Mongolia vs Sierra Leone Demographics: Median age, Gender, Race, Religion

Median age history and projection chart in
Mongolia vs Sierra Leone

Table

Year	Median age
	Mongolia	Sierra Leone
1960	22.8	21.1
1961	22.5	21.1
1962	22.2	21.1
1963	21.7	21
1964	21	21
1965	20.3	20.9
1966	19.6	20.9
1967	19	20.8
1968	18.4	20.7
1969	18	20.6
1970	17.7	20.4
1971	17.5	20.2
1972	17.3	20.1
1973	17.2	19.9
1974	17.2	19.8
1975	17.2	19.6
1976	17.2	19.5
1977	17.3	19.4
1978	17.4	19.3
1979	17.5	19.2
1980	17.7	19.1
1981	17.9	19.1
1982	18	19
1983	18.2	18.9
1984	18.4	18.9
1985	18.5	18.8
1986	18.6	18.7
1987	18.7	18.7
1988	18.7	18.6
1989	18.8	18.6
1990	19	18.5
1991	19.1	18.5
1992	19.3	18.4
1993	19.5	18.4
1994	19.8	18.3
1995	20	18.2
1996	20.4	18.2
1997	20.7	18.1
1998	21	18.1
1999	21.4	18
2000	21.8	18
2001	22.2	18
2002	22.6	17.9
2003	23	17.9
2004	23.4	17.9
2005	23.8	18
2006	24.2	18
2007	24.5	18
2008	24.8	18.1
2009	25.1	18.1
2010	25.4	18.2
2011	25.8	18.3
2012	26.1	18.4
2013	26.3	18.5
2014	26.5	18.6
2015	26.7	18.7
2016	26.9	18.9
2017	27	19.1
2018	27.1	19.2
2019	27.2	19.4
2020	27.3	19.6
2021	27.4	19.8
2022	27.6	20
2023	27.7	20.3
2024	27.8	20.5
2025	27.9	20.7
2026	28	20.9
2027	28	21.2
2028	28	21.4
2029	28	21.7
2030	28	21.9
2031	28	22.2
2032	28	22.4
2033	28	22.7
2034	28.1	23
2035	28.3	23.2
2036	28.5	23.5
2037	28.7	23.8
2038	28.9	24
2039	29.2	24.3
2040	29.5	24.6
2041	29.8	24.8
2042	30.1	25.1
2043	30.5	25.4
2044	30.8	25.7
2045	31.2	25.9
2046	31.6	26.2
2047	31.9	26.5
2048	32.3	26.8
2049	32.7	27.1
2050	33	27.3

In 1960, the median age in Mongolia was 22.8 years compared to 21.1 years in Sierra Leone. As of 2024, the median age had changed to 27.8 years in Mongolia and to 20.5 years in Sierra Leone.

According to United Nations projections, the median age in Mongolia is expected to increased to around 33 years by 2050 compared to 27.3 years in Sierra Leone. The aging demographics forecast is based on previous years' birth rates and increasing life expectancy.

Demographic pyramid: age and gender distribution

Table

Age range	Share of population
	Mongolia		Sierra Leone
	Male	Female	Male	Female
0-4	5.01%	4.81%	6.85%	6.72%
5-9	5.91%	5.56%	6.32%	6.24%
10-14	5.63%	5.27%	6.01%	5.94%
15-19	4.04%	3.77%	5.48%	5.41%
20-24	3.2%	3%	4.9%	4.84%
25-29	3.46%	3.29%	4.17%	4.17%
30-34	3.92%	3.74%	3.52%	3.5%
35-39	4.17%	4.05%	2.96%	2.95%
40-44	3.4%	3.35%	2.45%	2.45%
45-49	3%	3.04%	1.99%	2.03%
50-54	2.5%	2.71%	1.59%	1.66%
55-59	2.03%	2.39%	1.25%	1.34%
60-64	1.59%	2.02%	0.94%	1.05%
65-69	0.99%	1.41%	0.65%	0.77%
70-74	0.48%	0.76%	0.4%	0.51%
75-79	0.28%	0.48%	0.24%	0.31%
80+	0.25%	0.49%	0.15%	0.22%

The chart above is a variation of a population pyramid and represents a comparison of age and gender structure. Mongolia has average demographic potential with 60.6% of people in the 0-34 age group compared to 74.1% and similar potential in Sierra Leone.

