Fertility & birth rates in Costa Rica and Nauru

Fertility rate in Costa Rica vs Nauru chart

According to the latest available data on birth rates, the fertility rate in Costa Rica was 1.33 children per woman in 2023, compared to 3.33 in Nauru in 2023. The replacement level is considered to be 2.1 children per woman.

Check Costa Rica vs Nauru population clock for a dynamic visualization of the changing population.

The chart below showcases historical changes in the birth rates.

Table

Year	Fertility rate
	Costa Rica	Nauru
1960	6.71	5.34
1961	6.65	5.38
1962	6.54	5.42
1963	6.39	5.44
1964	6.19	5.47
1965	5.96	5.48
1966	5.7	5.41
1967	5.42	5.29
1968	5.03	5.14
1969	4.84	4.94
1970	4.59	4.74
1971	4.36	4.54
1972	4.16	4.36
1973	3.99	4.19
1974	3.89	4.07
1975	3.8	3.97
1976	3.75	3.9
1977	3.7	3.86
1978	3.66	3.84
1979	3.65	3.85
1980	3.58	3.88
1981	3.56	3.94
1982	3.54	3.99
1983	3.53	4.06
1984	3.52	4.11
1985	3.51	4.14
1986	3.45	4.15
1987	3.38	4.14
1988	3.31	4.11
1989	3.24	4.07
1990	3.17	4.02
1991	3.08	3.99
1992	3	3.95
1993	2.93	3.89
1994	2.86	3.84
1995	2.78	3.81
1996	2.68	3.78
1997	2.59	3.74
1998	2.53	3.68
1999	2.48	3.64
2000	2.41	3.54
2001	2.31	3.46
2002	2.16	3.4
2003	2.08	3.39
2004	2.03	3.38
2005	2.04	3.38
2006	1.94	3.4
2007	1.95	3.5
2008	1.98	3.67
2009	1.95	3.85
2010	1.83	4.02
2011	1.88	4.12
2012	1.85	4.12
2013	1.78	4.1
2014	1.8	4.09
2015	1.8	4.08
2016	1.75	4.03
2017	1.71	3.88
2018	1.71	3.68
2019	1.6	3.53
2020	1.45	3.47
2021	1.35	3.43
2022	1.34	3.38
2023	1.33	3.33
2024	1.32	3.29
2025	1.31	3.25
2026	1.31	3.2
2027	1.31	3.16
2028	1.3	3.12
2029	1.31	3.09
2030	1.31	3.05
2031	1.31	3.01
2032	1.32	2.98
2033	1.32	2.95
2034	1.32	2.92
2035	1.33	2.89
2036	1.33	2.86
2037	1.34	2.83
2038	1.34	2.8
2039	1.35	2.77
2040	1.35	2.75
2041	1.35	2.72
2042	1.36	2.7
2043	1.36	2.67
2044	1.37	2.65
2045	1.37	2.63
2046	1.37	2.61
2047	1.38	2.58
2048	1.38	2.56
2049	1.38	2.55
2050	1.38	2.53

Children 0-14 years as share of population

Table

Year	Share of people 0-14 years old
	Costa Rica	Nauru
1960	46.4%	34.8%
1961	46.6%	35.2%
1962	46.7%	35.7%
1963	46.7%	36.5%
1964	46.6%	37.5%
1965	46.5%	38.6%
1966	46.3%	39.4%
1967	45.9%	39.5%
1968	45.5%	41.3%
1969	45%	43.4%
1970	44.4%	42.9%
1971	43.8%	41.3%
1972	43.1%	39.7%
1973	42.3%	38.1%
1974	41.5%	36.4%
1975	40.8%	34.9%
1976	40%	33.4%
1977	39.2%	31.9%
1978	38.6%	30.9%
1979	38%	30.6%
1980	37.5%	30.9%
1981	37.1%	31.9%
1982	36.7%	33.2%
1983	36.5%	34.6%
1984	36.4%	35.7%
1985	36.3%	36.5%
1986	36.3%	37.5%
1987	36.2%	38.3%
1988	36.2%	39.2%
1989	36.1%	40.2%
1990	36%	41.2%
1991	35.7%	42.1%
1992	35.4%	42.5%
1993	35%	42.5%
1994	34.6%	42.1%
1995	34.1%	41.7%
1996	33.6%	41.1%
1997	33%	40.5%
1998	32.4%	39.9%
1999	31.8%	39.4%
2000	31.1%	38.9%
2001	30.5%	38.5%
2002	29.8%	38.2%
2003	29.1%	37.7%
2004	28.4%	37.1%
2005	27.7%	36.6%
2006	27.1%	36.1%
2007	26.5%	35.7%
2008	25.9%	35.6%
2009	25.4%	35.8%
2010	24.9%	36.3%
2011	24.3%	37.1%
2012	23.9%	37.7%
2013	23.4%	38%
2014	23%	38.2%
2015	22.5%	38.2%
2016	22.1%	38.2%
2017	21.8%	38%
2018	21.4%	37.6%
2019	21.1%	37.6%
2020	20.7%	38%
2021	20.3%	38.3%
2022	19.8%	38.3%
2023	19.3%	38.2%
2024	18.8%	37.8%
2025	18.3%	37.1%
2026	17.8%	36.4%
2027	17.3%	35.7%
2028	16.9%	35%
2029	16.4%	34.3%
2030	16%	33.7%
2031	15.5%	33.1%
2032	15.1%	32.7%
2033	14.7%	32.4%
2034	14.4%	32.1%
2035	14.1%	31.9%
2036	13.9%	31.6%
2037	13.8%	31.3%
2038	13.7%	31.1%
2039	13.6%	31%
2040	13.5%	31%
2041	13.4%	30.9%
2042	13.3%	30.9%
2043	13.2%	30.9%
2044	13.2%	30.9%
2045	13.1%	30.8%
2046	13%	30.7%
2047	12.9%	30.6%
2048	12.8%	30.4%
2049	12.7%	30.2%
2050	12.6%	30%

Children aged 0-14 make up 18.8% of the population in Costa Rica and 37.8% in Nauru in 2024, compared to 36% and 41.2% respectively in 1990.

