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Fertility & birth rates in Guinea-Bissau and Sri Lanka

Updated on by Georank team

Guinea-Bissau has an annual birth rate of 30 births per 1,000 people, compared to 11.2 for Sri Lanka. The average number of children a woman is expected to have during her lifetime — the fertility rate, is 3.84 in Guinea-Bissau and 1.97 in Sri Lanka — 48.5% difference.

1960 vs 2023, the fertility rate has decreased by 35.2% in Guinea-Bissau and by 63.1% in Sri Lanka — in 1960, it was 5.92 and 5.35, respectively.

  • Guinea-Bissau is ranked 32/196 by birth rate compared to 125/196 for Sri Lanka.
  • The mean age at childbearing (for all the births, not just the first) is 29.4 in Guinea-Bissau — it's 29.7 in Sri Lanka.
  • Annual births per 1,000 women ages 15-19 (adolescent birth rate or teenage mother rate) is 82 in Guinea-Bissau vs 15.1 in Sri Lanka.
  • In Guinea-Bissau, 25.5% of the population is composed of women of reproductive age (15-49), compared to 25.1% in Sri Lanka.

Fertility rate in Guinea-Bissau vs Sri Lanka by year

Guinea-Bissau
Sri Lanka
1x
Year Fertility rate
Guinea-Bissau Sri Lanka
2023 3.84 1.97
2022 3.91 1.98
2021 4 2
2020 4.08 2.01
2019 4.15 2.02
2018 4.24 2.03
2017 4.35 2.04
2016 4.52 2.06
2015 4.66 2.09
2014 4.79 2.13
2013 4.93 2.18
2012 5 2.17
2011 5.07 2.14
2010 5.11 2.13
2009 5.18 2.18
2008 5.27 2.23
2007 5.37 2.3
2006 5.41 2.29
2005 5.46 2.26
2004 5.5 2.27
2003 5.58 2.3
2002 5.63 2.31
2001 5.69 2.28
2000 5.79 2.21
1999 5.87 2.14
1998 5.97 2.14
1997 6.06 2.22
1996 6.14 2.29
1995 6.22 2.35
1994 6.3 2.4
1993 6.37 2.44
1992 6.44 2.49
1991 6.47 2.51
1990 6.5 2.54
1989 6.66 2.58
1988 6.69 2.57
1987 6.72 2.64
1986 6.73 2.74
1985 6.74 2.9
1984 6.73 3.01
1983 6.69 3.11
1982 6.64 3.32
1981 6.57 3.65
1980 6.49 3.73
1979 6.4 3.82
1978 6.32 3.81
1977 6.25 3.74
1976 6.19 3.78
1975 6.15 3.82
1974 6.12 3.86
1973 6.1 4
1972 6.08 4.16
1971 6.06 4.27
1970 6.04 4.39
1969 6.02 4.5
1968 6.01 4.66
1967 5.99 4.79
1966 5.98 4.83
1965 5.97 4.93
1964 5.96 5.06
1963 5.95 5.12
1962 5.94 5.18
1961 5.93 5.24
1960 5.92 5.35

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

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

According to the latest available data on birth rates, the fertility rate in Guinea-Bissau was 3.84 children per woman in 2023, compared to 1.97 in Sri Lanka in 2023. The replacement level is considered to be 2.1 children per woman.

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

Natural population change by year

Guinea-Bissau
Sri Lanka
1x
Year Natural population change
Guinea-Bissau Sri Lanka
2023 49,498 66,111
2022 48,920 95,378
2021 47,242 121,858
2020 46,718 170,968
2019 47,196 172,243
2018 46,659 183,610
2017 46,318 187,993
2016 46,814 194,232
2015 46,846 201,815
2014 46,615 211,541
2013 46,472 221,021
2012 45,480 229,138
2011 44,405 224,461
2010 43,067 224,325
2009 41,950 200,175
2008 40,841 232,225
2007 40,288 248,287
2006 38,886 248,706
2005 37,347 248,683
2004 36,495 212,527
2003 35,649 252,008
2002 34,561 252,840
2001 33,461 244,377
2000 32,816 227,060
1999 30,916 206,876
1998 30,390 201,059
1997 29,792 208,193
1996 29,778 215,290
1995 29,142 221,957
1994 27,895 228,904
1993 26,943 226,257
1992 25,747 222,230
1991 24,527 218,117
1990 23,936 224,454
1989 24,286 212,401
1988 23,940 219,184
1987 23,549 226,414
1986 23,301 233,782
1985 23,116 247,836
1984 22,861 263,175
1983 22,542 277,768
1982 22,131 300,030
1981 21,611 328,096
1980 21,024 328,155
1979 19,736 329,791
1978 17,468 317,055
1977 15,484 300,038
1976 13,688 291,816
1975 11,998 282,496
1974 10,321 275,521
1973 8,430 278,577
1972 7,911 282,494
1971 8,183 281,200
1970 7,632 286,719
1969 7,857 286,218
1968 7,289 286,642
1967 6,742 284,738
1966 6,955 275,549
1965 7,789 272,422
1964 8,989 269,584
1963 9,190 262,880
1962 10,662 256,719
1961 10,756 251,087
1960 10,618 247,631

