Fertility & birth rates in Tanzania and Tonga

Fertility rate in Tanzania vs Tonga by year

Chart Table

Tanzania

Tonga

1x

Year	Fertility rate
	Tanzania	Tonga
2023	4.61	3.13
2022	4.67	3.17
2021	4.73	3.2
2020	4.8	3.23
2019	4.87	3.27
2018	4.93	3.33
2017	4.99	3.39
2016	5.01	3.46
2015	5.03	3.54
2014	5.12	3.62
2013	5.16	3.7
2012	5.14	3.77
2011	5.14	3.83
2010	5.23	3.88
2009	5.26	3.95
2008	5.32	4.01
2007	5.4	4.09
2006	5.51	4.14
2005	5.58	4.2
2004	5.6	4.19
2003	5.58	4.18
2002	5.57	4.14
2001	5.62	4.13
2000	5.67	4.16
1999	5.75	4.23
1998	5.81	4.31
1997	5.84	4.38
1996	5.83	4.46
1995	5.82	4.56
1994	5.89	4.66
1993	6	4.73
1992	6.08	4.79
1991	6.14	4.85
1990	6.2	4.93
1989	6.3	5.01
1988	6.38	5.1
1987	6.41	5.19
1986	6.49	5.27
1985	6.6	5.34
1984	6.72	5.41
1983	6.81	5.45
1982	6.87	5.5
1981	6.93	5.55
1980	6.99	5.6
1979	7.04	5.65
1978	7.06	5.68
1977	7.07	5.7
1976	7.09	5.73
1975	7.1	5.75
1974	7.12	5.77
1973	7.06	5.8
1972	7.05	5.86
1971	7.04	5.96
1970	7	6.07
1969	6.95	6.17
1968	6.9	6.23
1967	6.86	6.29
1966	6.8	6.35
1965	6.73	6.41
1964	6.68	6.46
1963	6.65	6.52
1962	6.61	6.57
1961	6.56	6.61
1960	6.54	6.65

According to the latest available data on birth rates, the fertility rate in Tanzania was 4.61 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 Tanzania vs Tonga population clock for a dynamic visualization of the changing population.

Natural population change by year

Chart Table

Tanzania

Tonga

1x

Year	Natural population change
	Tanzania	Tonga
2023	1,960,623	1,744
2022	1,927,960	1,772
2021	1,880,137	1,773
2020	1,861,377	1,816
2019	1,816,669	1,841
2018	1,777,852	1,873
2017	1,726,909	1,912
2016	1,659,502	1,989
2015	1,592,882	2,064
2014	1,565,630	2,135
2013	1,509,008	2,199
2012	1,439,325	2,255
2011	1,384,886	2,298
2010	1,363,477	2,332
2009	1,332,015	2,358
2008	1,303,728	2,397
2007	1,278,285	2,423
2006	1,257,927	2,459
2005	1,224,165	2,495
2004	1,175,379	2,478
2003	1,118,435	2,448
2002	1,063,195	2,396
2001	1,026,242	2,358
2000	985,185	2,346
1999	948,659	2,352
1998	920,806	2,344
1997	882,544	2,332
1996	868,524	2,393
1995	838,980	2,476
1994	803,953	2,547
1993	778,044	2,594
1992	767,961	2,622
1991	762,011	2,637
1990	750,825	2,641
1989	743,854	2,644
1988	736,551	2,649
1987	718,580	2,646
1986	705,677	2,704
1985	697,867	2,762
1984	687,435	2,814
1983	679,720	2,840
1982	662,627	2,853
1981	645,496	2,882
1980	629,444	2,885
1979	613,388	2,884
1978	595,024	2,862
1977	574,938	2,822
1976	553,617	2,769
1975	533,906	2,709
1974	515,152	2,650
1973	488,429	2,617
1972	467,305	2,605
1971	449,014	2,611
1970	427,988	2,628
1969	408,322	2,632
1968	389,467	2,614
1967	374,763	2,603
1966	360,229	2,550
1965	343,456	2,498
1964	328,527	2,445
1963	314,644	2,394
1962	300,663	2,343
1961	286,839	2,284
1960	275,814	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 +2.94% in Tanzania and +1.67% in Tonga.

For the past 10 years, the annual natural population change has been +3.05% in Tanzania and +1.79% in Tonga.

