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Fertility & birth rates in Kiribati and United States

Updated on by Georank team

Kiribati has an annual birth rate of 25.8 births per 1,000 people, compared to 10.7 for the United States. The average number of children a woman is expected to have during her lifetime — the fertility rate, is 3.15 in Kiribati and 1.62 in the United States — 48.6% difference.

1960 vs 2023, the fertility rate has decreased by 51.1% in Kiribati and by 55.8% in the United States — in 1960, it was 6.44 and 3.65, respectively.

  • Kiribati is ranked 50/196 by birth rate compared to 140/196 for the United States.
  • The mean age for first-time mothers is 23.1 years in Kiribati, compared to 27.3 years in the United States.
  • The mean age at childbearing (for all the births, not just the first) is 29 in Kiribati — it's 30.2 in the United States.
  • Annual births per 1,000 women ages 15-19 (adolescent birth rate or teenage mother rate) is 44 in Kiribati vs 13.1 in the United States.
  • In Kiribati, 26% of the population is composed of women of reproductive age (15-49), compared to 22.5% in the United States.

Fertility rate in Kiribati vs United States by year

Kiribati
United States
1x
Year Fertility rate
Kiribati United States
2023 3.15 1.62
2022 3.18 1.66
2021 3.22 1.66
2020 3.25 1.64
2019 3.29 1.71
2018 3.32 1.73
2017 3.34 1.77
2016 3.38 1.82
2015 3.44 1.84
2014 3.52 1.86
2013 3.64 1.86
2012 3.77 1.88
2011 3.88 1.89
2010 3.9 1.93
2009 3.91 2
2008 3.9 2.07
2007 3.87 2.12
2006 3.82 2.11
2005 3.76 2.06
2004 3.73 2.05
2003 3.7 2.05
2002 3.81 2.02
2001 3.96 2.03
2000 4.07 2.06
1999 4.18 2.01
1998 4.29 2
1997 4.37 1.97
1996 4.43 1.98
1995 4.42 1.98
1994 4.44 2
1993 4.49 2.02
1992 4.57 2.05
1991 4.64 2.06
1990 4.67 2.08
1989 4.69 2.01
1988 4.73 1.93
1987 4.81 1.87
1986 4.87 1.84
1985 4.91 1.84
1984 4.91 1.81
1983 4.91 1.8
1982 4.95 1.83
1981 4.96 1.81
1980 4.96 1.84
1979 4.97 1.81
1978 4.97 1.76
1977 4.96 1.79
1976 4.96 1.74
1975 5.02 1.77
1974 5.09 1.84
1973 5.2 1.88
1972 5.37 2.01
1971 5.55 2.27
1970 5.71 2.48
1969 5.85 2.46
1968 5.98 2.46
1967 6.11 2.56
1966 6.23 2.72
1965 6.26 2.91
1964 6.29 3.19
1963 6.35 3.32
1962 6.42 3.46
1961 6.48 3.62
1960 6.44 3.65

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

GeoRank.org/birth-rate/kiribati/united-states | CC BY

According to the latest available data on birth rates, the fertility rate in Kiribati was 3.15 children per woman in 2023, compared to 1.62 in the United States in 2023. The replacement level is considered to be 2.1 children per woman.

Check Kiribati vs the United States population clock for a dynamic visualization of the changing population.

Natural population change by year

Kiribati
United States
1x
Year Natural population change
Kiribati United States
2023 2,487 502,372
2022 2,522 399,926
2021 2,408 199,137
2020 2,497 208,862
2019 2,560 887,476
2018 2,561 955,022
2017 2,549 1,028,037
2016 2,546 1,197,627
2015 2,555 1,270,126
2014 2,577 1,357,281
2013 2,629 1,322,711
2012 2,678 1,411,822
2011 2,709 1,441,697
2010 2,644 1,548,182
2009 2,573 1,717,920
2008 2,493 1,794,154
2007 2,393 1,897,757
2006 2,285 1,849,955
2005 2,188 1,684,445
2004 2,118 1,698,271
2003 2,045 1,653,615
2002 2,074 1,581,938
2001 2,121 1,595,826
2000 2,153 1,664,758
1999 2,186 1,564,050
1998 2,210 1,573,857
1997 2,220 1,501,014
1996 2,217 1,510,137
1995 2,183 1,546,031
1994 2,168 1,633,302
1993 2,161 1,717,685
1992 2,173 1,875,328
1991 2,176 1,926,543
1990 2,127 2,026,068
1989 2,073 1,875,826
1988 2,022 1,735,943
1987 1,982 1,720,252
1986 1,933 1,656,917
1985 1,881 1,689,258
1984 1,813 1,627,192
1983 1,748 1,636,544
1982 1,697 1,714,317
1981 1,635 1,652,153
1980 1,571 1,608,450
1979 1,509 1,597,894
1978 1,480 1,402,283
1977 1,426 1,431,556
1976 1,425 1,264,604
1975 1,423 1,252,644
1974 1,430 1,218,968
1973 1,409 1,165,499
1972 1,406 1,301,355
1971 1,406 1,640,519
1970 1,388 1,824,965
1969 1,367 1,702,487
1968 1,393 1,565,507
1967 1,417 1,669,181
1966 1,437 1,749,387
1965 1,376 1,943,030
1964 1,318 2,245,099
1963 1,273 2,289,826
1962 1,233 2,406,337
1961 1,199 2,571,681
1960 1,141 2,565,530

