Yamaguchi population pyramid 2035

Name: Population of Yamaguchi by sex and five-year age group, 2020–2050
Creator: National Institute of Population and Social Security Research

Projection

◀2035▶

Population: 1.1 million
Aged 0–14: 9.4%
Aged 15–64: 53.0%
Aged 65+: 37.6%
Aged 75+: 24.2%
vs 2020: -15.9%

Population by sex and five-year age group (men left, women right). The axis is fixed across 2020–2050 so years can be compared.

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<iframe src="https://pyramid.0xkaz.com/embed/jp/35/2035" title="Yamaguchiの人口ピラミッド（2035年）" loading="lazy" style="width:100%;max-width:720px;aspect-ratio:720/615;border:0"></iframe>
<p><a href="https://pyramid.0xkaz.com/jp/35/2035">Yamaguchiの人口ピラミッド（2035年）</a></p>

Population by sex and age group, 2020–2050 (CSV)

Data may be reused with attribution to the original sources (UN, World Bank, etc.).

Yamaguchi at a glance

In 2035 the population of Yamaguchi is projected to be 1.1 million: 9.4% aged 0–14, 53.0% aged 15–64 and 37.6% aged 65 and over (24.2% aged 75+).

From 1.3 million in 2020 it is projected to shrink by 31.0% to 926,183 in 2050; the share aged 65+ rises from 34.6% to 42.3%.

Among the 47 prefectures, it ranks 19th smallest by population in 2035, 10th largest by the size of the decline from 2020 to 2050, and 14th highest by the share aged 65+ in 2050.

The future of Yamaguchi, compared

	2020	2050	Change	65+ (2020)	65+ (2050)	0–14 (2050)
Yamaguchi	1.3 million	926,183	-31.0%	34.6%	42.3%	9.6%
Japan	126.1 million	104.7 million	-17.0%	28.6%	37.1%	9.9%

Trends 2020–2050

Population

Share aged 65+ (%)

Municipalities of Yamaguchi

Municipality pages are in Japanese.

Municipality	2020	2050	Change	65+ (2050)
下関市	255,051	164,753	-35.4%	44.0%
宇部市	162,570	115,395	-29.0%	41.3%
山口市	193,966	158,010	-18.5%	38.3%
萩市	44,626	21,167	-52.6%	57.5%
防府市	113,979	93,933	-17.6%	37.0%
下松市	55,887	48,535	-13.2%	34.2%
岩国市	129,125	83,047	-35.7%	44.5%
光市	49,798	34,459	-30.8%	43.2%
長門市	32,519	16,197	-50.2%	54.9%
柳井市	30,799	19,224	-37.6%	48.0%
美祢市	23,247	10,902	-53.1%	56.5%
周南市	137,540	91,413	-33.5%	43.8%
山陽小野田市	60,326	40,201	-33.4%	42.1%
周防大島町	14,798	6,363	-57.0%	62.7%
和木町	6,034	4,541	-24.7%	33.1%
上関町	2,342	956	-59.2%	57.7%
田布施町	14,483	8,918	-38.4%	49.8%
平生町	11,914	6,667	-44.0%	53.1%
阿武町	3,055	1,502	-50.8%	58.5%

Municipalities of Yamaguchi with the largest decline (2020→2050)

上関町（-59.2%）
周防大島町（-57.0%）
美祢市（-53.1%）
萩市（-52.6%）
阿武町（-50.8%）
長門市（-50.2%）
平生町（-44.0%）
田布施町（-38.4%）
柳井市（-37.6%）
岩国市（-35.7%）

Source: processed from the National Institute of Population and Social Security Research, Regional Population Projections for Japan (2023) (https://www.ipss.go.jp/pp-shicyoson/j/shicyoson23/t-page.asp). 2020 is the census; 2025 onwards are projections.