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

GeoRank.org/birth-rate/guinea-bissau/sri-lanka | 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 +2.3% in Guinea-Bissau and +0.3% in Sri Lanka.

For the past 10 years, the annual natural population change has been +2.44% in Guinea-Bissau and +0.75% in Sri Lanka.

Birth rate in Guinea-Bissau vs Sri Lanka by year

Guinea-Bissau
Sri Lanka

Annual births per 1,000 people

1x
Year Annual births per 1,000 people
Guinea-Bissau Sri Lanka
2023 30 11.2
2022 30.5 12.4
2021 31 12.9
2020 31.4 13.8
2019 31.8 14.6
2018 32.4 15.2
2017 33 15.4
2016 34.2 15.7
2015 35.2 16
2014 36.1 16.5
2013 37.1 17
2012 37.6 17.1
2011 38 17.1
2010 38.3 17.1
2009 38.7 17.6
2008 39.3 18.2
2007 40 18.8
2006 40.3 18.9
2005 40.6 18.7
2004 40.8 18.8
2003 41.3 19.1
2002 41.6 19.2
2001 41.8 19
2000 42.3 18.4
1999 42.7 17.9
1998 43.2 17.8
1997 43.6 18.5
1996 43.9 19
1995 44.3 19.6
1994 44.5 20
1993 44.6 20
1992 44.8 20.1
1991 44.9 20.2
1990 45.3 20.5
1989 46.5 20.6
1988 46.8 20.3
1987 47.2 20.8
1986 47.7 21.4
1985 48.1 22.4
1984 48.4 23.5
1983 48.7 24.4
1982 48.8 26
1981 48.8 28.1
1980 48.6 28.6
1979 47.8 29.3
1978 45.3 29
1977 44 28.3
1976 42.5 28.3
1975 40.8 28.2
1974 38.8 28.2
1973 39.1 28.9
1972 38.6 29.7
1971 39.5 30.2
1970 38.6 31.2
1969 39.6 31.8
1968 38.8 32.6
1967 38.6 33.2
1966 40 33.2
1965 41.9 33.8
1964 44 34.5
1963 44.1 34.7
1962 44.6 35.1
1961 45.2 35.6
1960 45.4 36.3

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

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

The latest reported birth rate per 1,000 people in 2023 was 30 in Guinea-Bissau and 11.2 in Sri Lanka, compared with 45.4 and 36.3, respectively, in 1960.

Birth rate data compared

Guinea-Bissau Sri Lanka
Fertility rate 3.84 1.97
Fertility rate rank 32/196 101/196
Birth rate 30 11.2
Birth rate rank 32/196 125/196
Population change due to births and deaths +49,498 +66,111
Natural population change rank 95/196 87/196
Natural population change rate +2.3% +0.3%
Population growth +2.23% -0.55%
Population growth rank 42/197 188/197
Age at first childbirth n/a 25.6 years
Average age at childbearing 29.4 years 29.7 years
Annual births per 1,000 women ages 15-19 78.1 14.1
Annual births per 1,000 women ages 20-29 164.4 94.7
Annual births per 1,000 women ages 30+ 58.1 20.9
Female of reproductive age (15-49), share of population 25.5% 25.1%
Any modern method of contraceptive prevalence among married women ages 15-49 20.2% 53.6%
Share of births attended by skilled health staff 53.8% 99.5%
Maternal mortality per live birth 0.51% 0.02%
Neonatal mortality rate (before reaching 28 days of age) 3.27% 0.41%
Infant mortality rate (before reaching 1 year of age) 4.31% 0.53%
Mortality rate before reaching 5 years of age 6.93% 0.61%
Life expectancy 64.6 years 78 years

