Kumamoto熊本県
Nankan 南関町
Data last updated:
Nankan, Kumamoto, Japan has a population of 8,068 (2025 national census). IPSS projections estimate 7,629 by 2030 and 5,179 by 2050 (a decrease of about 42.3% from 2020), with the share of residents aged 65+ rising from 39.4% in 2020 to 46.8%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
8,068
2030
(Projection)
7,629
▼ -15.0%
2040
(Projection)
6,343
▼ -29.4%
2050
(Projection)
5,179
▼ -42.3%
Change vs. 2020 census
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Other municipalities in Kumamoto (熊本県)
Data Sources
- Portal Site of Official Statistics of Japan (e-Stat)（https://www.e-stat.go.jp/）
- National Institute of Population and Social Security Research (IPSS), Regional Population Projections (2023 ed.)
* This service uses the e-Stat API but its content is not guaranteed by the Japanese government.
Nankan Population Table (1980–2050)
Population by year: national census results (restated to current municipal boundaries) and IPSS (2023) projections based on the 2020 census.
| Year | Population | vs 2020 | Type |
|---|---|---|---|
| 1980 | 12,498 | ▲ +39.2% | Census |
| 1985 | 12,478 | ▲ +39.0% | Census |
| 1990 | 12,247 | ▲ +36.4% | Census |
| 1995 | 12,076 | ▲ +34.5% | Census |
| 2000 | 11,821 | ▲ +31.7% | Census |
| 2005 | 11,203 | ▲ +24.8% | Census |
| 2010 | 10,564 | ▲ +17.7% | Census |
| 2015 | 9,786 | ▲ +9.0% | Census |
| 2020 | 8,979 | — | Census |
| 2025 | 8,068 | ▼ -10.1% | Census |
| 2030 | 7,629 | ▼ -15.0% | Projection |
| 2035 | 6,970 | ▼ -22.4% | Projection |
| 2040 | 6,343 | ▼ -29.4% | Projection |
| 2045 | 5,749 | ▼ -36.0% | Projection |
| 2050 | 5,179 | ▼ -42.3% | Projection |
About Nankan
Overview
Nankan (南関町) is a municipality in Kumamoto, Japan, with a population of 8,068 as of 2025.
Population Projection of Nankan
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Nankan's population is expected to reach 7,629 by 2030 (-15.0%), 6,343 by 2040 (-29.4%), and 5,179 by 2050 (-42.3%). A significant population decline is projected over the next three decades.
Aging Rate of Nankan
The aging rate (percentage of residents aged 65 and over) is 39.4% as of 2020 and is projected to rise to 46.8% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.
National Comparison
Nankan is experiencing one of the faster rates of population decline in Japan.
National and Prefectural Rank
- Population decline rate: Ranked #643 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #769 out of 1903 nationwide.
- Population size: Ranked #1424 out of 1917 nationwide.
- Related: National rankings / All municipalities in Kumamoto
Earnings in Kumamoto (熊本県): Average salary in Kumamoto (熊本県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure