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Fertility & birth rates in Bulgaria and Guinea-Bissau

Updated on by Georank team

Bulgaria has an annual birth rate of 8.9 births per 1,000 people, compared to 30 for Guinea-Bissau. The average number of children a woman is expected to have during her lifetime — the fertility rate, is 1.81 in Bulgaria and 3.84 in Guinea-Bissau — 111.9% difference.

1960 vs 2023, the fertility rate has decreased by 21.6% in Bulgaria and by 35.2% in Guinea-Bissau — in 1960, it was 2.31 and 5.92, respectively.

  • Bulgaria is ranked 165/196 by birth rate compared to 32/196 for Guinea-Bissau.
  • The mean age at childbearing (for all the births, not just the first) is 28.3 in Bulgaria — it's 29.4 in Guinea-Bissau.
  • Annual births per 1,000 women ages 15-19 (adolescent birth rate or teenage mother rate) is 39.1 in Bulgaria vs 82 in Guinea-Bissau.
  • In Bulgaria, 20.7% of the population is composed of women of reproductive age (15-49), compared to 25.5% in Guinea-Bissau.

Fertility rate in Bulgaria vs Guinea-Bissau by year

Bulgaria
Guinea-Bissau
1x
Year Fertility rate
Bulgaria Guinea-Bissau
2023 1.81 3.84
2022 1.78 3.91
2021 1.8 4
2020 1.77 4.08
2019 1.79 4.15
2018 1.73 4.24
2017 1.71 4.35
2016 1.67 4.52
2015 1.64 4.66
2014 1.62 4.79
2013 1.54 4.93
2012 1.5 5
2011 1.51 5.07
2010 1.57 5.11
2009 1.66 5.18
2008 1.56 5.27
2007 1.49 5.37
2006 1.44 5.41
2005 1.37 5.46
2004 1.33 5.5
2003 1.26 5.58
2002 1.23 5.63
2001 1.21 5.69
2000 1.26 5.79
1999 1.23 5.87
1998 1.11 5.97
1997 1.09 6.06
1996 1.23 6.14
1995 1.23 6.22
1994 1.37 6.3
1993 1.46 6.37
1992 1.55 6.44
1991 1.66 6.47
1990 1.82 6.5
1989 1.9 6.66
1988 1.97 6.69
1987 1.96 6.72
1986 2.02 6.73
1985 1.97 6.74
1984 2.01 6.73
1983 2.01 6.69
1982 2.01 6.64
1981 2 6.57
1980 2.05 6.49
1979 2.16 6.4
1978 2.15 6.32
1977 2.21 6.25
1976 2.24 6.19
1975 2.23 6.15
1974 2.29 6.12
1973 2.15 6.1
1972 2.03 6.08
1971 2.1 6.06
1970 2.17 6.04
1969 2.27 6.02
1968 2.27 6.01
1967 2.02 5.99
1966 2.03 5.98
1965 2.09 5.97
1964 2.19 5.96
1963 2.21 5.95
1962 2.24 5.94
1961 2.29 5.93
1960 2.31 5.92

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

GeoRank.org/birth-rate/bulgaria/guinea-bissau | 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 3.84 in Guinea-Bissau in 2023. The replacement level is considered to be 2.1 children per woman.

Check Bulgaria vs Guinea-Bissau population clock for a dynamic visualization of the changing population.

Natural population change by year

Bulgaria
Guinea-Bissau
1x
Year Natural population change
Bulgaria Guinea-Bissau
2023 -43,837 49,498
2022 -62,065 48,920
2021 -90,452 47,242
2020 -65,507 46,718
2019 -46,317 47,196
2018 -46,304 46,659
2017 -45,583 46,318
2016 -42,744 46,814
2015 -44,699 46,846
2014 -41,027 46,615
2013 -37,948 46,472
2012 -40,183 45,480
2011 -37,477 44,405
2010 -34,759 43,067
2009 -26,800 41,950
2008 -32,967 40,841
2007 -37,727 40,288
2006 -39,526 38,886
2005 -42,124 37,347
2004 -40,128 36,495
2003 -44,319 35,649
2002 -46,240 34,561
2001 -44,050 33,461
2000 -41,668 32,816
1999 -39,411 30,916
1998 -52,844 30,390
1997 -58,185 29,792
1996 -45,159 29,778
1995 -42,030 29,142
1994 -32,086 27,895
1993 -24,569 26,943
1992 -18,789 25,747
1991 -14,675 24,527
1990 -3,487 23,936
1989 5,326 24,286
1988 9,879 23,940
1987 8,971 23,549
1986 16,125 23,301
1985 11,649 23,116
1984 20,610 22,861
1983 21,455 22,542
1982 24,077 22,131
1981 29,341 21,611
1980 30,129 21,024
1979 40,599 19,736
1978 44,070 17,468
1977 47,543 15,484
1976 56,055 13,688
1975 54,941 11,998
1974 64,223 10,321
1973 57,760 8,430
1972 47,169 7,911
1971 52,925 8,183
1970 61,125 7,632
1969 63,256 7,857
1968 69,468 7,289
1967 49,861 6,742
1966 54,504 6,955
1965 58,249 7,789
1964 66,783 8,989
1963 66,241 9,190
1962 64,104 10,662
1961 75,460 10,756
1960 76,314 10,618

