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Fertility & birth rates in Sri Lanka and Tanzania

Updated on by Georank team

Sri Lanka has an annual birth rate of 11.2 births per 1,000 people, compared to 35.2 for Tanzania. The average number of children a woman is expected to have during her lifetime — the fertility rate, is 1.97 in Sri Lanka and 4.61 in Tanzania — 133.3% difference.

1960 vs 2023, the fertility rate has decreased by 63.1% in Sri Lanka and by 29.5% in Tanzania — in 1960, it was 5.35 and 6.54, respectively.

  • Sri Lanka is ranked 125/196 by birth rate compared to 10/196 for Tanzania.
  • The mean age for first-time mothers is 25.6 years in Sri Lanka, compared to 19.9 years in Tanzania.
  • The mean age at childbearing (for all the births, not just the first) is 29.7 in Sri Lanka — it's 28.9 in Tanzania.
  • Annual births per 1,000 women ages 15-19 (adolescent birth rate or teenage mother rate) is 15.1 in Sri Lanka vs 113.2 in Tanzania.
  • In Sri Lanka, 25.1% of the population is composed of women of reproductive age (15-49), compared to 24.2% in Tanzania.

Fertility rate in Sri Lanka vs Tanzania by year

Sri Lanka
Tanzania
1x
Year Fertility rate
Sri Lanka Tanzania
2023 1.97 4.61
2022 1.98 4.67
2021 2 4.73
2020 2.01 4.8
2019 2.02 4.87
2018 2.03 4.93
2017 2.04 4.99
2016 2.06 5.01
2015 2.09 5.03
2014 2.13 5.12
2013 2.18 5.16
2012 2.17 5.14
2011 2.14 5.14
2010 2.13 5.23
2009 2.18 5.26
2008 2.23 5.32
2007 2.3 5.4
2006 2.29 5.51
2005 2.26 5.58
2004 2.27 5.6
2003 2.3 5.58
2002 2.31 5.57
2001 2.28 5.62
2000 2.21 5.67
1999 2.14 5.75
1998 2.14 5.81
1997 2.22 5.84
1996 2.29 5.83
1995 2.35 5.82
1994 2.4 5.89
1993 2.44 6
1992 2.49 6.08
1991 2.51 6.14
1990 2.54 6.2
1989 2.58 6.3
1988 2.57 6.38
1987 2.64 6.41
1986 2.74 6.49
1985 2.9 6.6
1984 3.01 6.72
1983 3.11 6.81
1982 3.32 6.87
1981 3.65 6.93
1980 3.73 6.99
1979 3.82 7.04
1978 3.81 7.06
1977 3.74 7.07
1976 3.78 7.09
1975 3.82 7.1
1974 3.86 7.12
1973 4 7.06
1972 4.16 7.05
1971 4.27 7.04
1970 4.39 7
1969 4.5 6.95
1968 4.66 6.9
1967 4.79 6.86
1966 4.83 6.8
1965 4.93 6.73
1964 5.06 6.68
1963 5.12 6.65
1962 5.18 6.61
1961 5.24 6.56
1960 5.35 6.54

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

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

According to the latest available data on birth rates, the fertility rate in Sri Lanka was 1.97 children per woman in 2023, compared to 4.61 in Tanzania in 2023. The replacement level is considered to be 2.1 children per woman.

Check Sri Lanka vs Tanzania population clock for a dynamic visualization of the changing population.

