Fertility & birth rates in Kiribati and Tonga

Fertility rate in Kiribati vs Tonga by year

Chart Table

Kiribati

Tonga

1x

Year	Fertility rate
	Kiribati	Tonga
2023	3.15	3.13
2022	3.18	3.17
2021	3.22	3.2
2020	3.25	3.23
2019	3.29	3.27
2018	3.32	3.33
2017	3.34	3.39
2016	3.38	3.46
2015	3.44	3.54
2014	3.52	3.62
2013	3.64	3.7
2012	3.77	3.77
2011	3.88	3.83
2010	3.9	3.88
2009	3.91	3.95
2008	3.9	4.01
2007	3.87	4.09
2006	3.82	4.14
2005	3.76	4.2
2004	3.73	4.19
2003	3.7	4.18
2002	3.81	4.14
2001	3.96	4.13
2000	4.07	4.16
1999	4.18	4.23
1998	4.29	4.31
1997	4.37	4.38
1996	4.43	4.46
1995	4.42	4.56
1994	4.44	4.66
1993	4.49	4.73
1992	4.57	4.79
1991	4.64	4.85
1990	4.67	4.93
1989	4.69	5.01
1988	4.73	5.1
1987	4.81	5.19
1986	4.87	5.27
1985	4.91	5.34
1984	4.91	5.41
1983	4.91	5.45
1982	4.95	5.5
1981	4.96	5.55
1980	4.96	5.6
1979	4.97	5.65
1978	4.97	5.68
1977	4.96	5.7
1976	4.96	5.73
1975	5.02	5.75
1974	5.09	5.77
1973	5.2	5.8
1972	5.37	5.86
1971	5.55	5.96
1970	5.71	6.07
1969	5.85	6.17
1968	5.98	6.23
1967	6.11	6.29
1966	6.23	6.35
1965	6.26	6.41
1964	6.29	6.46
1963	6.35	6.52
1962	6.42	6.57
1961	6.48	6.61
1960	6.44	6.65

According to the latest available data on birth rates, the fertility rate in Kiribati was 3.15 children per woman in 2023, compared to 3.13 in Tonga in 2023. The replacement level is considered to be 2.1 children per woman.

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

Natural population change by year

Chart Table

Kiribati

Tonga

1x

Year	Natural population change
	Kiribati	Tonga
2023	2,487	1,744
2022	2,522	1,772
2021	2,408	1,773
2020	2,497	1,816
2019	2,560	1,841
2018	2,561	1,873
2017	2,549	1,912
2016	2,546	1,989
2015	2,555	2,064
2014	2,577	2,135
2013	2,629	2,199
2012	2,678	2,255
2011	2,709	2,298
2010	2,644	2,332
2009	2,573	2,358
2008	2,493	2,397
2007	2,393	2,423
2006	2,285	2,459
2005	2,188	2,495
2004	2,118	2,478
2003	2,045	2,448
2002	2,074	2,396
2001	2,121	2,358
2000	2,153	2,346
1999	2,186	2,352
1998	2,210	2,344
1997	2,220	2,332
1996	2,217	2,393
1995	2,183	2,476
1994	2,168	2,547
1993	2,161	2,594
1992	2,173	2,622
1991	2,176	2,637
1990	2,127	2,641
1989	2,073	2,644
1988	2,022	2,649
1987	1,982	2,646
1986	1,933	2,704
1985	1,881	2,762
1984	1,813	2,814
1983	1,748	2,840
1982	1,697	2,853
1981	1,635	2,882
1980	1,571	2,885
1979	1,509	2,884
1978	1,480	2,862
1977	1,426	2,822
1976	1,425	2,769
1975	1,423	2,709
1974	1,430	2,650
1973	1,409	2,617
1972	1,406	2,605
1971	1,406	2,611
1970	1,388	2,628
1969	1,367	2,632
1968	1,393	2,614
1967	1,417	2,603
1966	1,437	2,550
1965	1,376	2,498
1964	1,318	2,445
1963	1,273	2,394
1962	1,233	2,343
1961	1,199	2,284
1960	1,141	2,230

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 +1.67% in Tonga.

For the past 10 years, the annual natural population change has been +2.05% in Kiribati and +1.79% in Tonga.