Children 0-14 years as share of population

Guinea-Bissau
Factual

UN forecast
Sri Lanka
Factual

UN forecast
1x
Year Young
Guinea-Bissau Sri Lanka
2100 19.7% 13.1%
2099 19.8% 13.1%
2098 19.9% 13.2%
2097 20% 13.2%
2096 20.2% 13.2%
2095 20.3% 13.3%
2094 20.4% 13.3%
2093 20.5% 13.4%
2092 20.6% 13.4%
2091 20.8% 13.5%
2090 20.9% 13.6%
2089 21% 13.7%
2088 21.2% 13.7%
2087 21.3% 13.8%
2086 21.5% 13.9%
2085 21.6% 14%
2084 21.8% 14%
2083 21.9% 14.1%
2082 22.1% 14.2%
2081 22.2% 14.3%
2080 22.4% 14.3%
2079 22.6% 14.4%
2078 22.7% 14.5%
2077 22.9% 14.5%
2076 23.1% 14.6%
2075 23.3% 14.6%
2074 23.4% 14.7%
2073 23.6% 14.7%
2072 23.8% 14.8%
2071 24% 14.9%
2070 24.2% 14.9%
2069 24.4% 15%
2068 24.6% 15%
2067 24.8% 15.1%
2066 25.1% 15.2%
2065 25.3% 15.3%
2064 25.5% 15.4%
2063 25.7% 15.5%
2062 26% 15.6%
2061 26.2% 15.7%
2060 26.5% 15.8%
2059 26.7% 16%
2058 27% 16.1%
2057 27.3% 16.3%
2056 27.5% 16.4%
2055 27.8% 16.6%
2054 28.1% 16.8%
2053 28.4% 16.9%
2052 28.7% 17.1%
2051 29% 17.2%
2050 29.3% 17.4%
2049 29.6% 17.5%
2048 29.9% 17.7%
2047 30.2% 17.8%
2046 30.5% 17.9%
2045 30.9% 18%
2044 31.2% 18.2%
2043 31.5% 18.3%
2042 31.9% 18.4%
2041 32.2% 18.5%
2040 32.5% 18.6%
2039 32.9% 18.7%
2038 33.2% 18.9%
2037 33.6% 19%
2036 33.9% 19.1%
2035 34.3% 19.3%
2034 34.6% 19.5%
2033 35% 19.7%
2032 35.3% 19.9%
2031 35.7% 20.1%
2030 36.2% 20.3%
2029 36.6% 20.6%
2028 37.1% 20.9%
2027 37.6% 21.2%
2026 38.1% 21.5%
2025 38.6% 21.9%
2024 38.8% 22%
2023 39.2% 22.4%
2022 39.7% 22.7%
2021 40.1% 23%
2020 40.5% 23.3%
2019 40.9% 23.7%
2018 41.3% 24%
2017 41.7% 24.2%
2016 42% 24.5%
2015 42.2% 24.7%
2014 42.5% 24.9%
2013 42.7% 25%
2012 42.8% 25.2%
2011 43% 25.3%
2010 43.2% 25.4%
2009 43.3% 25.5%
2008 43.5% 25.6%
2007 43.6% 25.7%
2006 43.8% 25.7%
2005 43.9% 25.8%
2004 44% 26%
2003 44.2% 26.1%
2002 44.3% 26.3%
2001 44.5% 26.6%
2000 44.7% 27%
1999 44.8% 27.4%
1998 45% 27.8%
1997 45.1% 28.2%
1996 45.2% 28.6%
1995 45.3% 29.2%
1994 45.4% 29.9%
1993 45.4% 30.6%
1992 45.5% 31.4%
1991 45.5% 32.1%
1990 45.7% 32.5%
1989 45.8% 33%
1988 45.9% 33.5%
1987 45.9% 34%
1986 46% 34.6%
1985 45.9% 35.2%
1984 45.9% 35.5%
1983 45.7% 35.8%
1982 45.5% 36%
1981 45.3% 36.2%
1980 45% 36.4%
1979 45.1% 36.7%
1978 44.8% 36.9%
1977 43.7% 37.2%
1976 42.6% 37.6%
1975 41.8% 38%
1974 41.4% 38.4%
1973 41.6% 38.8%
1972 41.9% 39.2%
1971 41.9% 39.5%
1970 41.9% 39.7%
1969 41.9% 39.9%
1968 41.8% 40.1%
1967 42.1% 40.3%
1966 41.9% 40.4%
1965 41% 40.5%
1964 39.6% 40.6%
1963 38.4% 40.7%
1962 37.7% 40.8%
1961 37.1% 40.9%
1960 36.9% 41%

