Yamaguchi: population and official figures
In depth
- Economy, jobs and prices in Yamaguchi: Taxable income for municipal resident tax in Yamaguchi averaged 3.43 million yen per taxpayer in fiscal 2024, 75th lowest of 262 cities and below the national average of 3,933.7 thousand yen per taxpayer. It is income before deductions, so it is not take-home pay.
- Health in Yamaguchi: Yamaguchi had 13 general hospitals (hospitals other than psychiatric ones) in 2023, or 6.70 per 100,000 residents, 71st highest of 262 cities, above the national figure (5.60).
- Education in Yamaguchi: Yamaguchi had 32 primary schools with 9,694 pupils and 722 full-time teachers in May 2024.
- Poverty and living standards in Yamaguchi: 39.5% of private households in Yamaguchi were one-person households at the 2020 census (34,320), 59th highest of 262 cities, above the national figure (38.0%).
- Government budget and revenue in Yamaguchi: The municipal government of Yamaguchi took in 91.2 billion yen in fiscal 2022 (final accounts), 470,196 yen per resident, 125th highest of 262 cities.
What is the population of Yamaguchi?
Yamaguchi had 193,966 residents at the 1 October 2020 census (city proper). That is 119th highest of 262 cities. The count includes foreign residents.
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyHow big is Yamaguchi and how densely populated is it?
Yamaguchi covers 1,023.22 square kilometres (2024), of which 249.35 is habitable land. That is 190 people per square kilometre of total area at the 2020 census, 13th lowest of 262 for density.
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyIs the population of Yamaguchi growing or shrinking?
The basic resident register recorded 185,982 residents in Yamaguchi in 2024, 4.1% fewer than the 2020 census count (all municipalities together: -1.4%). The register and the census are counted differently, so the change is indicative.
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyHow many children live in Yamaguchi?
12.5% of residents of Yamaguchi were under 15 (24,166 children) and 56.6% were aged 15 to 64 at the 2020 census; nationally the shares were 11.9% and 57.8%.
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyHow many households are there in Yamaguchi?
Yamaguchi had 87,094 households at the 2020 census, of which 86,858 were private households; that is about 2.23 residents per household (residents divided by all households).
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyHow many foreigners live in Yamaguchi?
1,547 foreign nationals lived in Yamaguchi at the 2020 census, 0.8% of residents, below the national figure (1.9%).
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyHow many babies are born in Yamaguchi each year?
Yamaguchi recorded 1,152 births and 2,497 deaths in 2023, a natural decrease of 1,345. That is 5.9 births and 12.9 deaths per 1,000 residents (national: 5.8 and 12.5). Births are by Japanese nationals registered in the city.
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyAre more people moving into or out of Yamaguchi?
In 2024, 6,860 people moved into Yamaguchi from other municipalities and 7,076 moved out, a net loss of 216 (moves within the city and from abroad are not counted).
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyHow many marriages are there in Yamaguchi each year?
Yamaguchi registered 623 marriages and 246 divorces by Japanese nationals in 2023, or 3.2 marriages per 1,000 residents.
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyWho runs Yamaguchi?
In Japan, cities and towns are run by municipalities: Mayor and municipal assembly both directly elected for four years. Primary and lower secondary schools, welfare, waste, water, residents' registers, disaster response. Large 'designated cities' (20) take on prefectural tasks and are divided into administrative wards whose heads are officials, not elected.
How local power works in Japan
Cities of a similar size in Japan
- Kure 214,592
- Isesaki 211,850
- Nishitokyo 207,388
- Matsue 203,616
- Nagareyama 199,849
- Yachiyo 199,498
- Kodaira 198,739
- Itami 198,138
- Higashihiroshima 196,608
- Suzuka 195,670
- Mitaka 195,391
- Kumagaya 194,415
- Kishiwada 190,658
- Hino 190,435
- Kofu 189,591
- Numazu 189,386
Up a level: all cities in Japan · Japan · government and power
Sources
- Statistics Bureau of Japan, Ministry of Internal Affairs and Communications: Statistical Observations of Municipalities 2026 (social and demographic statistics, city, ward, town and village data), read 28 October 2026 · saved copy (SHA-256 2cb3d8c51aa1…)
- Statistics Bureau of Japan, Ministry of Internal Affairs and Communications: Statistical Observations of Prefectures 2026 (national figures, "All Japan" row), read 28 October 2026 · saved copy (SHA-256 b69774a5f40c…)
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