Fertility & birth rates in Iran and Sao Tome and Principe

Fertility rate in Iran vs Sao Tome and Principe chart

According to the latest available data on birth rates, the fertility rate in Iran was 1.7 children per woman in 2023, compared to 3.64 in Sao Tome and Principe in 2023. The replacement level is considered to be 2.1 children per woman.

Check Iran vs Sao Tome and Principe population clock for a dynamic visualization of the changing population.

The chart below showcases historical changes in the birth rates.

Table

Year	Fertility rate
	Iran	Sao Tome
1960	7.52	6.24
1961	7.46	6.26
1962	7.4	6.28
1963	7.32	6.31
1964	7.24	6.33
1965	7.22	6.35
1966	7.21	6.37
1967	7.19	6.39
1968	7.12	6.42
1969	7.01	6.44
1970	6.8	6.47
1971	6.55	6.49
1972	6.26	6.51
1973	6.06	6.53
1974	5.97	6.53
1975	5.95	6.53
1976	6.07	6.52
1977	6.18	6.5
1978	6.34	6.47
1979	6.55	6.43
1980	6.63	6.39
1981	6.62	6.33
1982	6.59	6.28
1983	6.53	6.22
1984	6.43	6.16
1985	6.24	6.1
1986	6.01	6.05
1987	5.72	5.99
1988	5.43	5.94
1989	5.17	5.88
1990	4.93	5.83
1991	4.57	5.77
1992	4.1	5.7
1993	3.67	5.64
1994	3.24	5.56
1995	2.85	5.55
1996	2.54	5.47
1997	2.32	5.4
1998	2.19	5.3
1999	2.09	5.23
2000	2	5.16
2001	1.92	5.1
2002	1.84	5.06
2003	1.8	5.01
2004	1.78	4.96
2005	1.76	4.94
2006	1.76	4.93
2007	1.75	4.96
2008	1.74	4.91
2009	1.74	4.84
2010	1.75	4.77
2011	1.79	4.72
2012	1.85	4.66
2013	1.91	4.58
2014	1.98	4.49
2015	2.02	4.35
2016	2.05	4.2
2017	2.02	4.07
2018	1.92	3.98
2019	1.77	3.9
2020	1.7	3.83
2021	1.71	3.76
2022	1.7	3.7
2023	1.7	3.64
2024	1.68	3.6
2025	1.67	3.53
2026	1.66	3.47
2027	1.65	3.42
2028	1.64	3.36
2029	1.64	3.32
2030	1.63	3.26
2031	1.63	3.21
2032	1.63	3.17
2033	1.63	3.13
2034	1.63	3.09
2035	1.63	3.04
2036	1.63	3.01
2037	1.63	2.97
2038	1.63	2.94
2039	1.63	2.9
2040	1.63	2.87
2041	1.63	2.83
2042	1.63	2.8
2043	1.63	2.78
2044	1.63	2.75
2045	1.63	2.73
2046	1.63	2.7
2047	1.63	2.67
2048	1.63	2.64
2049	1.63	2.62
2050	1.63	2.59

Children 0-14 years as share of population

Table

Year	Share of people 0-14 years old
	Iran	Sao Tome
1960	43.5%	32.9%
1961	44.1%	34.3%
1962	44.6%	36.6%
1963	44.9%	38.5%
1964	45%	40.2%
1965	45%	41.6%
1966	44.9%	42.9%
1967	44.8%	44%
1968	44.8%	44.9%
1969	44.7%	45.8%
1970	44.6%	46.2%
1971	44.4%	46.1%
1972	44.2%	45.9%
1973	43.8%	45.7%
1974	43.5%	45.6%
1975	43.2%	45.5%
1976	43%	45.4%
1977	42.9%	45.3%
1978	43%	45.2%
1979	43.1%	45.1%
1980	43.3%	44.9%
1981	42.9%	44.7%
1982	42.7%	44.5%
1983	43%	44.5%
1984	43.3%	44.4%
1985	43.5%	44.5%
1986	43.7%	44.7%
1987	43.9%	44.9%
1988	44%	45%
1989	44.2%	45%
1990	44.1%	45.1%
1991	43.9%	45.1%
1992	43.6%	45.2%
1993	43.6%	45.2%
1994	43.2%	45.1%
1995	42.1%	44.9%
1996	40.7%	44.7%
1997	39.1%	44.3%
1998	37.3%	43.9%
1999	35.4%	43.4%
2000	33.6%	42.8%
2001	31.7%	42.5%
2002	30.1%	42.3%
2003	28.7%	42.2%
2004	27.4%	42.1%
2005	26.2%	42%
2006	25.3%	42%
2007	24.6%	42%
2008	24%	42.1%
2009	23.7%	42.1%
2010	23.4%	42.1%
2011	23.3%	42%
2012	23.3%	42%
2013	23.3%	42%
2014	23.4%	42%
2015	23.6%	41.9%
2016	23.8%	41.7%
2017	23.9%	41.4%
2018	24%	40.9%
2019	23.9%	40.5%
2020	23.8%	39.9%
2021	23.6%	39.4%
2022	23.2%	38.8%
2023	22.8%	38.3%
2024	22.4%	37.8%
2025	22%	37.5%
2026	21.6%	37.2%
2027	21.1%	36.8%
2028	20.5%	36.4%
2029	19.9%	36%
2030	19.3%	35.6%
2031	18.6%	35.4%
2032	18%	35.2%
2033	17.4%	35%
2034	17%	34.8%
2035	16.7%	34.7%
2036	16.4%	34.5%
2037	16.2%	34.2%
2038	15.9%	34%
2039	15.8%	33.8%
2040	15.6%	33.5%
2041	15.5%	33.2%
2042	15.4%	32.9%
2043	15.3%	32.6%
2044	15.3%	32.3%
2045	15.2%	32%
2046	15.2%	31.6%
2047	15.2%	31.3%
2048	15.2%	31%
2049	15.1%	30.6%
2050	15.1%	30.2%

Children aged 0-14 make up 22.4% of the population in Iran and 37.8% in Sao Tome and Principe in 2024, compared to 44.1% and 45.1% respectively in 1990.