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/guinea-bissau/sri-lanka | CC BY

Children aged 0-14 make up 38.8% of the population in Guinea-Bissau and 22% in Sri Lanka in 2024, compared to 45.7% and 32.5% respectively in 1990.

Demographics of Guinea-Bissau and Sri Lanka compared.

Fertility rates around the globe

1x

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

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

Maternal mortality chart: Guinea-Bissau vs Sri Lanka

Guinea-Bissau
Sri Lanka
1x
Year Maternal mortality per 100K births
Guinea-Bissau Sri Lanka
2023 505 18
2022 539 22
2021 617 34
2020 603 23
2019 598 20
2018 585 21
2017 597 21
2016 617 22
2015 631 22
2014 662 23
2013 707 23
2012 704 24
2011 678 25
2010 698 26
2009 753 28
2008 802 30
2007 792 31
2006 831 32
2005 956 32
2004 980 37
2003 1,069 35
2002 1,141 36
2001 1,222 37
2000 1,295 39
1999 1,461 41
1998 1,465 43
1997 1,642 45
1996 1,539 47
1995 1,556 48
1994 1,644 49
1993 1,613 51
1992 1,633 54
1991 1,663 57
1990 1,709 59
1989 1,698 61
1988 1,759 62
1987 1,796 64
1986 1,825 66
1985 1,851 68

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

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

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 505 deaths per 100,000 live births in Guinea-Bissau, compared to 18 deaths in Sri Lanka.

Under-five mortality rates

Guinea-Bissau
Sri Lanka

Probability that a newborn baby will die before reaching age five

1x
Year Under 5 mortality rate
Guinea-Bissau Sri Lanka
2023 6.93% 0.61%
2022 7.16% 0.64%
2021 7.41% 0.66%
2020 7.66% 0.69%
2019 7.91% 0.72%
2018 8.21% 0.76%
2017 8.53% 0.79%
2016 8.84% 0.83%
2015 9.18% 0.87%
2014 9.53% 0.92%
2013 9.93% 0.98%
2012 10.4% 1.03%
2011 10.9% 1.08%
2010 11.4% 1.12%
2009 12% 2.08%
2008 12.6% 1.2%
2007 13.2% 1.26%
2006 13.9% 1.33%
2005 14.5% 1.4%
2004 15.1% 2.88%
2003 15.7% 1.52%
2002 16.3% 1.55%
2001 16.8% 1.58%
2000 17.4% 1.63%
1999 17.9% 1.69%
1998 18.4% 1.76%
1997 18.9% 1.86%
1996 19.4% 1.95%
1995 19.9% 2.05%
1994 20.4% 2.14%
1993 20.9% 2.22%
1992 21.3% 2.29%
1991 21.8% 2.32%
1990 22.2% 2.33%
1989 22.7% 2.74%
1988 23.1% 2.41%
1987 23.5% 2.54%
1986 24% 2.74%
1985 24.4% 3.02%
1984 - 3.35%
1983 - 3.67%
1982 - 3.98%
1981 - 4.29%
1980 - 4.63%
1979 - 4.99%
1978 - 5.38%
1977 - 5.77%
1976 - 6.12%
1975 - 6.41%
1974 - 6.62%
1973 - 6.77%
1972 - 6.86%
1971 - 6.94%
1970 - 7.02%
1969 - 7.14%
1968 - 7.32%
1967 - 7.55%
1966 - 7.81%
1965 - 8.07%
1964 - 8.3%
1963 - 8.48%
1962 - 8.66%
1961 - 8.95%
1960 - 9.41%

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

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

The chance that a newborn baby will die before reaching age five is 6.93% in Guinea-Bissau and 0.61% in Sri Lanka. 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. Central Intelligence Agency (CIA) (2025, retrieved 2026-02-20)

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