Birth rate in Tanzania vs Tonga by year

Chart Table

Tanzania

Tonga

Annual births per 1,000 people

1x

Year	Annual births per 1,000 people
	Tanzania	Tonga
2023	35.2	23.1
2022	35.6	23.4
2021	36	23.5
2020	36.4	23.6
2019	36.9	23.8
2018	37.3	24.1
2017	37.6	24.5
2016	37.6	25.2
2015	37.6	25.8
2014	38.4	26.4
2013	38.4	26.9
2012	38.1	27.3
2011	38.1	27.7
2010	38.8	28
2009	39.2	28.4
2008	39.6	28.7
2007	40.2	29
2006	41	29.5
2005	41.5	30
2004	41.5	30
2003	41.3	29.9
2002	41.2	29.5
2001	41.4	29.4
2000	41.5	29.4
1999	41.8	29.6
1998	42.1	29.7
1997	42.1	29.8
1996	42.3	30.6
1995	41.9	31.4
1994	41.5	32.2
1993	41.7	32.7
1992	42.3	33
1991	42.7	33.2
1990	43	33.3
1989	43.5	33.4
1988	44	33.5
1987	44.3	33.7
1986	44.9	34.4
1985	45.7	34.9
1984	46.4	35.4
1983	47.1	35.6
1982	47.5	35.8
1981	47.9	36
1980	48.3	36.1
1979	48.8	36.1
1978	49.2	36
1977	49.5	35.7
1976	49.8	35.6
1975	50.2	35.8
1974	50.6	36
1973	50.3	36.5
1972	50.4	37
1971	50.6	37.8
1970	50.4	38.8
1969	50.3	39.6
1968	50.2	40.3
1967	50.3	41
1966	50.2	41.4
1965	49.9	41.9
1964	49.8	42.4
1963	49.7	42.9
1962	49.4	43.4
1961	49.1	43.9
1960	49	44.3

The latest reported birth rate per 1,000 people in 2023 was 35.2 in Tanzania and 23.1 in Tonga, compared with 49 and 44.3, respectively, in 1960.

Children 0-14 years as share of population

Chart Table

Tanzania

Factual

UN forecast

Tonga

Factual

UN forecast

1x

Year	Young
	Tanzania	Tonga
2100	23.4%	17.5%
2099	23.6%	17.6%
2098	23.8%	17.7%
2097	23.9%	17.7%
2096	24.1%	17.9%
2095	24.3%	18%
2094	24.5%	18.1%
2093	24.7%	18.3%
2092	24.8%	18.4%
2091	25%	18.6%
2090	25.2%	18.8%
2089	25.4%	19%
2088	25.6%	19.3%
2087	25.8%	19.5%
2086	26%	19.7%
2085	26.2%	20%
2084	26.4%	20.2%
2083	26.6%	20.4%
2082	26.8%	20.7%
2081	27.1%	20.9%
2080	27.3%	21.1%
2079	27.5%	21.3%
2078	27.7%	21.5%
2077	28%	21.7%
2076	28.2%	21.9%
2075	28.4%	22%
2074	28.7%	22.2%
2073	28.9%	22.3%
2072	29.1%	22.4%
2071	29.4%	22.6%
2070	29.6%	22.7%
2069	29.8%	22.8%
2068	30.1%	23%
2067	30.3%	23.2%
2066	30.6%	23.4%
2065	30.8%	23.6%
2064	31.1%	23.8%
2063	31.3%	24.1%
2062	31.6%	24.4%
2061	31.9%	24.7%
2060	32.1%	25%
2059	32.4%	25.4%
2058	32.7%	25.8%
2057	32.9%	26.2%
2056	33.2%	26.6%
2055	33.5%	27%
2054	33.8%	27.4%
2053	34.1%	27.8%
2052	34.3%	28.2%
2051	34.6%	28.5%
2050	34.9%	28.9%
2049	35.2%	29.1%
2048	35.5%	29.4%
2047	35.8%	29.6%
2046	36.1%	29.7%
2045	36.4%	29.8%
2044	36.7%	29.9%
2043	37%	30%
2042	37.3%	30.1%
2041	37.6%	30.1%
2040	37.9%	30.2%
2039	38.3%	30.2%
2038	38.6%	30.3%
2037	39%	30.4%
2036	39.3%	30.6%
2035	39.6%	30.7%
2034	40%	30.9%
2033	40.3%	31.1%
2032	40.7%	31.4%
2031	41%	31.8%
2030	41.3%	32.3%
2029	41.6%	33%
2028	41.8%	33.6%
2027	42.1%	34.1%
2026	42.2%	34.6%
2025	42.4%	35.2%
2024	42.5%	35.4%
2023	42.7%	35.6%
2022	42.9%	35.6%
2021	43.1%	35.7%
2020	43.4%	35.8%
2019	43.6%	36%
2018	43.8%	36.2%
2017	44%	36.4%
2016	44.2%	36.5%
2015	44.5%	36.7%
2014	44.8%	36.9%
2013	44.9%	37.1%
2012	45.1%	37.2%
2011	45.2%	37.4%
2010	45.3%	37.6%
2009	45.3%	37.8%
2008	45.1%	38%
2007	45%	38.3%
2006	44.9%	38.3%
2005	44.8%	38.3%
2004	44.7%	38.2%
2003	44.6%	38.1%
2002	44.6%	38.1%
2001	44.5%	38.2%
2000	44.6%	38.3%
1999	44.7%	38.6%
1998	44.7%	38.9%
1997	44.8%	39.3%
1996	44.7%	39.7%
1995	44.5%	39.9%
1994	44.9%	40.1%
1993	45.5%	40.3%
1992	46%	40.5%
1991	46.2%	40.6%
1990	46.3%	40.8%
1989	46.5%	40.9%
1988	46.7%	41.2%
1987	46.9%	41.5%
1986	47.2%	41.7%
1985	47.4%	42%
1984	47.5%	42.4%
1983	47.6%	42.9%
1982	47.5%	43.4%
1981	47.4%	43.9%
1980	47.2%	44.3%
1979	46.9%	44.8%
1978	46.7%	45.3%
1977	46.6%	45.8%
1976	46.5%	46.1%
1975	46.4%	46.2%
1974	46.3%	46.2%
1973	46.2%	46.2%
1972	46.1%	46.3%
1971	46.1%	46.4%
1970	46%	46.4%
1969	45.9%	46.3%
1968	45.8%	46.2%
1967	45.6%	46%
1966	45.4%	45.9%
1965	45.2%	45.9%
1964	45%	45.9%
1963	44.8%	45.9%
1962	44.8%	45.8%
1961	44.8%	45.7%
1960	44.9%	45.7%