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

GeoRank.org/birth-rate/bulgaria/guinea-bissau | 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 +2.3% in Guinea-Bissau.

For the past 10 years, the annual natural population change has been -0.79% in Bulgaria and +2.44% in Guinea-Bissau.

Birth rate in Bulgaria vs Guinea-Bissau by year

Bulgaria
Guinea-Bissau

Annual births per 1,000 people

1x
Year Annual births per 1,000 people
Bulgaria Guinea-Bissau
2023 8.9 30
2022 8.8 30.5
2021 9 31
2020 9 31.4
2019 9.3 31.8
2018 9.3 32.4
2017 9.4 33
2016 9.4 34.2
2015 9.4 35.2
2014 9.6 36.1
2013 9.3 37.1
2012 9.5 37.6
2011 9.6 38
2010 10.2 38.3
2009 10.9 38.7
2008 10.4 39.3
2007 10 40
2006 9.7 40.3
2005 9.3 40.6
2004 9.1 40.8
2003 8.7 41.3
2002 8.5 41.6
2001 8.5 41.8
2000 9 42.3
1999 8.8 42.7
1998 7.9 43.2
1997 7.7 43.6
1996 8.6 43.9
1995 8.6 44.3
1994 9.4 44.5
1993 10 44.6
1992 10.4 44.8
1991 11.1 44.9
1990 12.1 45.3
1989 12.6 46.5
1988 13.1 46.8
1987 13 47.2
1986 13.4 47.7
1985 13.3 48.1
1984 13.6 48.4
1983 13.8 48.7
1982 13.9 48.8
1981 14 48.8
1980 14.5 48.6
1979 15.3 47.8
1978 15.5 45.3
1977 16.1 44
1976 16.5 42.5
1975 16.6 40.8
1974 17.2 38.8
1973 16.2 39.1
1972 15.3 38.6
1971 15.9 39.5
1970 16.3 38.6
1969 17 39.6
1968 16.9 38.8
1967 15 38.6
1966 14.9 40
1965 15.3 41.9
1964 16.1 44
1963 16.4 44.1
1962 16.7 44.6
1961 17.4 45.2
1960 17.8 45.4

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

GeoRank.org/birth-rate/bulgaria/guinea-bissau | CC BY

The latest reported birth rate per 1,000 people in 2023 was 8.9 in Bulgaria and 30 in Guinea-Bissau, compared with 17.8 and 45.4, respectively, in 1960.

Birth rate data compared

Bulgaria Guinea-Bissau
Fertility rate 1.81 3.84
Fertility rate rank 110/196 32/196
Birth rate 8.9 30
Birth rate rank 165/196 32/196
Population change due to births and deaths -43,837 +49,498
Natural population change rank 182/196 95/196
Natural population change rate -0.68% +2.3%
Population growth -0.08% +2.23%
Population growth rank 171/197 42/197
Age at first childbirth 26.9 years n/a
Average age at childbearing 28.3 years 29.4 years
Annual births per 1,000 women ages 15-19 36 78.1
Annual births per 1,000 women ages 20-29 86.2 164.4
Annual births per 1,000 women ages 30+ 10.7 58.1
Female of reproductive age (15-49), share of population 20.7% 25.5%
Any modern method of contraceptive prevalence among married women ages 15-49 39.6% 20.2%
Share of births attended by skilled health staff 94.5% 53.8%
Maternal mortality per live birth 0.006% 0.51%
Neonatal mortality rate (before reaching 28 days of age) 0.26% 3.27%
Infant mortality rate (before reaching 1 year of age) 0.5% 4.31%
Mortality rate before reaching 5 years of age 0.61% 6.93%
Life expectancy 76.1 years 64.6 years

Children 0-14 years as share of population

Bulgaria
Factual

UN forecast
Guinea-Bissau
Factual

UN forecast
1x
Year Young
Bulgaria Guinea-Bissau
2100 13% 19.7%
2099 13.1% 19.8%
2098 13.1% 19.9%
2097 13.1% 20%
2096 13.2% 20.2%
2095 13.2% 20.3%
2094 13.3% 20.4%
2093 13.4% 20.5%
2092 13.4% 20.6%
2091 13.4% 20.8%
2090 13.5% 20.9%
2089 13.5% 21%
2088 13.6% 21.2%
2087 13.6% 21.3%
2086 13.6% 21.5%
2085 13.6% 21.6%
2084 13.6% 21.8%
2083 13.6% 21.9%
2082 13.6% 22.1%
2081 13.6% 22.2%
2080 13.6% 22.4%
2079 13.6% 22.6%
2078 13.6% 22.7%
2077 13.6% 22.9%
2076 13.6% 23.1%
2075 13.5% 23.3%
2074 13.5% 23.4%
2073 13.5% 23.6%
2072 13.5% 23.8%
2071 13.5% 24%
2070 13.5% 24.2%
2069 13.6% 24.4%
2068 13.6% 24.6%
2067 13.6% 24.8%
2066 13.6% 25.1%
2065 13.6% 25.3%
2064 13.7% 25.5%
2063 13.7% 25.7%
2062 13.7% 26%
2061 13.8% 26.2%
2060 13.8% 26.5%
2059 13.8% 26.7%
2058 13.9% 27%
2057 13.9% 27.3%
2056 13.9% 27.5%
2055 13.9% 27.8%
2054 13.9% 28.1%
2053 13.9% 28.4%
2052 13.9% 28.7%
2051 13.8% 29%
2050 13.8% 29.3%
2049 13.8% 29.6%
2048 13.7% 29.9%
2047 13.7% 30.2%
2046 13.6% 30.5%
2045 13.6% 30.9%
2044 13.6% 31.2%
2043 13.6% 31.5%
2042 13.6% 31.9%
2041 13.6% 32.2%
2040 13.6% 32.5%
2039 13.6% 32.9%
2038 13.7% 33.2%
2037 13.7% 33.6%
2036 13.7% 33.9%
2035 13.7% 34.3%
2034 13.8% 34.6%
2033 13.8% 35%
2032 13.9% 35.3%
2031 14% 35.7%
2030 14.1% 36.2%
2029 14.2% 36.6%
2028 14.2% 37.1%
2027 14.3% 37.6%
2026 14.4% 38.1%
2025 14.4% 38.6%
2024 14.5% 38.8%
2023 14.5% 39.2%
2022 14.5% 39.7%
2021 14.5% 40.1%
2020 14.4% 40.5%
2019 14.4% 40.9%
2018 14.3% 41.3%
2017 14.2% 41.7%
2016 14% 42%
2015 13.9% 42.2%
2014 13.8% 42.5%
2013 13.7% 42.7%
2012 13.6% 42.8%
2011 13.5% 43%
2010 13.5% 43.2%
2009 13.4% 43.3%
2008 13.3% 43.5%
2007 13.4% 43.6%
2006 13.5% 43.8%
2005 13.7% 43.9%
2004 14% 44%
2003 14.4% 44.2%
2002 14.8% 44.3%
2001 15.2% 44.5%
2000 15.7% 44.7%
1999 16.1% 44.8%
1998 16.5% 45%
1997 17% 45.1%
1996 17.4% 45.2%
1995 17.9% 45.3%
1994 18.3% 45.4%
1993 18.8% 45.4%
1992 19.3% 45.5%
1991 19.8% 45.5%
1990 20.3% 45.7%
1989 20.8% 45.8%
1988 21.1% 45.9%
1987 21.3% 45.9%
1986 21.4% 46%
1985 21.6% 45.9%
1984 21.8% 45.9%
1983 22% 45.7%
1982 22.1% 45.5%
1981 22.1% 45.3%
1980 22.1% 45%
1979 22.1% 45.1%
1978 22.2% 44.8%
1977 22.2% 43.7%
1976 22.3% 42.6%
1975 22.3% 41.8%
1974 22.2% 41.4%
1973 22.3% 41.6%
1972 22.4% 41.9%
1971 22.6% 41.9%
1970 22.8% 41.9%
1969 23% 41.9%
1968 23.2% 41.8%
1967 23.4% 42.1%
1966 23.8% 41.9%
1965 24.2% 41%
1964 24.7% 39.6%
1963 25.1% 38.4%
1962 25.4% 37.7%
1961 25.8% 37.1%
1960 26.1% 36.9%