Age dependency chart

Table

Year	Age dependency ratio
	Mongolia			Sierra Leone
	Total	Young	Old	Total	Young	Old
1960	77.8%	67.7%	10.1%	72.5%	66%	6.59%
1961	81.1%	70.4%	10.8%	72.8%	66.1%	6.68%
1962	84.5%	73%	11.4%	73.1%	66.3%	6.77%
1963	87.5%	75.8%	11.8%	73.7%	66.9%	6.87%
1964	90.6%	78.8%	11.7%	74.8%	67.9%	6.97%
1965	93.9%	82.1%	11.7%	75.9%	68.8%	7.07%
1966	97.2%	85.4%	11.8%	76.7%	69.6%	7.15%
1967	100.4%	88.5%	11.9%	77.6%	70.4%	7.23%
1968	103.2%	91.3%	12%	78.5%	71.2%	7.31%
1969	105%	93%	12%	79.3%	72%	7.38%
1970	105.7%	93.8%	11.9%	80.1%	72.7%	7.44%
1971	105.9%	94.2%	11.7%	80.8%	73.3%	7.49%
1972	105.7%	94.3%	11.5%	81.5%	73.9%	7.54%
1973	105.1%	93.9%	11.2%	82.1%	74.5%	7.57%
1974	104.1%	93.2%	11%	82.7%	75.1%	7.61%
1975	102.8%	92.1%	10.7%	83.3%	75.7%	7.63%
1976	101.3%	90.9%	10.4%	83.8%	76.2%	7.65%
1977	99.6%	89.5%	10.1%	84.3%	76.6%	7.66%
1978	97.7%	87.9%	9.78%	84.7%	77%	7.67%
1979	95.8%	86.3%	9.52%	85.1%	77.4%	7.68%
1980	94.1%	84.8%	9.3%	85.4%	77.7%	7.67%
1981	92.5%	83.5%	9.06%	85.7%	78.1%	7.67%
1982	91%	82.2%	8.82%	86.1%	78.4%	7.66%
1983	89.6%	81%	8.58%	86.4%	78.7%	7.64%
1984	88.4%	80%	8.35%	86.7%	79.1%	7.62%
1985	87.3%	79.1%	8.13%	87%	79.4%	7.6%
1986	86.3%	78.4%	7.91%	87.3%	79.7%	7.57%
1987	85.5%	77.8%	7.69%	87.6%	80%	7.54%
1988	84.8%	77.3%	7.44%	87.9%	80.4%	7.5%
1989	83.8%	76.6%	7.21%	88.1%	80.6%	7.46%
1990	82.4%	75.4%	6.99%	88.2%	80.8%	7.41%
1991	80.9%	74.1%	6.77%	88.4%	81%	7.36%
1992	79.1%	72.6%	6.56%	88.6%	81.3%	7.3%
1993	77.3%	71%	6.37%	88.7%	81.5%	7.23%
1994	75.6%	69.3%	6.21%	88.9%	81.8%	7.17%
1995	73.8%	67.7%	6.08%	89.1%	82%	7.09%
1996	72%	66%	5.98%	89.3%	82.3%	7.02%
1997	70.1%	64.2%	5.88%	89.4%	82.5%	6.95%
1998	68%	62.2%	5.78%	89.6%	82.7%	6.87%
1999	65.6%	59.9%	5.67%	89.9%	83.1%	6.8%
2000	62.9%	57.3%	5.58%	90%	83.3%	6.73%
2001	60.1%	54.5%	5.52%	90.1%	83.4%	6.66%
2002	57.3%	51.8%	5.47%	90%	83.5%	6.59%
2003	54.7%	49.3%	5.42%	89.9%	83.4%	6.53%
2004	52.3%	46.9%	5.4%	89.7%	83.2%	6.46%
2005	50.3%	44.9%	5.41%	89.4%	83%	6.4%
2006	48.7%	43.2%	5.44%	89%	82.6%	6.34%
2007	47.5%	42%	5.48%	88.5%	82.2%	6.28%
2008	46.7%	41.2%	5.51%	88%	81.8%	6.22%
2009	46.4%	40.9%	5.54%	87.5%	81.3%	6.18%
2010	46.5%	40.9%	5.57%	86.9%	80.7%	6.14%
2011	46.6%	41.1%	5.57%	86.2%	80.1%	6.09%
2012	46.9%	41.3%	5.57%	85.4%	79.3%	6.03%
2013	47.6%	42%	5.6%	84.3%	78.4%	5.95%
2014	48.7%	43%	5.66%	83.1%	77.3%	5.83%
2015	50.1%	44.3%	5.76%	81.8%	76%	5.73%
2016	51.7%	45.8%	5.89%	80.4%	74.8%	5.67%
2017	53.5%	47.4%	6.07%	79.1%	73.5%	5.61%
2018	55.4%	49.1%	6.29%	77.7%	72.2%	5.56%
2019	57.4%	50.9%	6.57%	76.5%	70.9%	5.53%
2020	58.9%	52.1%	6.84%	75.3%	69.8%	5.51%
2021	59.6%	52.6%	7.08%	74.1%	68.6%	5.49%
2022	60%	52.6%	7.39%	72.9%	67.4%	5.49%
2023	60%	52.2%	7.78%	71.6%	66.1%	5.5%
2024	59.6%	51.4%	8.2%	70.4%	64.9%	5.53%

