Ota: population and official figures
In depth
- Economy, jobs and prices in Ota: Taxable income for municipal resident tax in Ota averaged 3.56 million yen per taxpayer in fiscal 2024, 106th 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 Ota: Ota had 9 general hospitals (hospitals other than psychiatric ones) in 2023, or 4.04 per 100,000 residents, 90th lowest of 262 cities, below the national figure (5.60).
- Education in Ota: Ota had 25 primary schools with 11,375 pupils and 763 full-time teachers in May 2024.
- Poverty and living standards in Ota: 33.6% of private households in Ota were one-person households at the 2020 census (31,052), 103rd lowest of 262 cities, below the national figure (38.0%).
- Government budget and revenue in Ota: The municipal government of Ota took in 93.2 billion yen in fiscal 2022 (final accounts), 417,992 yen per resident, 79th lowest of 262 cities.
What is the population of Ota?
Ota had 223,014 residents at the 1 October 2020 census (city proper). That is 106th highest of 262 cities. The count includes foreign residents.
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyHow big is Ota and how densely populated is it?
Ota covers 175.54 square kilometres (2024), of which 166.57 is habitable land. That is 1,270 people per square kilometre of total area at the 2020 census, 126th lowest of 262 for density.
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyIs the population of Ota growing or shrinking?
The basic resident register recorded 223,075 residents in Ota in 2024, about the same as 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 Ota?
13.3% of residents of Ota were under 15 (29,597 children) and 59.1% 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 Ota?
Ota had 92,531 households at the 2020 census, of which 92,346 were private households; that is about 2.41 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 Ota?
10,992 foreign nationals lived in Ota at the 2020 census, 4.9% 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 Ota each year?
Ota recorded 1,245 births and 2,630 deaths in 2023, a natural decrease of 1,385. That is 5.6 births and 11.8 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 Ota?
In 2024, 8,847 people moved into Ota from other municipalities and 7,831 moved out, a net gain of 1,016 (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 Ota each year?
Ota registered 746 marriages and 360 divorces by Japanese nationals in 2023, or 3.3 marriages per 1,000 residents.
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyWho runs Ota?
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
- Chofu 242,614
- Chigasaki 242,389
- Tsukuba 241,656
- Matsumoto 241,145
- Yamato 239,169
- Saga 233,301
- Kasukabe 229,792
- Neyagawa 229,733
- Ageo 226,940
- Takarazuka 226,432
- Atsugi 223,705
- Hachinohe 223,415
- Kure 214,592
- Isesaki 211,850
- Nishitokyo 207,388
- Matsue 203,616
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…)
Each saved copy is the file exactly as downloaded, kept so the figures can be checked even if the source changes. Report an error.