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Fertility & birth rates in Bulgaria and South Sudan

Updated on by Georank team

Bulgaria has an annual birth rate of 8.9 births per 1,000 people, compared to 28.6 for South Sudan. The average number of children a woman is expected to have during her lifetime — the fertility rate, is 1.81 in Bulgaria and 3.86 in South Sudan — 113.5% difference.

1960 vs 2023, the fertility rate has decreased by 21.6% in Bulgaria and by 46% in South Sudan — in 1960, it was 2.31 and 7.16, respectively.

  • Bulgaria is ranked 165/196 by birth rate compared to 36/196 for South Sudan.
  • The mean age at childbearing (for all the births, not just the first) is 28.3 in Bulgaria — it's 28.4 in South Sudan.
  • Annual births per 1,000 women ages 15-19 (adolescent birth rate or teenage mother rate) is 39.1 in Bulgaria vs 97.1 in South Sudan.
  • In Bulgaria, 20.7% of the population is composed of women of reproductive age (15-49), compared to 25.1% in South Sudan.

Fertility rate in Bulgaria vs South Sudan by year

Bulgaria
South Sudan
1x
Year Fertility rate
Bulgaria South Sudan
2023 1.81 3.86
2022 1.78 3.96
2021 1.8 4.05
2020 1.77 4.16
2019 1.79 4.26
2018 1.73 4.37
2017 1.71 4.48
2016 1.67 4.58
2015 1.64 4.7
2014 1.62 4.82
2013 1.54 4.94
2012 1.5 5.06
2011 1.51 5.19
2010 1.57 5.32
2009 1.66 5.45
2008 1.56 5.57
2007 1.49 5.7
2006 1.44 5.85
2005 1.37 6.02
2004 1.33 6.19
2003 1.26 6.35
2002 1.23 6.52
2001 1.21 6.65
2000 1.26 6.8
1999 1.23 6.94
1998 1.11 7.08
1997 1.09 7.2
1996 1.23 7.32
1995 1.23 7.34
1994 1.37 7.35
1993 1.46 7.36
1992 1.55 7.37
1991 1.66 7.38
1990 1.82 7.38
1989 1.9 7.37
1988 1.97 7.38
1987 1.96 7.39
1986 2.02 7.38
1985 1.97 7.36
1984 2.01 7.35
1983 2.01 7.34
1982 2.01 7.34
1981 2 7.33
1980 2.05 7.33
1979 2.16 7.32
1978 2.15 7.33
1977 2.21 7.33
1976 2.24 7.33
1975 2.23 7.33
1974 2.29 7.31
1973 2.15 7.31
1972 2.03 7.31
1971 2.1 7.3
1970 2.17 7.29
1969 2.27 7.28
1968 2.27 7.26
1967 2.02 7.26
1966 2.03 7.25
1965 2.09 7.22
1964 2.19 7.22
1963 2.21 7.2
1962 2.24 7.2
1961 2.29 7.18
1960 2.31 7.16

Data sources: World Bank | Health (1960–2023, retrieved 2026-04-06).

GeoRank.org/birth-rate/bulgaria/south-sudan | CC BY

According to the latest available data on birth rates, the fertility rate in Bulgaria was 1.81 children per woman in 2023, compared to 3.86 in South Sudan in 2023. The replacement level is considered to be 2.1 children per woman.

Check Bulgaria vs South Sudan population clock for a dynamic visualization of the changing population.

Natural population change by year

Bulgaria
South Sudan
1x
Year Natural population change
Bulgaria South Sudan
2023 -43,837 217,966
2022 -62,065 211,166
2021 -90,452 213,567
2020 -65,507 212,332
2019 -46,317 209,708
2018 -46,304 168,497
2017 -45,583 72,193
2016 -42,744 110,553
2015 -44,699 148,542
2014 -41,027 227,611
2013 -37,948 315,983
2012 -40,183 312,974
2011 -37,477 303,181
2010 -34,759 287,409
2009 -26,800 278,859
2008 -32,967 268,268
2007 -37,727 256,546
2006 -39,526 246,706
2005 -42,124 239,272
2004 -40,128 231,877
2003 -44,319 225,822
2002 -46,240 212,014
2001 -44,050 204,108
2000 -41,668 196,055
1999 -39,411 180,721
1998 -52,844 -12,157
1997 -58,185 121,454
1996 -45,159 116,728
1995 -42,030 110,417
1994 -32,086 165,407
1993 -24,569 32,779
1992 -18,789 28,874
1991 -14,675 87,873
1990 -3,487 82,900
1989 5,326 83,735
1988 9,879 -125,447
1987 8,971 5,756
1986 16,125 99,502
1985 11,649 95,342
1984 20,610 90,970
1983 21,455 104,107
1982 24,077 118,641
1981 29,341 115,163
1980 30,129 112,307
1979 40,599 109,540
1978 44,070 107,352
1977 47,543 104,886
1976 56,055 102,346
1975 54,941 99,882
1974 64,223 97,181
1973 57,760 94,765
1972 47,169 74,803
1971 52,925 72,308
1970 61,125 44,776
1969 63,256 42,015
1968 69,468 44,213
1967 49,861 41,357
1966 54,504 38,523
1965 58,249 51,682
1964 66,783 64,786
1963 66,241 46,333
1962 64,104 47,406
1961 75,460 45,186
1960 76,314 42,945