Natural population change by year

Sri Lanka
Tanzania
1x
Year Natural population change
Sri Lanka Tanzania
2023 66,111 1,960,623
2022 95,378 1,927,960
2021 121,858 1,880,137
2020 170,968 1,861,377
2019 172,243 1,816,669
2018 183,610 1,777,852
2017 187,993 1,726,909
2016 194,232 1,659,502
2015 201,815 1,592,882
2014 211,541 1,565,630
2013 221,021 1,509,008
2012 229,138 1,439,325
2011 224,461 1,384,886
2010 224,325 1,363,477
2009 200,175 1,332,015
2008 232,225 1,303,728
2007 248,287 1,278,285
2006 248,706 1,257,927
2005 248,683 1,224,165
2004 212,527 1,175,379
2003 252,008 1,118,435
2002 252,840 1,063,195
2001 244,377 1,026,242
2000 227,060 985,185
1999 206,876 948,659
1998 201,059 920,806
1997 208,193 882,544
1996 215,290 868,524
1995 221,957 838,980
1994 228,904 803,953
1993 226,257 778,044
1992 222,230 767,961
1991 218,117 762,011
1990 224,454 750,825
1989 212,401 743,854
1988 219,184 736,551
1987 226,414 718,580
1986 233,782 705,677
1985 247,836 697,867
1984 263,175 687,435
1983 277,768 679,720
1982 300,030 662,627
1981 328,096 645,496
1980 328,155 629,444
1979 329,791 613,388
1978 317,055 595,024
1977 300,038 574,938
1976 291,816 553,617
1975 282,496 533,906
1974 275,521 515,152
1973 278,577 488,429
1972 282,494 467,305
1971 281,200 449,014
1970 286,719 427,988
1969 286,218 408,322
1968 286,642 389,467
1967 284,738 374,763
1966 275,549 360,229
1965 272,422 343,456
1964 269,584 328,527
1963 262,880 314,644
1962 256,719 300,663
1961 251,087 286,839
1960 247,631 275,814

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

GeoRank.org/birth-rate/sri-lanka/tanzania | 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 +0.3% in Sri Lanka and +2.94% in Tanzania.

For the past 10 years, the annual natural population change has been +0.75% in Sri Lanka and +3.05% in Tanzania.

Birth rate in Sri Lanka vs Tanzania by year

Sri Lanka
Tanzania

Annual births per 1,000 people

1x
Year Annual births per 1,000 people
Sri Lanka Tanzania
2023 11.2 35.2
2022 12.4 35.6
2021 12.9 36
2020 13.8 36.4
2019 14.6 36.9
2018 15.2 37.3
2017 15.4 37.6
2016 15.7 37.6
2015 16 37.6
2014 16.5 38.4
2013 17 38.4
2012 17.1 38.1
2011 17.1 38.1
2010 17.1 38.8
2009 17.6 39.2
2008 18.2 39.6
2007 18.8 40.2
2006 18.9 41
2005 18.7 41.5
2004 18.8 41.5
2003 19.1 41.3
2002 19.2 41.2
2001 19 41.4
2000 18.4 41.5
1999 17.9 41.8
1998 17.8 42.1
1997 18.5 42.1
1996 19 42.3
1995 19.6 41.9
1994 20 41.5
1993 20 41.7
1992 20.1 42.3
1991 20.2 42.7
1990 20.5 43
1989 20.6 43.5
1988 20.3 44
1987 20.8 44.3
1986 21.4 44.9
1985 22.4 45.7
1984 23.5 46.4
1983 24.4 47.1
1982 26 47.5
1981 28.1 47.9
1980 28.6 48.3
1979 29.3 48.8
1978 29 49.2
1977 28.3 49.5
1976 28.3 49.8
1975 28.2 50.2
1974 28.2 50.6
1973 28.9 50.3
1972 29.7 50.4
1971 30.2 50.6
1970 31.2 50.4
1969 31.8 50.3
1968 32.6 50.2
1967 33.2 50.3
1966 33.2 50.2
1965 33.8 49.9
1964 34.5 49.8
1963 34.7 49.7
1962 35.1 49.4
1961 35.6 49.1
1960 36.3 49

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

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

The latest reported birth rate per 1,000 people in 2023 was 11.2 in Sri Lanka and 35.2 in Tanzania, compared with 36.3 and 49, respectively, in 1960.

Birth rate data compared

Sri Lanka Tanzania
Fertility rate 1.97 4.61
Fertility rate rank 101/196 12/196
Birth rate 11.2 35.2
Birth rate rank 125/196 10/196
Population change due to births and deaths +66,111 +1,960,623
Natural population change rank 87/196 8/196
Natural population change rate +0.3% +2.94%
Population growth -0.55% +2.92%
Population growth rank 188/197 18/197
Age at first childbirth 25.6 years 19.9 years
Average age at childbearing 29.7 years 28.9 years
Annual births per 1,000 women ages 15-19 14.1 111.5
Annual births per 1,000 women ages 20-29 94.7 199.8
Annual births per 1,000 women ages 30+ 20.9 71.3
Female of reproductive age (15-49), share of population 25.1% 24.2%
Any modern method of contraceptive prevalence among married women ages 15-49 53.6% 31.1%
Share of births attended by skilled health staff 99.5% 63.5%
Maternal mortality per live birth 0.02% 0.28%
Neonatal mortality rate (before reaching 28 days of age) 0.41% 2.06%
Infant mortality rate (before reaching 1 year of age) 0.53% 2.99%
Mortality rate before reaching 5 years of age 0.61% 3.89%
Life expectancy 78 years 67.6 years