Data sources: World Bank | Health (1960–2023, retrieved 2026-04-06); U.S. Census Bureau (1960–2023, retrieved 2026-02-08).

GeoRank.org/birth-rate/kiribati/united-states | 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 +1.88% in Kiribati and +0.15% in the United States.

For the past 10 years, the annual natural population change has been +2.05% in Kiribati and +0.25% in the United States.

Birth rate in Kiribati vs United States by year

Kiribati
United States

Annual births per 1,000 people

1x
Year Annual births per 1,000 people
Kiribati United States
2023 25.8 10.7
2022 26.4 11
2021 26.9 11
2020 27.4 10.9
2019 27.8 11.4
2018 28.1 11.6
2017 28.3 11.8
2016 28.5 12.2
2015 28.9 12.4
2014 29.3 12.5
2013 30 12.4
2012 30.8 12.6
2011 31.4 12.7
2010 31.2 13
2009 31.1 13.5
2008 30.8 14
2007 30.3 14.3
2006 29.7 14.3
2005 29.2 14
2004 28.9 14
2003 28.6 14.1
2002 29.4 14
2001 30.5 14.1
2000 31.5 14.4
1999 32.5 14.2
1998 33.4 14.3
1997 34.1 14.2
1996 34.8 14.4
1995 35 14.6
1994 35.4 15
1993 35.9 15.4
1992 36.8 15.8
1991 37.6 16.2
1990 37.7 16.7
1989 37.9 16.4
1988 38.2 16
1987 38.6 15.7
1986 38.8 15.6
1985 38.9 15.8
1984 38.6 15.6
1983 38.1 15.6
1982 37.9 15.9
1981 37.4 15.8
1980 36.8 15.9
1979 36.2 15.6
1978 36.2 15
1977 35.7 15.1
1976 35.4 14.6
1975 35.4 14.6
1974 35.7 14.8
1973 35.7 14.8
1972 36.5 15.6
1971 37.4 17.2
1970 38.1 18.4
1969 38.7 17.9
1968 40.1 17.6
1967 41.2 17.8
1966 42.2 18.4
1965 42 19.4
1964 42.2 21.1
1963 42.6 21.7
1962 43.1 22.4
1961 43.6 23.3
1960 43.5 23.7

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

GeoRank.org/birth-rate/kiribati/united-states | CC BY

The latest reported birth rate per 1,000 people in 2023 was 25.8 in Kiribati and 10.7 in the United States, compared with 43.5 and 23.7, respectively, in 1960.

Birth rate data compared

Kiribati United States
Fertility rate 3.15 1.62
Fertility rate rank 53/196 125/196
Birth rate 25.8 10.7
Birth rate rank 50/196 140/196
Population change due to births and deaths +2,487 +502,372
Natural population change rank 135/196 37/196
Natural population change rate +1.88% +0.15%
Population growth +1.5% +0.49%
Population growth rank 72/197 134/197
Age at first childbirth 23.1 years 27.3 years
Average age at childbearing 29 years 30.2 years
Annual births per 1,000 women ages 15-19 45.3 11.3
Annual births per 1,000 women ages 20-29 152.8 72.5
Annual births per 1,000 women ages 30+ 45.7 17.4
Female of reproductive age (15-49), share of population 26% 22.5%
Any modern method of contraceptive prevalence among married women ages 15-49 27.3% 66.1%
Share of births attended by skilled health staff 91.9% 99.1%
Maternal mortality per live birth 0.08% 0.02%
Neonatal mortality rate (before reaching 28 days of age) 2.24% 0.34%
Infant mortality rate (before reaching 1 year of age) 3.97% 0.55%
Mortality rate before reaching 5 years of age 5.51% 0.65%
Life expectancy 66.9 years 79.8 years