Data sources: World Bank | Health (1960–2023, retrieved 2026-04-06).

GeoRank.org/birth-rate/bulgaria/south-sudan | CC BY

The chart above illustrates the comparison of the absolute yearly changes in population resulting from births and deaths.

Excluding migration, the natural population change due to births and deaths from 2022 to 2023 was -0.68% in Bulgaria and +1.9% in South Sudan.

For the past 10 years, the annual natural population change has been -0.79% in Bulgaria and +1.65% in South Sudan.

Birth rate in Bulgaria vs South Sudan by year

Bulgaria
South Sudan

Annual births per 1,000 people

1x
Year Annual births per 1,000 people
Bulgaria South Sudan
2023 8.9 28.6
2022 8.8 29.1
2021 9 29.7
2020 9 29.4
2019 9.3 29.4
2018 9.3 29.1
2017 9.4 32.8
2016 9.4 35.1
2015 9.4 35.4
2014 9.6 38.2
2013 9.3 38.3
2012 9.5 39.1
2011 9.6 39.8
2010 10.2 39.9
2009 10.9 41
2008 10.4 41.6
2007 10 42.3
2006 9.7 43.2
2005 9.3 44.3
2004 9.1 45.5
2003 8.7 46.8
2002 8.5 48
2001 8.5 48.9
2000 9 49.8
1999 8.8 50.7
1998 7.9 51.2
1997 7.7 51.6
1996 8.6 52.6
1995 8.6 52.7
1994 9.4 52.7
1993 10 52.7
1992 10.4 52.5
1991 11.1 52.4
1990 12.1 52.3
1989 12.6 53.1
1988 13.1 51.9
1987 13 50.6
1986 13.4 50.6
1985 13.3 50.7
1984 13.6 50.8
1983 13.8 51.1
1982 13.9 51.4
1981 14 51.7
1980 14.5 52
1979 15.3 52.3
1978 15.5 52.7
1977 16.1 53
1976 16.5 53.4
1975 16.6 53.7
1974 17.2 53.9
1973 16.2 54.3
1972 15.3 54.5
1971 15.9 54.6
1970 16.3 54.5
1969 17 54.3
1968 16.9 54
1967 15 53.7
1966 14.9 53.5
1965 15.3 53.1
1964 16.1 53
1963 16.4 52.7
1962 16.7 52.5
1961 17.4 52.3
1960 17.8 52

Data sources: World Bank | Health (1960–2023, retrieved 2026-04-06).

GeoRank.org/birth-rate/bulgaria/south-sudan | CC BY

The latest reported birth rate per 1,000 people in 2023 was 8.9 in Bulgaria and 28.6 in South Sudan, compared with 17.8 and 52, respectively, in 1960.

Birth rate data compared

Bulgaria South Sudan
Fertility rate 1.81 3.86
Fertility rate rank 110/196 31/196
Birth rate 8.9 28.6
Birth rate rank 165/196 36/196
Population change due to births and deaths -43,837 +217,966
Natural population change rank 182/196 58/196
Natural population change rate -0.68% +1.9%
Population growth -0.08% +4.01%
Population growth rank 171/197 7/197
Age at first childbirth 26.9 years n/a
Average age at childbearing 28.3 years 28.4 years
Annual births per 1,000 women ages 15-19 36 95.7
Annual births per 1,000 women ages 20-29 86.2 173.3
Annual births per 1,000 women ages 30+ 10.7 43.7
Female of reproductive age (15-49), share of population 20.7% 25.1%
Any modern method of contraceptive prevalence among married women ages 15-49 39.6% 1.59%
Share of births attended by skilled health staff 94.5% 39.7%
Maternal mortality per live birth 0.006% 0.69%
Neonatal mortality rate (before reaching 28 days of age) 0.26% 4.02%
Infant mortality rate (before reaching 1 year of age) 0.5% 7.26%
Mortality rate before reaching 5 years of age 0.61% 9.87%
Life expectancy 76.1 years 58 years