Age dependency is the ratio of people not in the labor force (children under 15 and adults 64+) to people aged 15 to 64.

Age dependency in Mongolia increased from 52.3% to 59.6% between 2004 and 2024.

In Sierra Leone, the ratio of dependent people decreased from 89.7% to 70.4% between 2004 and 2024 with a decreased share of young people and a decreased proportion of people aged 65+.

Working age demographic

Table

Year	Working age population share
	Mongolia	Sierra Leone
1960	56.3%	58%
1961	55.2%	57.9%
1962	54.2%	57.8%
1963	53.3%	57.6%
1964	52.5%	57.2%
1965	51.6%	56.9%
1966	50.7%	56.6%
1967	49.9%	56.3%
1968	49.2%	56%
1969	48.8%	55.8%
1970	48.6%	55.5%
1971	48.6%	55.3%
1972	48.6%	55.1%
1973	48.7%	54.9%
1974	49%	54.7%
1975	49.3%	54.6%
1976	49.7%	54.4%
1977	50.1%	54.3%
1978	50.6%	54.1%
1979	51.1%	54%
1980	51.5%	53.9%
1981	51.9%	53.8%
1982	52.4%	53.7%
1983	52.7%	53.7%
1984	53.1%	53.6%
1985	53.4%	53.5%
1986	53.7%	53.4%
1987	53.9%	53.3%
1988	54.1%	53.2%
1989	54.4%	53.2%
1990	54.8%	53.1%
1991	55.3%	53.1%
1992	55.8%	53%
1993	56.4%	53%
1994	57%	52.9%
1995	57.5%	52.9%
1996	58.1%	52.8%
1997	58.8%	52.8%
1998	59.5%	52.7%
1999	60.4%	52.7%
2000	61.4%	52.6%
2001	62.5%	52.6%
2002	63.6%	52.6%
2003	64.7%	52.6%
2004	65.7%	52.7%
2005	66.5%	52.8%
2006	67.3%	52.9%
2007	67.8%	53%
2008	68.1%	53.2%
2009	68.3%	53.3%
2010	68.3%	53.5%
2011	68.2%	53.7%
2012	68.1%	53.9%
2013	67.8%	54.2%
2014	67.3%	54.6%
2015	66.6%	55%
2016	65.9%	55.4%
2017	65.1%	55.8%
2018	64.3%	56.3%
2019	63.5%	56.7%
2020	62.9%	57%
2021	62.6%	57.4%
2022	62.5%	57.8%
2023	62.5%	58.3%
2024	62.7%	58.7%
2025	63%	59.1%
2026	63.4%	59.5%
2027	63.8%	59.9%
2028	64.4%	60.2%
2029	65%	60.6%
2030	65.7%	60.9%
2031	66.3%	61.2%
2032	66.8%	61.6%
2033	67.1%	61.9%
2034	67.4%	62.2%
2035	67.6%	62.5%
2036	67.7%	62.9%
2037	67.7%	63.2%
2038	67.6%	63.5%
2039	67.4%	63.8%
2040	67.2%	64.1%
2041	66.9%	64.3%
2042	66.6%	64.6%
2043	66.2%	64.8%
2044	65.9%	65.1%
2045	65.5%	65.3%
2046	65.2%	65.5%
2047	64.9%	65.7%
2048	64.6%	65.9%
2049	64.4%	66.1%
2050	64.1%	66.3%

