Fertility & birth rates in Kiribati and Tanzania

Fertility rate in Kiribati vs Tanzania chart

According to the latest available data on birth rates, the fertility rate in Kiribati was 3.15 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 Kiribati vs Tanzania population clock for a dynamic visualization of the changing population.

The chart below showcases historical changes in the birth rates.

Table

Year	Fertility rate
	Kiribati	Tanzania
1960	6.44	6.54
1961	6.48	6.56
1962	6.42	6.61
1963	6.35	6.65
1964	6.29	6.68
1965	6.26	6.73
1966	6.23	6.8
1967	6.11	6.86
1968	5.98	6.9
1969	5.85	6.95
1970	5.71	7
1971	5.55	7.04
1972	5.37	7.05
1973	5.2	7.06
1974	5.09	7.12
1975	5.02	7.1
1976	4.96	7.09
1977	4.96	7.07
1978	4.97	7.06
1979	4.97	7.04
1980	4.96	6.99
1981	4.96	6.93
1982	4.95	6.87
1983	4.91	6.81
1984	4.91	6.72
1985	4.91	6.6
1986	4.87	6.49
1987	4.81	6.41
1988	4.73	6.38
1989	4.69	6.3
1990	4.67	6.2
1991	4.64	6.14
1992	4.57	6.08
1993	4.49	6
1994	4.44	5.89
1995	4.42	5.82
1996	4.43	5.83
1997	4.37	5.84
1998	4.29	5.81
1999	4.18	5.75
2000	4.07	5.67
2001	3.96	5.62
2002	3.81	5.57
2003	3.7	5.58
2004	3.73	5.6
2005	3.76	5.58
2006	3.82	5.51
2007	3.87	5.4
2008	3.9	5.32
2009	3.91	5.26
2010	3.9	5.23
2011	3.88	5.14
2012	3.77	5.14
2013	3.64	5.16
2014	3.52	5.12
2015	3.44	5.03
2016	3.38	5.01
2017	3.34	4.99
2018	3.32	4.93
2019	3.29	4.87
2020	3.25	4.8
2021	3.22	4.73
2022	3.18	4.67
2023	3.15	4.61
2024	3.12	4.54
2025	3.09	4.47
2026	3.06	4.41
2027	3.03	4.34
2028	3	4.28
2029	2.97	4.22
2030	2.94	4.16
2031	2.92	4.11
2032	2.89	4.04
2033	2.86	3.98
2034	2.84	3.94
2035	2.81	3.88
2036	2.79	3.83
2037	2.77	3.76
2038	2.74	3.72
2039	2.72	3.67
2040	2.69	3.63
2041	2.67	3.57
2042	2.64	3.54
2043	2.62	3.49
2044	2.6	3.46
2045	2.58	3.4
2046	2.56	3.39
2047	2.54	3.35
2048	2.52	3.31
2049	2.5	3.25
2050	2.48	3.23

Children 0-14 years as share of population

Table

Year	Share of people 0-14 years old
	Kiribati	Tanzania
1960	43.2%	44.9%
1961	43.5%	44.8%
1962	43.8%	44.8%
1963	44%	44.8%
1964	44%	45%
1965	43.9%	45.2%
1966	44.1%	45.4%
1967	44.5%	45.6%
1968	44.9%	45.8%
1969	45%	45.9%
1970	44.9%	46%
1971	44.8%	46.1%
1972	44.8%	46.1%
1973	44.6%	46.2%
1974	44.2%	46.3%
1975	43.7%	46.4%
1976	43.2%	46.5%
1977	42.8%	46.6%
1978	42.3%	46.7%
1979	41.8%	46.9%
1980	41.1%	47.2%
1981	40.5%	47.4%
1982	39.9%	47.5%
1983	39.5%	47.6%
1984	39.2%	47.5%
1985	39.2%	47.4%
1986	39.2%	47.2%
1987	39.4%	46.9%
1988	39.7%	46.7%
1989	39.9%	46.5%
1990	40.2%	46.3%
1991	40.5%	46.2%
1992	40.8%	46%
1993	41%	45.5%
1994	41.2%	44.9%
1995	41.2%	44.5%
1996	41.1%	44.7%
1997	41%	44.8%
1998	40.8%	44.7%
1999	40.5%	44.7%
2000	40.1%	44.6%
2001	39.8%	44.5%
2002	39.3%	44.6%
2003	38.9%	44.6%
2004	38.4%	44.7%
2005	38%	44.8%
2006	37.6%	44.9%
2007	37.3%	45%
2008	37%	45.1%
2009	36.8%	45.3%
2010	36.6%	45.3%
2011	36.4%	45.2%
2012	36.1%	45.1%
2013	35.7%	44.9%
2014	35.4%	44.8%
2015	35.2%	44.5%
2016	35%	44.2%
2017	35%	44%
2018	35.1%	43.8%
2019	35.1%	43.6%
2020	35.2%	43.4%
2021	35.2%	43.1%
2022	35.1%	42.9%
2023	34.9%	42.7%
2024	34.7%	42.5%
2025	34.4%	42.3%
2026	34%	42.1%
2027	33.5%	41.9%
2028	33.1%	41.7%
2029	32.7%	41.4%
2030	32.4%	41.1%
2031	32%	40.9%
2032	31.7%	40.5%
2033	31.3%	40.2%
2034	31%	39.8%
2035	30.6%	39.5%
2036	30.3%	39.1%
2037	30%	38.8%
2038	29.7%	38.4%
2039	29.4%	38.1%
2040	29.2%	37.8%
2041	29%	37.5%
2042	28.8%	37.1%
2043	28.6%	36.8%
2044	28.4%	36.5%
2045	28.3%	36.2%
2046	28.1%	35.9%
2047	27.9%	35.6%
2048	27.8%	35.4%
2049	27.6%	35.1%
2050	27.4%	34.8%

Children aged 0-14 make up 34.7% of the population in Kiribati and 42.5% in Tanzania in 2024, compared to 40.2% and 46.3% respectively in 1990.

