Sakai: population and official figures
In depth
- Economy, jobs and prices in Sakai: Taxable income for municipal resident tax in Sakai averaged 3.88 million yen per taxpayer in fiscal 2024, 79th highest 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 Sakai: Sakai had 39 general hospitals (hospitals other than psychiatric ones) in 2023, or 4.72 per 100,000 residents, 125th lowest of 262 cities, below the national figure (5.60).
- Education in Sakai: Sakai had 94 primary schools with 39,841 pupils and 2,828 full-time teachers in May 2024.
- Poverty and living standards in Sakai: 37.0% of private households in Sakai were one-person households at the 2020 census (135,073), 92nd highest of 262 cities, below the national figure (38.0%).
- Government budget and revenue in Sakai: The municipal government of Sakai took in 462.9 billion yen in fiscal 2022 (final accounts), 560,341 yen per resident, 44th highest of 262 cities.
What is the population of Sakai?
Sakai had 826,161 residents at the 1 October 2020 census (city proper). That is 15th highest of 262 cities. The count includes foreign residents.
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyHow big is Sakai and how densely populated is it?
Sakai covers 149.83 square kilometres (2024), of which 145.88 is habitable land. That is 5,514 people per square kilometre of total area at the 2020 census, 56th highest of 262 for density.
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyIs the population of Sakai growing or shrinking?
The basic resident register recorded 811,993 residents in Sakai in 2024, 1.7% 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 Sakai?
12.4% of residents of Sakai were under 15 (102,091 children) and 57.1% 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 Sakai?
Sakai had 366,079 households at the 2020 census, of which 365,535 were private households; that is about 2.26 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 Sakai?
12,486 foreign nationals lived in Sakai at the 2020 census, 1.5% 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 Sakai each year?
Sakai recorded 5,081 births and 10,093 deaths in 2023, a natural decrease of 5,012. That is 6.2 births and 12.2 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 Sakai?
In 2024, 33,775 people moved into Sakai from other municipalities and 34,475 moved out, a net loss of 700 (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 Sakai each year?
Sakai registered 3,110 marriages and 1,345 divorces by Japanese nationals in 2023, or 3.8 marriages per 1,000 residents.
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyNotes from the UN table: Excluding diplomatic personnel outside the country and foreign military and civilian personnel and their dependants stationed in the area. For the 2020 census, urban areas are “Densely Inhabited Districts”, defined as areas within a municipality that is composed of a group of contiguous Basic Unit Blocks, each of which has a population density of 4,000 inhabitants or more per square kilometer and whose total population exceeds 5,000 as of 1 October 2020. The detailed methodological explanation is available at https://www.stat.go.jp/english/data/chiri/did/1-1.html Excluding diplomatic personnel outside the country and foreign military and civilian personnel and their dependants stationed in the area. For the 2020 census, urban areas are “Densely Inhabited Districts”, defined as areas within a municipality that is composed of a group of contiguous Basic Unit Blocks, each of which has a population density of 4,000 inhabitants or more per square kilometer and whose total population exceeds 5,000 as of 1 October 2020. The detailed methodological explanation is available at https://www.stat.go.jp/english/data/chiri/did/1-1.html Excluding diplomatic personnel outside the country and foreign military and civilian personnel and their dependants stationed in the area. For the 2020 census, urban areas are “Densely Inhabited Districts”, defined as areas within a municipality that is composed of a group of contiguous Basic Unit Blocks, each of which has a population density of 4,000 inhabitants or more per square kilometer and whose total population exceeds 5,000 as of 1 October 2020. The detailed methodological explanation is available at https://www.stat.go.jp/english/data/chiri/did/1-1.html Land areas are based on the "Municipalities Area Statistics of Japan, 2015" published by the Geospatial Information Authority of Japan, Ministry of Land, Infrastructure, Transport and Tourism.
Who runs Sakai?
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
- Osaka 2,752,412
- Nagoya 2,332,176
- Sapporo 1,973,395
- Fukuoka 1,612,392
- Kawasaki 1,538,262
- Kobe 1,525,152
- Kyoto 1,463,723
- Saitama 1,324,025
- Hiroshima 1,200,754
- Sendai 1,096,704
- Chiba 974,951
- Kitakyushu 939,029
- Hamamatsu 790,718
- Niigata 789,275
- Kumamoto 738,865
- Sagamihara 725,493
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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