Demographics of Costa Rica and Nauru compared.

Natural population change in Costa Rica vs Nauru by year

For the past 10 years, the annual natural population change (excluding migration) has been +0.74% in Costa Rica and +2.28% in Nauru. 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
	Costa Rica	Nauru
1960	48,857	72
1961	50,149	70
1962	51,046	75
1963	51,403	88
1964	51,435	100
1965	51,196	113
1966	50,755	123
1967	50,193	117
1968	48,361	116
1969	48,790	71
1970	48,398	49
1971	48,341	50
1972	48,417	53
1973	48,943	57
1974	50,349	63
1975	51,979	70
1976	54,019	79
1977	56,122	89
1978	58,327	111
1979	60,984	130
1980	62,561	145
1981	64,632	157
1982	66,826	162
1983	68,972	163
1984	71,062	166
1985	72,776	171
1986	73,211	178
1987	73,188	186
1988	72,944	195
1989	72,327	204
1990	71,727	214
1991	70,506	225
1992	69,830	237
1993	69,016	235
1994	68,336	229
1995	67,585	225
1996	66,094	221
1997	64,954	218
1998	64,788	214
1999	64,922	212
2000	64,268	207
2001	62,199	203
2002	58,388	200
2003	56,743	201
2004	55,769	202
2005	57,139	204
2006	54,177	209
2007	55,244	222
2008	56,491	240
2009	55,757	261
2010	50,803	281
2011	52,884	291
2012	52,036	292
2013	49,227	291
2014	49,559	290
2015	49,077	291
2016	45,565	289
2017	43,471	279
2018	42,469	265
2019	37,682	255
2020	29,164	246
2021	20,119	236
2022	21,409	226
2023	24,109	213

Maternal mortality chart: Costa Rica vs Nauru

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 24 deaths per 100,000 live births in Costa Rica, compared to 273 deaths in Nauru.

Table

Year	Maternal mortality per 100K births
	Costa Rica	Nauru
1985	43	191
1986	42	209
1987	41	206
1988	40	202
1989	40	198
1990	40	195
1991	39	216
1992	39	217
1993	39	219
1994	39	220
1995	39	219
1996	39	218
1997	38	218
1998	37	257
1999	36	277
2000	36	278
2001	35	299
2002	34	321
2003	33	323
2004	33	324
2005	31	328
2006	30	304
2007	30	303
2008	30	302
2009	29	300
2010	29	297
2011	28	260
2012	27	255
2013	27	247
2014	27	240
2015	26	253
2016	27	248
2017	27	259
2018	28	269
2019	26	267
2020	34	309
2021	44	266
2022	27	317
2023	24	273

Under-five mortality rates

The chance that a newborn baby will die before reaching age five is 1.05% in Costa Rica and 0.89% in Nauru. 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
	Costa Rica	Nauru
1960	9.62%	-
1961	9.36%	-
1962	9.27%	-
1963	9.25%	-
1964	9.18%	-
1965	9.02%	-
1966	8.78%	-
1967	8.49%	-
1968	8.17%	-
1969	7.85%	-
1970	7.48%	-
1971	7.02%	-
1972	6.45%	-
1973	5.82%	-
1974	5.17%	-
1975	4.54%	-
1976	3.93%	-
1977	3.39%	-
1978	2.96%	-
1979	2.65%	-
1980	2.45%	-
1981	2.33%	-
1982	2.29%	-
1983	2.27%	-
1984	2.25%	-
1985	2.2%	8.62%
1986	2.12%	8.2%
1987	2.01%	7.81%
1988	1.89%	7.43%
1989	1.78%	7.08%
1990	1.69%	6.74%
1991	1.62%	6.41%
1992	1.57%	6.09%
1993	1.53%	5.78%
1994	1.51%	5.49%
1995	1.49%	5.22%
1996	1.47%	4.97%
1997	1.45%	4.74%
1998	1.41%	4.52%
1999	1.36%	4.32%
2000	1.31%	4.13%
2001	1.26%	3.96%
2002	1.22%	3.81%
2003	1.18%	3.66%
2004	1.15%	3.53%
2005	1.13%	3.41%
2006	1.12%	3.29%
2007	1.11%	3.15%
2008	1.09%	3%
2009	1.07%	2.84%
2010	1.05%	2.66%
2011	1.02%	2.48%
2012	0.98%	2.29%
2013	0.95%	2.11%
2014	0.92%	1.93%
2015	0.9%	1.76%
2016	0.89%	1.61%
2017	0.89%	1.47%
2018	0.89%	1.34%
2019	0.91%	1.22%
2020	0.94%	1.11%
2021	0.97%	1.02%
2022	1.01%	0.95%
2023	1.05%	0.89%