Demographics of Kiribati and Tanzania compared.

Natural population change in Kiribati vs Tanzania by year

For the past 10 years, the annual natural population change (excluding migration) has been +2.05% in Kiribati and +3.05% in Tanzania. The chart below illustrates the comparison of the absolute yearly changes resulting from births and deaths.

Table

Year	Population change due to births and deaths
	Kiribati	Tanzania
1960	1,141	275,814
1961	1,199	286,839
1962	1,233	300,663
1963	1,273	314,644
1964	1,318	328,527
1965	1,376	343,456
1966	1,437	360,229
1967	1,417	374,763
1968	1,393	389,467
1969	1,367	408,322
1970	1,388	427,988
1971	1,406	449,014
1972	1,406	467,305
1973	1,409	488,429
1974	1,430	515,152
1975	1,423	533,906
1976	1,425	553,617
1977	1,426	574,938
1978	1,480	595,024
1979	1,509	613,388
1980	1,571	629,444
1981	1,635	645,496
1982	1,697	662,627
1983	1,748	679,720
1984	1,813	687,435
1985	1,881	697,867
1986	1,933	705,677
1987	1,982	718,580
1988	2,022	736,551
1989	2,073	743,854
1990	2,127	750,825
1991	2,176	762,011
1992	2,173	767,961
1993	2,161	778,044
1994	2,168	803,953
1995	2,183	838,980
1996	2,217	868,524
1997	2,220	882,544
1998	2,210	920,806
1999	2,186	948,659
2000	2,153	985,185
2001	2,121	1,026,242
2002	2,074	1,063,195
2003	2,045	1,118,435
2004	2,118	1,175,379
2005	2,188	1,224,165
2006	2,285	1,257,927
2007	2,393	1,278,285
2008	2,493	1,303,728
2009	2,573	1,332,015
2010	2,644	1,363,477
2011	2,709	1,384,886
2012	2,678	1,439,325
2013	2,629	1,509,008
2014	2,577	1,565,630
2015	2,555	1,592,882
2016	2,546	1,659,502
2017	2,549	1,726,909
2018	2,561	1,777,852
2019	2,560	1,816,669
2020	2,497	1,861,377
2021	2,408	1,880,137
2022	2,522	1,927,960
2023	2,487	1,960,623

Maternal mortality chart: Kiribati vs Tanzania

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 276 deaths in Tanzania.

Table

Year	Maternal mortality per 100K births
	Kiribati	Tanzania
1985	246	980
1986	232	971
1987	231	964
1988	220	949
1989	212	927
1990	199	900
1991	188	873
1992	175	864
1993	162	851
1994	150	816
1995	148	797
1996	141	775
1997	132	777
1998	126	739
1999	121	635
2000	119	568
2001	113	493
2002	109	454
2003	105	397
2004	106	365
2005	104	350
2006	102	366
2007	101	453
2008	100	511
2009	99	502
2010	102	486
2011	98	475
2012	98	448
2013	93	479
2014	91	454
2015	90	433
2016	88	396
2017	90	345
2018	87	319
2019	89	292
2020	89	160
2021	122	162
2022	86	152
2023	80	276

Under-five mortality rates

The chance that a newborn baby will die before reaching age five is 5.51% in Kiribati and 3.89% in Tanzania. Below is the historical data on under-five mortality rates.

Table

Year	Mortality rate before reaching 5 years of age, per 1,000 live births
	Kiribati	Tanzania
1960	19.9%	24.2%
1961	19.5%	24%
1962	18.9%	23.8%
1963	18.3%	23.6%
1964	17.7%	23.4%
1965	17.1%	23.1%
1966	16.4%	22.8%
1967	15.8%	22.5%
1968	15.2%	22.2%
1969	14.6%	21.9%
1970	14.1%	21.6%
1971	13.7%	21.2%
1972	13.3%	20.9%
1973	13%	20.5%
1974	12.7%	20.1%
1975	12.5%	19.6%
1976	12.4%	19.2%
1977	12.3%	18.8%
1978	12.2%	18.4%
1979	12%	18.1%
1980	11.9%	17.9%
1981	11.7%	17.8%
1982	11.6%	17.8%
1983	11.4%	17.8%
1984	11.1%	17.8%
1985	10.9%	17.7%
1986	10.6%	17.6%
1987	10.2%	17.4%
1988	9.87%	17.2%
1989	9.5%	16.9%
1990	9.13%	16.7%
1991	8.77%	16.5%
1992	8.44%	16.3%
1993	8.13%	16.1%
1994	7.87%	15.9%
1995	7.64%	15.6%
1996	7.42%	15.2%
1997	7.22%	14.8%
1998	7.02%	14.2%
1999	6.83%	13.6%
2000	6.64%	12.8%
2001	6.46%	12.1%
2002	6.31%	11.3%
2003	6.2%	10.5%
2004	6.13%	9.86%
2005	6.07%	9.24%
2006	6.03%	8.69%
2007	5.99%	8.16%
2008	5.93%	7.7%
2009	5.87%	7.24%
2010	5.82%	6.86%
2011	5.79%	6.5%
2012	5.78%	6.21%
2013	5.8%	5.95%
2014	5.84%	5.67%
2015	5.89%	5.48%
2016	5.95%	5.25%
2017	5.99%	5.02%
2018	5.98%	4.8%
2019	5.93%	4.6%
2020	5.86%	4.42%
2021	5.76%	4.22%
2022	5.65%	4.05%
2023	5.51%	3.89%