Between 2004 and 2024, the share of working-age demographics aged 15-64 changed from 65.7% to 62.7% in Mongolia and from 52.7% to 58.7% in Sierra Leone.

Share of young demographic (0-14 years old)

Table

Year	Share of people 0-14 years old
	Mongolia	Sierra Leone
1960	38.1%	38.2%
1961	38.8%	38.3%
1962	39.6%	38.3%
1963	40.4%	38.5%
1964	41.4%	38.8%
1965	42.4%	39.1%
1966	43.3%	39.4%
1967	44.2%	39.6%
1968	44.9%	39.9%
1969	45.4%	40.1%
1970	45.6%	40.3%
1971	45.8%	40.6%
1972	45.8%	40.7%
1973	45.8%	40.9%
1974	45.6%	41.1%
1975	45.4%	41.3%
1976	45.2%	41.4%
1977	44.8%	41.6%
1978	44.5%	41.7%
1979	44.1%	41.8%
1980	43.7%	41.9%
1981	43.3%	42%
1982	43%	42.1%
1983	42.7%	42.2%
1984	42.5%	42.3%
1985	42.3%	42.5%
1986	42.1%	42.6%
1987	42%	42.7%
1988	41.8%	42.8%
1989	41.7%	42.9%
1990	41.4%	42.9%
1991	41%	43%
1992	40.5%	43.1%
1993	40%	43.2%
1994	39.5%	43.3%
1995	39%	43.4%
1996	38.4%	43.5%
1997	37.8%	43.5%
1998	37%	43.6%
1999	36.2%	43.7%
2000	35.2%	43.8%
2001	34.1%	43.9%
2002	32.9%	43.9%
2003	31.8%	43.9%
2004	30.8%	43.9%
2005	29.9%	43.8%
2006	29.1%	43.7%
2007	28.5%	43.6%
2008	28.1%	43.5%
2009	27.9%	43.4%
2010	27.9%	43.2%
2011	28%	43%
2012	28.1%	42.8%
2013	28.5%	42.5%
2014	28.9%	42.2%
2015	29.5%	41.8%
2016	30.2%	41.4%
2017	30.9%	41%
2018	31.6%	40.6%
2019	32.3%	40.2%
2020	32.8%	39.8%
2021	32.9%	39.4%
2022	32.9%	39%
2023	32.6%	38.5%
2024	32.2%	38.1%
2025	31.6%	37.7%
2026	30.9%	37.2%
2027	30.1%	36.8%
2028	29.2%	36.3%
2029	28.2%	35.9%
2030	27.3%	35.5%
2031	26.3%	35.2%
2032	25.6%	34.8%
2033	24.9%	34.4%
2034	24.3%	34%
2035	23.8%	33.6%
2036	23.4%	33.2%
2037	23.1%	32.8%
2038	23%	32.4%
2039	22.9%	32%
2040	22.8%	31.6%
2041	22.9%	31.2%
2042	22.9%	30.9%
2043	23%	30.5%
2044	23.1%	30.2%
2045	23.2%	29.8%
2046	23.3%	29.5%
2047	23.4%	29.2%
2048	23.4%	28.8%
2049	23.4%	28.5%
2050	23.3%	28.2%

