retrieved 2026-02-08)
- Wikidata (2026, retrieved 2026-02-08)
- Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-02-20)
Creative Commons Attribution (CC BY) — you’re free to copy, share, remix, adapt, and use even commercially as long as you give appropriate credit and clearly indicate if you made changes. Other sources may be subject to different license terms.