Onomichi: population and official figures
In depth
- Economy, jobs and prices in Onomichi: Taxable income for municipal resident tax in Onomichi averaged 3.34 million yen per taxpayer in fiscal 2024, 54th 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 Onomichi: Onomichi had 10 general hospitals (hospitals other than psychiatric ones) in 2023, or 7.62 per 100,000 residents, 48th highest of 262 cities, above the national figure (5.60).
- Education in Onomichi: Onomichi had 24 primary schools with 5,468 pupils and 473 full-time teachers in May 2024.
- Poverty and living standards in Onomichi: 34.7% of private households in Onomichi were one-person households at the 2020 census (19,904), 118th lowest of 262 cities, below the national figure (38.0%).
- Government budget and revenue in Onomichi: The municipal government of Onomichi took in 65.5 billion yen in fiscal 2022 (final accounts), 499,527 yen per resident, 85th highest of 262 cities.
What is the population of Onomichi?
Onomichi had 131,170 residents at the 1 October 2020 census (city proper). That is 72nd lowest of 262 cities. The count includes foreign residents.
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyHow big is Onomichi and how densely populated is it?
Onomichi covers 284.89 square kilometres (2024), of which 140.35 is habitable land. That is 460 people per square kilometre of total area at the 2020 census, 58th lowest of 262 for density.
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyIs the population of Onomichi growing or shrinking?
The basic resident register recorded 126,396 residents in Onomichi in 2024, 3.6% 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 Onomichi?
10.9% of residents of Onomichi were under 15 (14,313 children) and 52.1% 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 Onomichi?
Onomichi had 57,519 households at the 2020 census, of which 57,379 were private households; that is about 2.28 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 Onomichi?
2,718 foreign nationals lived in Onomichi at the 2020 census, 2.1% of residents, above the national figure (1.9%).
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyHow many babies are born in Onomichi each year?
Onomichi recorded 516 births and 2,226 deaths in 2023, a natural decrease of 1,710. That is 3.9 births and 17.0 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 Onomichi?
In 2024, 3,126 people moved into Onomichi from other municipalities and 3,844 moved out, a net loss of 718 (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 Onomichi each year?
Onomichi registered 306 marriages and 173 divorces by Japanese nationals in 2023, or 2.3 marriages per 1,000 residents.
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyWho runs Onomichi?
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
- Koga 139,344
- Kuwana 138,613
- Shunan 137,540
- Minoh 136,868
- Yaizu 136,845
- Ebina 136,516
- Kisarazu 136,166
- Inazawa 134,751
- Isahaya 133,852
- Ome 133,535
- Narita 132,906
- Zama 132,325
- Abiko 130,510
- Kokubunji 129,242
- Iwakuni 129,125
- Fujinomiya 128,105
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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