Children 0-14 years as share of population

Kiribati
Factual

UN forecast
United States
Factual

UN forecast
1x
Year Young
Kiribati United States
2100 19.5% 14.4%
2099 19.6% 14.4%
2098 19.7% 14.4%
2097 19.8% 14.4%
2096 20% 14.4%
2095 20.1% 14.5%
2094 20.2% 14.5%
2093 20.3% 14.5%
2092 20.5% 14.5%
2091 20.6% 14.6%
2090 20.7% 14.6%
2089 20.9% 14.7%
2088 21% 14.7%
2087 21.2% 14.7%
2086 21.3% 14.8%
2085 21.4% 14.8%
2084 21.6% 14.8%
2083 21.7% 14.9%
2082 21.8% 14.9%
2081 22% 14.9%
2080 22.1% 14.9%
2079 22.2% 14.9%
2078 22.3% 14.9%
2077 22.5% 14.9%
2076 22.6% 14.9%
2075 22.7% 14.9%
2074 22.9% 14.9%
2073 23% 14.9%
2072 23.1% 14.9%
2071 23.3% 14.9%
2070 23.4% 14.9%
2069 23.6% 14.9%
2068 23.8% 14.9%
2067 23.9% 14.9%
2066 24.1% 14.9%
2065 24.3% 15%
2064 24.5% 15%
2063 24.7% 15%
2062 25% 15.1%
2061 25.2% 15.1%
2060 25.4% 15.2%
2059 25.6% 15.3%
2058 25.8% 15.4%
2057 26.1% 15.5%
2056 26.3% 15.5%
2055 26.5% 15.6%
2054 26.7% 15.7%
2053 26.9% 15.8%
2052 27.1% 15.8%
2051 27.3% 15.9%
2050 27.5% 15.9%
2049 27.7% 16%
2048 27.9% 16%
2047 28% 16%
2046 28.2% 16%
2045 28.4% 16%
2044 28.5% 16%
2043 28.7% 16%
2042 28.9% 16%
2041 29.1% 15.9%
2040 29.3% 15.9%
2039 29.5% 15.9%
2038 29.8% 15.9%
2037 30.1% 15.9%
2036 30.4% 15.9%
2035 30.8% 15.9%
2034 31.1% 15.9%
2033 31.5% 16%
2032 31.8% 16.1%
2031 32.2% 16.2%
2030 32.6% 16.3%
2029 32.9% 16.5%
2028 33.3% 16.6%
2027 33.7% 16.8%
2026 34.2% 17%
2025 34.6% 17.2%
2024 34.7% 17.3%
2023 34.9% 17.6%
2022 35.1% 17.9%
2021 35.2% 18.1%
2020 35.2% 18.4%
2019 35.1% 18.6%
2018 35.1% 18.8%
2017 35% 18.9%
2016 35% 19.1%
2015 35.2% 19.2%
2014 35.4% 19.3%
2013 35.7% 19.4%
2012 36.1% 19.5%
2011 36.4% 19.6%
2010 36.6% 19.7%
2009 36.8% 19.8%
2008 37% 19.9%
2007 37.3% 20%
2006 37.6% 20.2%
2005 38% 20.3%
2004 38.4% 20.5%
2003 38.9% 20.7%
2002 39.3% 20.9%
2001 39.8% 21%
2000 40.1% 21.2%
1999 40.5% 21.3%
1998 40.8% 21.4%
1997 41% 21.5%
1996 41.1% 21.7%
1995 41.2% 21.8%
1994 41.2% 21.9%
1993 41% 21.9%
1992 40.8% 21.8%
1991 40.5% 21.7%
1990 40.2% 21.6%
1989 39.9% 21.5%
1988 39.7% 21.3%
1987 39.4% 21.3%
1986 39.2% 21.3%
1985 39.2% 21.5%
1984 39.2% 21.7%
1983 39.5% 21.8%
1982 39.9% 22%
1981 40.5% 22.1%
1980 41.1% 22.4%
1979 41.8% 22.8%
1978 42.3% 23.2%
1977 42.8% 23.8%
1976 43.2% 24.4%
1975 43.7% 25.2%
1974 44.2% 25.9%
1973 44.6% 26.6%
1972 44.8% 27.4%
1971 44.8% 28%
1970 44.9% 28.6%
1969 45% 29%
1968 44.9% 29.5%
1967 44.5% 30%
1966 44.1% 30.4%
1965 43.9% 30.7%
1964 44% 30.9%
1963 44% 31.1%
1962 43.8% 31.3%
1961 43.5% 31.4%
1960 43.2% 31.3%

Data sources: World Bank | Health (1960–2024, retrieved 2026-04-06); United Nations | World Population Prospects (2025–2100, retrieved 2026-03-10); U.S. Census Bureau (1960–2024, retrieved 2026-02-08).