Demographics of Iran and Sao Tome and Principe compared.

Natural population change in Iran vs Sao Tome and Principe by year

For the past 10 years, the annual natural population change (excluding migration) has been +1.1% in Iran and +2.4% in Sao Tome and Principe. 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
	Iran	Sao Tome
1960	584,060	1,547
1961	594,674	1,657
1962	595,538	1,625
1963	620,126	1,609
1964	635,589	1,600
1965	663,029	1,611
1966	695,040	1,642
1967	727,276	1,693
1968	743,992	1,767
1969	780,660	1,862
1970	794,612	1,980
1971	805,830	2,127
1972	804,043	2,232
1973	831,880	2,329
1974	873,369	2,422
1975	929,481	2,515
1976	1,013,347	2,608
1977	1,091,542	2,705
1978	1,156,974	2,800
1979	1,294,306	2,893
1980	1,361,293	2,965
1981	1,376,830	3,015
1982	1,514,240	3,047
1983	1,573,612	3,100
1984	1,653,051	3,163
1985	1,661,750	3,242
1986	1,659,289	3,180
1987	1,639,644	3,440
1988	1,614,512	3,544
1989	1,609,739	3,576
1990	1,530,434	3,719
1991	1,495,594	3,801
1992	1,365,466	3,822
1993	1,219,658	3,841
1994	1,008,076	3,860
1995	879,648	3,948
1996	784,508	3,993
1997	726,574	4,041
1998	717,655	4,120
1999	723,237	4,221
2000	731,203	4,334
2001	743,658	4,471
2002	752,205	4,591
2003	732,600	4,702
2004	801,203	4,810
2005	837,305	4,897
2006	884,529	5,057
2007	919,254	5,226
2008	940,983	5,297
2009	958,322	5,349
2010	980,380	5,391
2011	1,023,925	5,445
2012	1,073,804	5,501
2013	1,119,533	5,449
2014	1,158,552	5,381
2015	1,178,317	5,269
2016	1,186,949	5,125
2017	1,140,549	5,007
2018	1,035,052	4,957
2019	893,063	4,932
2020	663,978	4,874
2021	645,725	4,954
2022	753,525	5,102
2023	750,150	5,221

Maternal mortality chart: Iran vs Sao Tome and Principe

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 16 deaths per 100,000 live births in Iran, compared to 75 deaths in Sao Tome and Principe.

Table

Year	Maternal mortality per 100K births
	Iran	Sao Tome
1985	160	159
1986	148	175
1987	136	161
1988	126	157
1989	113	167
1990	107	164
1991	94	166
1992	86	164
1993	80	166
1994	71	168
1995	65	172
1996	59	171
1997	55	173
1998	50	175
1999	46	179
2000	43	180
2001	40	178
2002	38	179
2003	37	178
2004	34	177
2005	33	181
2006	32	177
2007	31	174
2008	30	174
2009	28	172
2010	27	170
2011	26	164
2012	25	158
2013	24	150
2014	23	138
2015	22	128
2016	21	119
2017	20	110
2018	19	100
2019	18	95
2020	34	92
2021	51	98
2022	21	82
2023	16	75

Under-five mortality rates

The chance that a newborn baby will die before reaching age five is 1.18% in Iran and 1.39% in Sao Tome and Principe. 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
	Iran	Sao Tome
1965	-	9.56%
1966	-	9.29%
1967	-	9.04%
1968	-	8.85%
1969	-	8.71%
1970	-	8.64%
1971	18.9%	8.63%
1972	18%	8.67%
1973	17.1%	8.73%
1974	16.2%	8.79%
1975	15.3%	8.85%
1976	14.4%	8.89%
1977	13.5%	8.93%
1978	12.6%	8.96%
1979	11.7%	9.02%
1980	10.8%	9.1%
1981	10%	9.21%
1982	9.3%	9.37%
1983	8.67%	9.56%
1984	8.13%	9.77%
1985	7.64%	9.99%
1986	7.2%	11.4%
1987	6.8%	10.4%
1988	6.42%	10.6%
1989	6.07%	10.7%
1990	5.76%	10.8%
1991	5.48%	10.9%
1992	5.22%	10.9%
1993	5%	10.8%
1994	4.79%	10.7%
1995	4.59%	10.4%
1996	4.4%	10.1%
1997	4.21%	9.73%
1998	4.02%	9.26%
1999	3.83%	8.76%
2000	3.63%	8.21%
2001	3.42%	7.66%
2002	3.22%	7.1%
2003	3.02%	6.57%
2004	2.83%	6.05%
2005	2.65%	5.56%
2006	2.48%	5.11%
2007	2.32%	4.68%
2008	2.17%	4.3%
2009	2.04%	3.95%
2010	1.93%	3.63%
2011	1.84%	3.33%
2012	1.75%	3.04%
2013	1.68%	2.77%
2014	1.61%	2.54%
2015	1.55%	2.31%
2016	1.5%	2.11%
2017	1.45%	1.95%
2018	1.39%	1.81%
2019	1.35%	1.7%
2020	1.3%	1.6%
2021	1.26%	1.53%
2022	1.22%	1.46%
2023	1.18%	1.39%