Komatsu: population and official figures
In depth
- Economy, jobs and prices in Komatsu: Taxable income for municipal resident tax in Komatsu averaged 3.37 million yen per taxpayer in fiscal 2024, 62nd 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 Komatsu: Komatsu had 8 general hospitals (hospitals other than psychiatric ones) in 2023, or 7.53 per 100,000 residents, 50th highest of 262 cities, above the national figure (5.60).
- Education in Komatsu: Komatsu had 22 primary schools with 5,375 pupils and 420 full-time teachers in May 2024.
- Poverty and living standards in Komatsu: 29.9% of private households in Komatsu were one-person households at the 2020 census (12,319), 44th lowest of 262 cities, below the national figure (38.0%).
- Government budget and revenue in Komatsu: The municipal government of Komatsu took in 55.3 billion yen in fiscal 2022 (final accounts), 520,976 yen per resident, 68th highest of 262 cities.
What is the population of Komatsu?
Komatsu had 106,216 residents at the 1 October 2020 census (city proper). That is 15th lowest of 262 cities. The count includes foreign residents.
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyHow big is Komatsu and how densely populated is it?
Komatsu covers 371.05 square kilometres (2024), of which 111.93 is habitable land. That is 286 people per square kilometre of total area at the 2020 census, 31st lowest of 262 for density.
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyIs the population of Komatsu growing or shrinking?
The basic resident register recorded 105,475 residents in Komatsu in 2024, 0.7% 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 Komatsu?
13.0% of residents of Komatsu were under 15 (13,834 children) and 57.0% 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 Komatsu?
Komatsu had 41,312 households at the 2020 census, of which 41,217 were private households; that is about 2.57 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 Komatsu?
2,271 foreign nationals lived in Komatsu 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 Komatsu each year?
Komatsu recorded 702 births and 1,351 deaths in 2023, a natural decrease of 649. That is 6.6 births and 12.7 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 Komatsu?
In 2024, 3,494 people moved into Komatsu from other municipalities and 3,275 moved out, a net gain of 219 (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 Komatsu each year?
Komatsu registered 408 marriages and 121 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 copyWho runs Komatsu?
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
- Otaru 111,299
- Omuta 111,281
- Kasuga 111,023
- Hakusan 110,408
- Kamagaya 109,932
- Marugame 109,513
- Sanda 109,238
- Habikino 108,736
- Tondabayashi 108,699
- Mishima 107,783
- Tajimi 106,732
- Kiryu 106,445
- Ikeda 104,993
- Saijo 104,791
- Toride 104,524
- Chikushino 103,311
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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