Nagaoka: population and official figures
In depth
- Economy, jobs and prices in Nagaoka: Taxable income for municipal resident tax in Nagaoka averaged 3.25 million yen per taxpayer in fiscal 2024, 32nd 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 Nagaoka: Nagaoka had 9 general hospitals (hospitals other than psychiatric ones) in 2023, or 3.37 per 100,000 residents, 57th lowest of 262 cities, below the national figure (5.60).
- Education in Nagaoka: Nagaoka had 55 primary schools with 12,108 pupils and 970 full-time teachers in May 2024.
- Poverty and living standards in Nagaoka: 31.0% of private households in Nagaoka were one-person households at the 2020 census (32,318), 60th lowest of 262 cities, below the national figure (38.0%).
- Government budget and revenue in Nagaoka: The municipal government of Nagaoka took in 144.5 billion yen in fiscal 2022 (final accounts), 541,474 yen per resident, 54th highest of 262 cities.
What is the population of Nagaoka?
Nagaoka had 266,936 residents at the 1 October 2020 census (city proper). That is 81st highest of 262 cities. The count includes foreign residents.
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyHow big is Nagaoka and how densely populated is it?
Nagaoka covers 891.05 square kilometres (2024), of which 453.84 is habitable land. That is 300 people per square kilometre of total area at the 2020 census, 33rd lowest of 262 for density.
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyIs the population of Nagaoka growing or shrinking?
The basic resident register recorded 255,261 residents in Nagaoka in 2024, 4.4% 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 Nagaoka?
11.7% of residents of Nagaoka were under 15 (31,270 children) and 56.0% 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 Nagaoka?
Nagaoka had 104,489 households at the 2020 census, of which 104,168 were private households; that is about 2.55 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 Nagaoka?
2,091 foreign nationals lived in Nagaoka 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 Nagaoka each year?
Nagaoka recorded 1,432 births and 3,930 deaths in 2023, a natural decrease of 2,498. That is 5.4 births and 14.7 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 Nagaoka?
In 2024, 5,507 people moved into Nagaoka from other municipalities and 6,342 moved out, a net loss of 835 (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 Nagaoka each year?
Nagaoka registered 785 marriages and 277 divorces by Japanese nationals in 2023, or 2.9 marriages per 1,000 residents.
Source: Statistics Bureau of Japan, Ministry of Internal Affairs and Communications · saved copyWho runs Nagaoka?
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
- Kasugai 308,681
- Akita 307,672
- Yokkaichi 305,424
- Akashi 303,601
- Kurume 303,316
- Morioka 289,731
- Ibaraki 287,730
- Fukushima 282,693
- Aomori 275,192
- Tsu 274,537
- Mito 270,685
- Ichihara 269,524
- Yao 264,642
- Fuchu 262,790
- Fukui 262,328
- Kakogawa 260,878
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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