Children 0-14 years as share of population

Sri Lanka
Factual

UN forecast
Tanzania
Factual

UN forecast
1x
Year Young
Sri Lanka Tanzania
2100 13.1% 23.4%
2099 13.1% 23.6%
2098 13.2% 23.8%
2097 13.2% 23.9%
2096 13.2% 24.1%
2095 13.3% 24.3%
2094 13.3% 24.5%
2093 13.4% 24.7%
2092 13.4% 24.8%
2091 13.5% 25%
2090 13.6% 25.2%
2089 13.7% 25.4%
2088 13.7% 25.6%
2087 13.8% 25.8%
2086 13.9% 26%
2085 14% 26.2%
2084 14% 26.4%
2083 14.1% 26.6%
2082 14.2% 26.8%
2081 14.3% 27.1%
2080 14.3% 27.3%
2079 14.4% 27.5%
2078 14.5% 27.7%
2077 14.5% 28%
2076 14.6% 28.2%
2075 14.6% 28.4%
2074 14.7% 28.7%
2073 14.7% 28.9%
2072 14.8% 29.1%
2071 14.9% 29.4%
2070 14.9% 29.6%
2069 15% 29.8%
2068 15% 30.1%
2067 15.1% 30.3%
2066 15.2% 30.6%
2065 15.3% 30.8%
2064 15.4% 31.1%
2063 15.5% 31.3%
2062 15.6% 31.6%
2061 15.7% 31.9%
2060 15.8% 32.1%
2059 16% 32.4%
2058 16.1% 32.7%
2057 16.3% 32.9%
2056 16.4% 33.2%
2055 16.6% 33.5%
2054 16.8% 33.8%
2053 16.9% 34.1%
2052 17.1% 34.3%
2051 17.2% 34.6%
2050 17.4% 34.9%
2049 17.5% 35.2%
2048 17.7% 35.5%
2047 17.8% 35.8%
2046 17.9% 36.1%
2045 18% 36.4%
2044 18.2% 36.7%
2043 18.3% 37%
2042 18.4% 37.3%
2041 18.5% 37.6%
2040 18.6% 37.9%
2039 18.7% 38.3%
2038 18.9% 38.6%
2037 19% 39%
2036 19.1% 39.3%
2035 19.3% 39.6%
2034 19.5% 40%
2033 19.7% 40.3%
2032 19.9% 40.7%
2031 20.1% 41%
2030 20.3% 41.3%
2029 20.6% 41.6%
2028 20.9% 41.8%
2027 21.2% 42.1%
2026 21.5% 42.2%
2025 21.9% 42.4%
2024 22% 42.5%
2023 22.4% 42.7%
2022 22.7% 42.9%
2021 23% 43.1%
2020 23.3% 43.4%
2019 23.7% 43.6%
2018 24% 43.8%
2017 24.2% 44%
2016 24.5% 44.2%
2015 24.7% 44.5%
2014 24.9% 44.8%
2013 25% 44.9%
2012 25.2% 45.1%
2011 25.3% 45.2%
2010 25.4% 45.3%
2009 25.5% 45.3%
2008 25.6% 45.1%
2007 25.7% 45%
2006 25.7% 44.9%
2005 25.8% 44.8%
2004 26% 44.7%
2003 26.1% 44.6%
2002 26.3% 44.6%
2001 26.6% 44.5%
2000 27% 44.6%
1999 27.4% 44.7%
1998 27.8% 44.7%
1997 28.2% 44.8%
1996 28.6% 44.7%
1995 29.2% 44.5%
1994 29.9% 44.9%
1993 30.6% 45.5%
1992 31.4% 46%
1991 32.1% 46.2%
1990 32.5% 46.3%
1989 33% 46.5%
1988 33.5% 46.7%
1987 34% 46.9%
1986 34.6% 47.2%
1985 35.2% 47.4%
1984 35.5% 47.5%
1983 35.8% 47.6%
1982 36% 47.5%
1981 36.2% 47.4%
1980 36.4% 47.2%
1979 36.7% 46.9%
1978 36.9% 46.7%
1977 37.2% 46.6%
1976 37.6% 46.5%
1975 38% 46.4%
1974 38.4% 46.3%
1973 38.8% 46.2%
1972 39.2% 46.1%
1971 39.5% 46.1%
1970 39.7% 46%
1969 39.9% 45.9%
1968 40.1% 45.8%
1967 40.3% 45.6%
1966 40.4% 45.4%
1965 40.5% 45.2%
1964 40.6% 45%
1963 40.7% 44.8%
1962 40.8% 44.8%
1961 40.9% 44.8%
1960 41% 44.9%