The share of young people aged below 15 is 32.2% in Mongolia and 38.1% in Sierra Leone. Birth rates in Mongolia compared to Sierra Leone .

Share of old population (65+)

Table

Year	Share of population 65+ years old
	Mongolia	Sierra Leone
1960	5.69%	3.82%
1961	5.94%	3.87%
1962	6.2%	3.91%
1963	6.27%	3.95%
1964	6.16%	3.99%
1965	6.06%	4.02%
1966	5.98%	4.05%
1967	5.92%	4.07%
1968	5.89%	4.09%
1969	5.85%	4.11%
1970	5.78%	4.13%
1971	5.69%	4.14%
1972	5.59%	4.15%
1973	5.48%	4.16%
1974	5.37%	4.16%
1975	5.27%	4.16%
1976	5.16%	4.16%
1977	5.06%	4.16%
1978	4.95%	4.15%
1979	4.86%	4.15%
1980	4.79%	4.14%
1981	4.71%	4.13%
1982	4.62%	4.12%
1983	4.53%	4.1%
1984	4.43%	4.08%
1985	4.34%	4.06%
1986	4.25%	4.04%
1987	4.14%	4.02%
1988	4.03%	3.99%
1989	3.92%	3.97%
1990	3.83%	3.94%
1991	3.75%	3.91%
1992	3.66%	3.87%
1993	3.59%	3.83%
1994	3.54%	3.79%
1995	3.5%	3.75%
1996	3.48%	3.71%
1997	3.46%	3.67%
1998	3.44%	3.62%
1999	3.42%	3.58%
2000	3.43%	3.54%
2001	3.45%	3.5%
2002	3.48%	3.47%
2003	3.51%	3.44%
2004	3.55%	3.41%
2005	3.6%	3.38%
2006	3.66%	3.35%
2007	3.71%	3.33%
2008	3.76%	3.31%
2009	3.79%	3.3%
2010	3.8%	3.28%
2011	3.8%	3.27%
2012	3.79%	3.26%
2013	3.79%	3.23%
2014	3.81%	3.19%
2015	3.84%	3.15%
2016	3.89%	3.14%
2017	3.95%	3.13%
2018	4.05%	3.13%
2019	4.17%	3.14%
2020	4.31%	3.14%
2021	4.43%	3.15%
2022	4.62%	3.18%
2023	4.86%	3.21%
2024	5.14%	3.24%
2025	5.43%	3.28%
2026	5.74%	3.33%
2027	6.06%	3.38%
2028	6.39%	3.43%
2029	6.71%	3.49%
2030	7.04%	3.56%
2031	7.36%	3.62%
2032	7.67%	3.69%
2033	7.97%	3.76%
2034	8.27%	3.83%
2035	8.56%	3.91%
2036	8.84%	3.99%
2037	9.13%	4.07%
2038	9.41%	4.15%
2039	9.69%	4.24%
2040	9.96%	4.33%
2041	10.2%	4.43%
2042	10.5%	4.53%
2043	10.8%	4.64%
2044	11%	4.75%
2045	11.3%	4.86%
2046	11.5%	4.98%
2047	11.7%	5.1%
2048	12%	5.23%
2049	12.3%	5.36%
2050	12.6%	5.5%

The share of older people aged 65 and over is 5.14% in Mongolia and 3.24% in Sierra Leone. Life expectancy in Mongolia compared to Sierra Leone .