Children 0-14 years as share of population

Bulgaria
Factual

UN forecast
South Sudan
Factual

UN forecast
1x
Year Young
Bulgaria South Sudan
2100 13% 20.1%
2099 13.1% 20.2%
2098 13.1% 20.3%
2097 13.1% 20.3%
2096 13.2% 20.4%
2095 13.2% 20.5%
2094 13.3% 20.6%
2093 13.4% 20.7%
2092 13.4% 20.9%
2091 13.4% 21%
2090 13.5% 21.1%
2089 13.5% 21.2%
2088 13.6% 21.3%
2087 13.6% 21.5%
2086 13.6% 21.6%
2085 13.6% 21.8%
2084 13.6% 21.9%
2083 13.6% 22.1%
2082 13.6% 22.3%
2081 13.6% 22.4%
2080 13.6% 22.6%
2079 13.6% 22.8%
2078 13.6% 23%
2077 13.6% 23.2%
2076 13.6% 23.3%
2075 13.5% 23.5%
2074 13.5% 23.7%
2073 13.5% 23.9%
2072 13.5% 24.1%
2071 13.5% 24.3%
2070 13.5% 24.5%
2069 13.6% 24.7%
2068 13.6% 25%
2067 13.6% 25.2%
2066 13.6% 25.4%
2065 13.6% 25.6%
2064 13.7% 25.8%
2063 13.7% 26%
2062 13.7% 26.3%
2061 13.8% 26.5%
2060 13.8% 26.7%
2059 13.8% 27%
2058 13.9% 27.2%
2057 13.9% 27.5%
2056 13.9% 27.8%
2055 13.9% 28.1%
2054 13.9% 28.5%
2053 13.9% 28.8%
2052 13.9% 29.2%
2051 13.8% 29.5%
2050 13.8% 29.9%
2049 13.8% 30.3%
2048 13.7% 30.8%
2047 13.7% 31.2%
2046 13.6% 31.6%
2045 13.6% 32%
2044 13.6% 32.4%
2043 13.6% 32.7%
2042 13.6% 33%
2041 13.6% 33.3%
2040 13.6% 33.6%
2039 13.6% 33.8%
2038 13.7% 33.9%
2037 13.7% 34.1%
2036 13.7% 34.2%
2035 13.7% 34.3%
2034 13.8% 34.4%
2033 13.8% 34.3%
2032 13.9% 34.4%
2031 14% 34.6%
2030 14.1% 34.8%
2029 14.2% 35.2%
2028 14.2% 35.8%
2027 14.3% 36.6%
2026 14.4% 37.5%
2025 14.4% 38.4%
2024 14.5% 38.9%
2023 14.5% 39.9%
2022 14.5% 40.9%
2021 14.5% 41.6%
2020 14.4% 42.4%
2019 14.4% 43.6%
2018 14.3% 44.9%
2017 14.2% 45%
2016 14% 43.7%
2015 13.9% 43.1%
2014 13.8% 42.5%
2013 13.7% 41.9%
2012 13.6% 41.9%
2011 13.5% 42.2%
2010 13.5% 42.8%
2009 13.4% 43.4%
2008 13.3% 43.8%
2007 13.4% 44.3%
2006 13.5% 44.8%
2005 13.7% 45.3%
2004 14% 45.8%
2003 14.4% 45.9%
2002 14.8% 45.7%
2001 15.2% 45.5%
2000 15.7% 45.5%
1999 16.1% 45.6%
1998 16.5% 45.8%
1997 17% 46%
1996 17.4% 46%
1995 17.9% 45.8%
1994 18.3% 45.8%
1993 18.8% 45.7%
1992 19.3% 45.6%
1991 19.8% 45.5%
1990 20.3% 45.4%
1989 20.8% 45.4%
1988 21.1% 46.2%
1987 21.3% 46.9%
1986 21.4% 46.7%
1985 21.6% 46.6%
1984 21.8% 46.5%
1983 22% 46.3%
1982 22.1% 46.2%
1981 22.1% 46%
1980 22.1% 45.8%
1979 22.1% 45.7%
1978 22.2% 45.5%
1977 22.2% 45.4%
1976 22.3% 45.3%
1975 22.3% 45.2%
1974 22.2% 45.1%
1973 22.3% 45%
1972 22.4% 44.8%
1971 22.6% 44.7%
1970 22.8% 44.5%
1969 23% 44.3%
1968 23.2% 44%
1967 23.4% 43.8%
1966 23.8% 43.5%
1965 24.2% 43.3%
1964 24.7% 43%
1963 25.1% 42.8%
1962 25.4% 42.6%
1961 25.8% 42.6%
1960 26.1% 42.5%

Data sources: World Bank | Health (1960–2024, retrieved 2026-04-06); United Nations | World Population Prospects (2025–2100, retrieved 2026-03-10).