Children aged 0-14 make up 42.5% of the population in Tanzania and 35.4% in Tonga in 2024, compared to 46.3% and 40.8% respectively in 1990.

Demographics of Tanzania and Tonga compared.

Maternal mortality chart: Tanzania vs Tonga

Chart Table

Tanzania

Tonga

1x

Year	Maternal mortality per 100K births
	Tanzania	Tonga
2023	276	67
2022	152	72
2021	162	76
2020	160	74
2019	292	73
2018	319	74
2017	345	77
2016	396	78
2015	433	79
2014	454	80
2013	479	80
2012	448	83
2011	475	84
2010	486	85
2009	502	91
2008	511	88
2007	453	88
2006	366	89
2005	350	92
2004	365	92
2003	397	95
2002	454	98
2001	493	98
2000	568	100
1999	635	99
1998	739	104
1997	777	111
1996	775	113
1995	797	117
1994	816	123
1993	851	127
1992	864	129
1991	873	134
1990	900	138
1989	927	139
1988	949	145
1987	964	147
1986	971	149
1985	980	148

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 276 deaths per 100,000 live births in Tanzania, compared to 67 deaths in Tonga.

Under-five mortality rates

Chart Table

Tanzania

Tonga

Probability that a newborn baby will die before reaching age five

1x

Year	Under 5 mortality rate
	Tanzania	Tonga
2023	3.89%	0.99%
2022	4.05%	1.02%
2021	4.22%	1.05%
2020	4.42%	1.08%
2019	4.6%	1.1%
2018	4.8%	1.12%
2017	5.02%	1.15%
2016	5.25%	1.17%
2015	5.48%	1.19%
2014	5.67%	1.22%
2013	5.95%	1.24%
2012	6.21%	1.26%
2011	6.5%	1.29%
2010	6.86%	1.31%
2009	7.24%	1.34%
2008	7.7%	1.37%
2007	8.16%	1.41%
2006	8.69%	1.44%
2005	9.24%	1.48%
2004	9.86%	1.52%
2003	10.5%	1.56%
2002	11.3%	1.61%
2001	12.1%	1.65%
2000	12.8%	1.7%
1999	13.6%	1.74%
1998	14.2%	1.78%
1997	14.8%	1.81%
1996	15.2%	1.85%
1995	15.6%	1.89%
1994	15.9%	1.94%
1993	16.1%	2%
1992	16.3%	2.06%
1991	16.5%	2.14%
1990	16.7%	2.21%
1989	16.9%	2.29%
1988	17.2%	2.37%
1987	17.4%	2.44%
1986	17.6%	2.51%
1985	17.7%	2.57%
1984	17.8%	2.63%
1983	17.8%	2.7%
1982	17.8%	2.78%
1981	17.8%	2.87%
1980	17.9%	2.97%
1979	18.1%	3.09%
1978	18.4%	3.22%
1977	18.8%	3.37%
1976	19.2%	3.53%
1975	19.6%	3.71%
1974	20.1%	3.9%
1973	20.5%	4.11%
1972	20.9%	4.35%
1971	21.2%	4.61%
1970	21.6%	4.91%
1969	21.9%	5.25%
1968	22.2%	5.63%
1967	22.5%	6.03%
1966	22.8%	6.45%
1965	23.1%	6.89%
1964	23.4%	7.35%
1963	23.6%	7.83%
1962	23.8%	-
1961	24%	-
1960	24.2%	-

The chance that a newborn baby will die before reaching age five is 3.89% in Tanzania and 0.99% in Tonga. Above is a chart with historical data on under-five mortality rates.