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/sri-lanka/tanzania | CC BY

Children aged 0-14 make up 22% of the population in Sri Lanka and 42.5% in Tanzania in 2024, compared to 32.5% and 46.3% respectively in 1990.

Demographics of Sri Lanka and Tanzania compared.

Fertility rates around the globe

1x

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

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

Maternal mortality chart: Sri Lanka vs Tanzania

Sri Lanka
Tanzania
1x
Year Maternal mortality per 100K births
Sri Lanka Tanzania
2023 18 276
2022 22 152
2021 34 162
2020 23 160
2019 20 292
2018 21 319
2017 21 345
2016 22 396
2015 22 433
2014 23 454
2013 23 479
2012 24 448
2011 25 475
2010 26 486
2009 28 502
2008 30 511
2007 31 453
2006 32 366
2005 32 350
2004 37 365
2003 35 397
2002 36 454
2001 37 493
2000 39 568
1999 41 635
1998 43 739
1997 45 777
1996 47 775
1995 48 797
1994 49 816
1993 51 851
1992 54 864
1991 57 873
1990 59 900
1989 61 927
1988 62 949
1987 64 964
1986 66 971
1985 68 980

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

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

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 18 deaths per 100,000 live births in Sri Lanka, compared to 276 deaths in Tanzania.

Under-five mortality rates

Sri Lanka
Tanzania

Probability that a newborn baby will die before reaching age five

1x
Year Under 5 mortality rate
Sri Lanka Tanzania
2023 0.61% 3.89%
2022 0.64% 4.05%
2021 0.66% 4.22%
2020 0.69% 4.42%
2019 0.72% 4.6%
2018 0.76% 4.8%
2017 0.79% 5.02%
2016 0.83% 5.25%
2015 0.87% 5.48%
2014 0.92% 5.67%
2013 0.98% 5.95%
2012 1.03% 6.21%
2011 1.08% 6.5%
2010 1.12% 6.86%
2009 2.08% 7.24%
2008 1.2% 7.7%
2007 1.26% 8.16%
2006 1.33% 8.69%
2005 1.4% 9.24%
2004 2.88% 9.86%
2003 1.52% 10.5%
2002 1.55% 11.3%
2001 1.58% 12.1%
2000 1.63% 12.8%
1999 1.69% 13.6%
1998 1.76% 14.2%
1997 1.86% 14.8%
1996 1.95% 15.2%
1995 2.05% 15.6%
1994 2.14% 15.9%
1993 2.22% 16.1%
1992 2.29% 16.3%
1991 2.32% 16.5%
1990 2.33% 16.7%
1989 2.74% 16.9%
1988 2.41% 17.2%
1987 2.54% 17.4%
1986 2.74% 17.6%
1985 3.02% 17.7%
1984 3.35% 17.8%
1983 3.67% 17.8%
1982 3.98% 17.8%
1981 4.29% 17.8%
1980 4.63% 17.9%
1979 4.99% 18.1%
1978 5.38% 18.4%
1977 5.77% 18.8%
1976 6.12% 19.2%
1975 6.41% 19.6%
1974 6.62% 20.1%
1973 6.77% 20.5%
1972 6.86% 20.9%
1971 6.94% 21.2%
1970 7.02% 21.6%
1969 7.14% 21.9%
1968 7.32% 22.2%
1967 7.55% 22.5%
1966 7.81% 22.8%
1965 8.07% 23.1%
1964 8.3% 23.4%
1963 8.48% 23.6%
1962 8.66% 23.8%
1961 8.95% 24%
1960 9.41% 24.2%

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

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

The chance that a newborn baby will die before reaching age five is 0.61% in Sri Lanka and 3.89% in Tanzania. 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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