Birth rate in Kiribati vs Tonga by year

Chart Table

Kiribati

Tonga

Annual births per 1,000 people

1x

Year	Annual births per 1,000 people
	Kiribati	Tonga
2023	25.8	23.1
2022	26.4	23.4
2021	26.9	23.5
2020	27.4	23.6
2019	27.8	23.8
2018	28.1	24.1
2017	28.3	24.5
2016	28.5	25.2
2015	28.9	25.8
2014	29.3	26.4
2013	30	26.9
2012	30.8	27.3
2011	31.4	27.7
2010	31.2	28
2009	31.1	28.4
2008	30.8	28.7
2007	30.3	29
2006	29.7	29.5
2005	29.2	30
2004	28.9	30
2003	28.6	29.9
2002	29.4	29.5
2001	30.5	29.4
2000	31.5	29.4
1999	32.5	29.6
1998	33.4	29.7
1997	34.1	29.8
1996	34.8	30.6
1995	35	31.4
1994	35.4	32.2
1993	35.9	32.7
1992	36.8	33
1991	37.6	33.2
1990	37.7	33.3
1989	37.9	33.4
1988	38.2	33.5
1987	38.6	33.7
1986	38.8	34.4
1985	38.9	34.9
1984	38.6	35.4
1983	38.1	35.6
1982	37.9	35.8
1981	37.4	36
1980	36.8	36.1
1979	36.2	36.1
1978	36.2	36
1977	35.7	35.7
1976	35.4	35.6
1975	35.4	35.8
1974	35.7	36
1973	35.7	36.5
1972	36.5	37
1971	37.4	37.8
1970	38.1	38.8
1969	38.7	39.6
1968	40.1	40.3
1967	41.2	41
1966	42.2	41.4
1965	42	41.9
1964	42.2	42.4
1963	42.6	42.9
1962	43.1	43.4
1961	43.6	43.9
1960	43.5	44.3

The latest reported birth rate per 1,000 people in 2023 was 25.8 in Kiribati and 23.1 in Tonga, compared with 43.5 and 44.3, respectively, in 1960.

Children 0-14 years as share of population

Chart Table

Kiribati

Factual

UN forecast

Tonga

Factual

UN forecast

1x

Year	Young
	Kiribati	Tonga
2100	19.5%	17.5%
2099	19.6%	17.6%
2098	19.7%	17.7%
2097	19.8%	17.7%
2096	20%	17.9%
2095	20.1%	18%
2094	20.2%	18.1%
2093	20.3%	18.3%
2092	20.5%	18.4%
2091	20.6%	18.6%
2090	20.7%	18.8%
2089	20.9%	19%
2088	21%	19.3%
2087	21.2%	19.5%
2086	21.3%	19.7%
2085	21.4%	20%
2084	21.6%	20.2%
2083	21.7%	20.4%
2082	21.8%	20.7%
2081	22%	20.9%
2080	22.1%	21.1%
2079	22.2%	21.3%
2078	22.3%	21.5%
2077	22.5%	21.7%
2076	22.6%	21.9%
2075	22.7%	22%
2074	22.9%	22.2%
2073	23%	22.3%
2072	23.1%	22.4%
2071	23.3%	22.6%
2070	23.4%	22.7%
2069	23.6%	22.8%
2068	23.8%	23%
2067	23.9%	23.2%
2066	24.1%	23.4%
2065	24.3%	23.6%
2064	24.5%	23.8%
2063	24.7%	24.1%
2062	25%	24.4%
2061	25.2%	24.7%
2060	25.4%	25%
2059	25.6%	25.4%
2058	25.8%	25.8%
2057	26.1%	26.2%
2056	26.3%	26.6%
2055	26.5%	27%
2054	26.7%	27.4%
2053	26.9%	27.8%
2052	27.1%	28.2%
2051	27.3%	28.5%
2050	27.5%	28.9%
2049	27.7%	29.1%
2048	27.9%	29.4%
2047	28%	29.6%
2046	28.2%	29.7%
2045	28.4%	29.8%
2044	28.5%	29.9%
2043	28.7%	30%
2042	28.9%	30.1%
2041	29.1%	30.1%
2040	29.3%	30.2%
2039	29.5%	30.2%
2038	29.8%	30.3%
2037	30.1%	30.4%
2036	30.4%	30.6%
2035	30.8%	30.7%
2034	31.1%	30.9%
2033	31.5%	31.1%
2032	31.8%	31.4%
2031	32.2%	31.8%
2030	32.6%	32.3%
2029	32.9%	33%
2028	33.3%	33.6%
2027	33.7%	34.1%
2026	34.2%	34.6%
2025	34.6%	35.2%
2024	34.7%	35.4%
2023	34.9%	35.6%
2022	35.1%	35.6%
2021	35.2%	35.7%
2020	35.2%	35.8%
2019	35.1%	36%
2018	35.1%	36.2%
2017	35%	36.4%
2016	35%	36.5%
2015	35.2%	36.7%
2014	35.4%	36.9%
2013	35.7%	37.1%
2012	36.1%	37.2%
2011	36.4%	37.4%
2010	36.6%	37.6%
2009	36.8%	37.8%
2008	37%	38%
2007	37.3%	38.3%
2006	37.6%	38.3%
2005	38%	38.3%
2004	38.4%	38.2%
2003	38.9%	38.1%
2002	39.3%	38.1%
2001	39.8%	38.2%
2000	40.1%	38.3%
1999	40.5%	38.6%
1998	40.8%	38.9%
1997	41%	39.3%
1996	41.1%	39.7%
1995	41.2%	39.9%
1994	41.2%	40.1%
1993	41%	40.3%
1992	40.8%	40.5%
1991	40.5%	40.6%
1990	40.2%	40.8%
1989	39.9%	40.9%
1988	39.7%	41.2%
1987	39.4%	41.5%
1986	39.2%	41.7%
1985	39.2%	42%
1984	39.2%	42.4%
1983	39.5%	42.9%
1982	39.9%	43.4%
1981	40.5%	43.9%
1980	41.1%	44.3%
1979	41.8%	44.8%
1978	42.3%	45.3%
1977	42.8%	45.8%
1976	43.2%	46.1%
1975	43.7%	46.2%
1974	44.2%	46.2%
1973	44.6%	46.2%
1972	44.8%	46.3%
1971	44.8%	46.4%
1970	44.9%	46.4%
1969	45%	46.3%
1968	44.9%	46.2%
1967	44.5%	46%
1966	44.1%	45.9%
1965	43.9%	45.9%
1964	44%	45.9%
1963	44%	45.9%
1962	43.8%	45.8%
1961	43.5%	45.7%
1960	43.2%	45.7%