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/guinea-bissau | CC BY

Children aged 0-14 make up 14.5% of the population in Bulgaria and 38.8% in Guinea-Bissau in 2024, compared to 20.3% and 45.7% respectively in 1990.

Demographics of Bulgaria and Guinea-Bissau compared.

Fertility rates around the globe

1x

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

GeoRank.org/birth-rate/bulgaria/guinea-bissau | CC BY

Maternal mortality chart: Bulgaria vs Guinea-Bissau

Bulgaria
Guinea-Bissau
1x
Year Maternal mortality per 100K births
Bulgaria Guinea-Bissau
2023 6 505
2022 10 539
2021 9 617
2020 9 603
2019 6 598
2018 7 585
2017 7 597
2016 7 617
2015 7 631
2014 7 662
2013 7 707
2012 7 704
2011 8 678
2010 9 698
2009 9 753
2008 10 802
2007 11 792
2006 12 831
2005 13 956
2004 14 980
2003 14 1,069
2002 15 1,141
2001 17 1,222
2000 19 1,295
1999 20 1,461
1998 20 1,465
1997 23 1,642
1996 22 1,539
1995 23 1,556
1994 25 1,644
1993 23 1,613
1992 25 1,633
1991 25 1,663
1990 27 1,709
1989 25 1,698
1988 26 1,759
1987 25 1,796
1986 25 1,825
1985 26 1,851

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

GeoRank.org/birth-rate/bulgaria/guinea-bissau | 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 505 deaths in Guinea-Bissau.

Under-five mortality rates

Bulgaria
Guinea-Bissau

Probability that a newborn baby will die before reaching age five

1x
Year Under 5 mortality rate
Bulgaria Guinea-Bissau
2023 0.61% 6.93%
2022 0.62% 7.16%
2021 0.63% 7.41%
2020 0.65% 7.66%
2019 0.67% 7.91%
2018 0.7% 8.21%
2017 0.73% 8.53%
2016 0.77% 8.84%
2015 0.82% 9.18%
2014 0.87% 9.53%
2013 0.93% 9.93%
2012 0.99% 10.4%
2011 1.04% 10.9%
2010 1.08% 11.4%
2009 1.12% 12%
2008 1.14% 12.6%
2007 1.18% 13.2%
2006 1.24% 13.9%
2005 1.33% 14.5%
2004 1.42% 15.1%
2003 1.51% 15.7%
2002 1.6% 16.3%
2001 1.68% 16.8%
2000 1.75% 17.4%
1999 1.82% 17.9%
1998 1.89% 18.4%
1997 1.93% 18.9%
1996 1.94% 19.4%
1995 1.92% 19.9%
1994 1.91% 20.4%
1993 1.92% 20.9%
1992 1.92% 21.3%
1991 1.89% 21.8%
1990 1.83% 22.2%
1989 1.79% 22.7%
1988 1.78% 23.1%
1987 1.8% 23.5%
1986 1.87% 24%
1985 1.97% 24.4%
1984 2.07% -
1983 2.15% -
1982 2.22% -
1981 2.3% -
1980 2.38% -
1979 2.49% -
1978 2.6% -
1977 2.72% -
1976 2.8% -
1975 2.86% -
1974 2.91% -
1973 2.95% -
1972 3.01% -
1971 3.11% -
1970 3.25% -
1969 3.4% -
1968 3.54% -
1967 3.64% -
1966 3.7% -
1965 3.75% -
1964 3.86% -
1963 4.08% -
1962 4.43% -
1961 4.89% -
1960 5.47% -

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

GeoRank.org/birth-rate/bulgaria/guinea-bissau | CC BY

The chance that a newborn baby will die before reaching age five is 0.61% in Bulgaria and 6.93% in Guinea-Bissau. 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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