GeoRank.org/birth-rate/bulgaria/south-sudan | CC BY

Children aged 0-14 make up 14.5% of the population in Bulgaria and 38.9% in South Sudan in 2024, compared to 20.3% and 45.4% respectively in 1990.

Demographics of Bulgaria and South Sudan compared.

Fertility rates around the globe

1x

Data sources: World Bank | Health (1960–2023, retrieved 2026-04-06).

GeoRank.org/birth-rate/bulgaria/south-sudan | CC BY

Maternal mortality chart: Bulgaria vs South Sudan

Bulgaria
South Sudan
1x
Year Maternal mortality per 100K births
Bulgaria South Sudan
2023 6 692
2022 10 704
2021 9 749
2020 9 729
2019 6 745
2018 7 913
2017 7 1,662
2016 7 1,629
2015 7 1,436
2014 7 1,216
2013 7 771
2012 7 755
2011 8 770
2010 9 776
2009 9 823
2008 10 858
2007 11 933
2006 12 1,005
2005 13 1,074
2004 14 1,150
2003 14 1,199
2002 15 1,521
2001 17 1,580
2000 19 1,658
1999 20 2,048
1998 20 7,514
1997 23 4,172
1996 22 4,357
1995 23 4,430
1994 25 1,666
1993 23 7,537
1992 25 7,597
1991 25 4,764
1990 27 4,877
1989 25 5,103
1988 26 5,535
1987 25 8,045
1986 25 3,720
1985 26 3,845

Data sources: World Bank | Gender (1985–2023, retrieved 2026-04-06).

GeoRank.org/birth-rate/bulgaria/south-sudan | CC BY

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 6 deaths per 100,000 live births in Bulgaria, compared to 692 deaths in South Sudan.

Under-five mortality rates

Bulgaria
South Sudan

Probability that a newborn baby will die before reaching age five

1x
Year Under 5 mortality rate
Bulgaria South Sudan
2023 0.61% 9.87%
2022 0.62% 9.87%
2021 0.63% 9.87%
2020 0.65% 9.87%
2019 0.67% 9.87%
2018 0.7% 13.2%
2017 0.73% 27.8%
2016 0.77% 26.4%
2015 0.82% 23.7%
2014 0.87% 18.2%
2013 0.93% 9.92%
2012 0.99% 10.1%
2011 1.04% 10.5%
2010 1.08% 10.9%
2009 1.12% 11.5%
2008 1.14% 12.1%
2007 1.18% 12.7%
2006 1.24% 13.4%
2005 1.33% 14.1%
2004 1.42% 14.8%
2003 1.51% 15.7%
2002 1.6% 16.5%
2001 1.68% 17.4%
2000 1.75% 18.3%
1999 1.82% 19.2%
1998 1.89% 42.6%
1997 1.93% 25.2%
1996 1.94% 26.1%
1995 1.92% 27%
1994 1.91% 23%
1993 1.92% 33.1%
1992 1.92% 33.8%
1991 1.89% 29.7%
1990 1.83% 30.3%
1989 1.79% 30.7%
1988 1.78% 76.7%
1987 1.8% 36%
1986 1.87% 26.7%
1985 1.97% 27.1%
1984 2.07% 27.5%
1983 2.15% 27.8%
1982 2.22% 28.2%
1981 2.3% 28.5%
1980 2.38% 28.9%
1979 2.49% 29.2%
1978 2.6% 29.5%
1977 2.72% 29.9%
1976 2.8% 30.2%
1975 2.86% 30.6%
1974 2.91% 30.9%
1973 2.95% 31.3%
1972 3.01% 31.6%
1971 3.11% 31.9%
1970 3.25% 32.3%
1969 3.4% 32.6%
1968 3.54% 32.9%
1967 3.64% 33.3%
1966 3.7% 33.6%
1965 3.75% 34%
1964 3.86% 34.3%
1963 4.08% 34.6%
1962 4.43% 34.9%
1961 4.89% 35.2%
1960 5.47% 35.5%

Data sources: World Bank | Health (1960–2023, retrieved 2026-04-06).

GeoRank.org/birth-rate/bulgaria/south-sudan | CC BY

The chance that a newborn baby will die before reaching age five is 0.61% in Bulgaria and 9.87% in South Sudan. Above is a chart with historical data on under-five mortality rates.

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Data sources:

  1. World Bank | Health (1960–2024, retrieved 2026-04-06)
  2. United Nations | World Population Prospects (2025–2100, retrieved 2026-03-10)
  3. United Nations Economic Commission for Europe (UNECE) (2023, retrieved 2026-03-10)

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