Children aged 0-14 make up 34.7% of the population in Kiribati and 35.4% in Tonga in 2024, compared to 40.2% and 40.8% respectively in 1990.

Demographics of Kiribati and Tonga compared.

Maternal mortality chart: Kiribati vs Tonga

Chart Table

Kiribati

Tonga

1x

Year	Maternal mortality per 100K births
	Kiribati	Tonga
2023	80	67
2022	86	72
2021	122	76
2020	89	74
2019	89	73
2018	87	74
2017	90	77
2016	88	78
2015	90	79
2014	91	80
2013	93	80
2012	98	83
2011	98	84
2010	102	85
2009	99	91
2008	100	88
2007	101	88
2006	102	89
2005	104	92
2004	106	92
2003	105	95
2002	109	98
2001	113	98
2000	119	100
1999	121	99
1998	126	104
1997	132	111
1996	141	113
1995	148	117
1994	150	123
1993	162	127
1992	175	129
1991	188	134
1990	199	138
1989	212	139
1988	220	145
1987	231	147
1986	232	149
1985	246	148

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 67 deaths in Tonga.

Under-five mortality rates

Chart Table

Kiribati

Tonga

Probability that a newborn baby will die before reaching age five

1x

Year	Under 5 mortality rate
	Kiribati	Tonga
2023	5.51%	0.99%
2022	5.65%	1.02%
2021	5.76%	1.05%
2020	5.86%	1.08%
2019	5.93%	1.1%
2018	5.98%	1.12%
2017	5.99%	1.15%
2016	5.95%	1.17%
2015	5.89%	1.19%
2014	5.84%	1.22%
2013	5.8%	1.24%
2012	5.78%	1.26%
2011	5.79%	1.29%
2010	5.82%	1.31%
2009	5.87%	1.34%
2008	5.93%	1.37%
2007	5.99%	1.41%
2006	6.03%	1.44%
2005	6.07%	1.48%
2004	6.13%	1.52%
2003	6.2%	1.56%
2002	6.31%	1.61%
2001	6.46%	1.65%
2000	6.64%	1.7%
1999	6.83%	1.74%
1998	7.02%	1.78%
1997	7.22%	1.81%
1996	7.42%	1.85%
1995	7.64%	1.89%
1994	7.87%	1.94%
1993	8.13%	2%
1992	8.44%	2.06%
1991	8.77%	2.14%
1990	9.13%	2.21%
1989	9.5%	2.29%
1988	9.87%	2.37%
1987	10.2%	2.44%
1986	10.6%	2.51%
1985	10.9%	2.57%
1984	11.1%	2.63%
1983	11.4%	2.7%
1982	11.6%	2.78%
1981	11.7%	2.87%
1980	11.9%	2.97%
1979	12%	3.09%
1978	12.2%	3.22%
1977	12.3%	3.37%
1976	12.4%	3.53%
1975	12.5%	3.71%
1974	12.7%	3.9%
1973	13%	4.11%
1972	13.3%	4.35%
1971	13.7%	4.61%
1970	14.1%	4.91%
1969	14.6%	5.25%
1968	15.2%	5.63%
1967	15.8%	6.03%
1966	16.4%	6.45%
1965	17.1%	6.89%
1964	17.7%	7.35%
1963	18.3%	7.83%
1962	18.9%	-
1961	19.5%	-
1960	19.9%	-

The chance that a newborn baby will die before reaching age five is 5.51% in Kiribati and 0.99% in Tonga. Above is a chart with historical data on under-five mortality rates.