GeoRank.org/birth-rate/kiribati/united-states | CC BY

Children aged 0-14 make up 34.7% of the population in Kiribati and 17.3% in the United States in 2024, compared to 40.2% and 21.6% respectively in 1990.

Demographics of Kiribati and the United States compared.

Fertility rates around the globe

1x

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

GeoRank.org/birth-rate/kiribati/united-states | CC BY

Maternal mortality chart: Kiribati vs United States

Kiribati
United States
1x
Year Maternal mortality per 100K births
Kiribati United States
2023 80 17
2022 86 20
2021 122 31
2020 89 22
2019 89 18
2018 87 18
2017 90 18
2016 88 18
2015 90 17
2014 91 17
2013 93 16
2012 98 16
2011 98 15
2010 102 15
2009 99 15
2008 100 14
2007 101 13
2006 102 13
2005 104 13
2004 106 13
2003 105 13
2002 109 13
2001 113 13
2000 119 12
1999 121 12
1998 126 11
1997 132 11
1996 141 11
1995 148 12
1994 150 11
1993 162 12
1992 175 11
1991 188 12
1990 199 12
1989 212 12
1988 220 12
1987 231 11
1986 232 11
1985 246 11

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

GeoRank.org/birth-rate/kiribati/united-states | CC BY

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 80 deaths per 100,000 live births in Kiribati, compared to 17 deaths in the United States.

U.S. figures are less comparable to other countries, because reporting changes between 2003 and 2018 doubled the number of maternal deaths captured in official records without an actual doubling in mortality, and coding was revised again in 2018.

Under-five mortality rates

Kiribati
United States

Probability that a newborn baby will die before reaching age five

1x
Year Under 5 mortality rate
Kiribati United States
2023 5.51% 0.65%
2022 5.65% 0.65%
2021 5.76% 0.65%
2020 5.86% 0.65%
2019 5.93% 0.65%
2018 5.98% 0.65%
2017 5.99% 0.66%
2016 5.95% 0.67%
2015 5.89% 0.68%
2014 5.84% 0.68%
2013 5.8% 0.69%
2012 5.78% 0.7%
2011 5.79% 0.72%
2010 5.82% 0.73%
2009 5.87% 0.75%
2008 5.93% 0.76%
2007 5.99% 0.77%
2006 6.03% 0.79%
2005 6.07% 0.8%
2004 6.13% 0.81%
2003 6.2% 0.81%
2002 6.31% 0.82%
2001 6.46% 0.83%
2000 6.64% 0.84%
1999 6.83% 0.86%
1998 7.02% 0.87%
1997 7.22% 0.89%
1996 7.42% 0.92%
1995 7.64% 0.95%
1994 7.87% 0.98%
1993 8.13% 1.01%
1992 8.44% 1.05%
1991 8.77% 1.09%
1990 9.13% 1.12%
1989 9.5% 1.16%
1988 9.87% 1.19%
1987 10.2% 1.21%
1986 10.6% 1.24%
1985 10.9% 1.27%
1984 11.1% 1.3%
1983 11.4% 1.34%
1982 11.6% 1.39%
1981 11.7% 1.44%
1980 11.9% 1.5%
1979 12% 1.56%
1978 12.2% 1.63%
1977 12.3% 1.71%
1976 12.4% 1.79%
1975 12.5% 1.88%
1974 12.7% 1.97%
1973 13% 2.06%
1972 13.3% 2.15%
1971 13.7% 2.24%
1970 14.1% 2.32%
1969 14.6% 2.41%
1968 15.2% 2.49%
1967 15.8% 2.57%
1966 16.4% 2.64%
1965 17.1% 2.71%
1964 17.7% 2.77%
1963 18.3% 2.83%
1962 18.9% 2.89%
1961 19.5% 2.95%
1960 19.9% 3.01%

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

GeoRank.org/birth-rate/kiribati/united-states | CC BY

The chance that a newborn baby will die before reaching age five is 5.51% in Kiribati and 0.65% in the United States. 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. U.S. Census Bureau (1960–2025, retrieved 2026-02-08)
  4. United Nations Economic Commission for Europe (UNECE) (2021, retrieved 2026-03-10)
  5. Central Intelligence Agency (CIA) (2025, retrieved 2026-02-20)

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