Miyazaki宮崎県
Nichinan 日南市
Data last updated:
Nichinan, Miyazaki, Japan has a population of 45,850 (2025 national census). IPSS projections estimate 42,753 by 2030 and 29,534 by 2050 (a decrease of about 41.9% from 2020), with the share of residents aged 65+ rising from 38.6% in 2020 to 47.6%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025Census
45,850
2030Projection
42,753
▼ -15.9%
2040Projection
35,747
▼ -29.7%
2050Projection
29,534
▼ -41.9%
Change vs. 2020 census
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Other municipalities in Miyazaki (宮崎県)
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.
Nichinan 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 | 72,785 | ▲ +43.1% | Census |
| 1985 | 71,535 | ▲ +40.7% | Census |
| 1990 | 68,176 | ▲ +34.1% | Census |
| 1995 | 65,809 | ▲ +29.4% | Census |
| 2000 | 63,421 | ▲ +24.7% | Census |
| 2005 | 60,914 | ▲ +19.8% | Census |
| 2010 | 57,689 | ▲ +13.5% | Census |
| 2015 | 54,090 | ▲ +6.4% | Census |
| 2020 | 50,848 | — | Census |
| 2025 | 45,850 | ▼ -9.8% | Census |
| 2030 | 42,753 | ▼ -15.9% | Projection |
| 2035 | 39,152 | ▼ -23.0% | Projection |
| 2040 | 35,747 | ▼ -29.7% | Projection |
| 2045 | 32,534 | ▼ -36.0% | Projection |
| 2050 | 29,534 | ▼ -41.9% | Projection |
About Nichinan
Overview
Nichinan (日南市) is a municipality in Miyazaki, Japan, with a population of 45,850 as of 2025.
Population Projection of Nichinan
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Nichinan's population is expected to reach 42,753 by 2030 (-15.9%), 35,747 by 2040 (-29.7%), and 29,534 by 2050 (-41.9%). A significant population decline is projected over the next three decades.
Aging Rate of Nichinan
The aging rate (percentage of residents aged 65 and over) is 38.6% as of 2020 and is projected to rise to 47.6% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.
National Comparison
Nichinan is experiencing one of the faster rates of population decline in Japan.
National and Prefectural Rank
- Population decline rate: Ranked #658 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #715 out of 1903 nationwide.
- Population size: Ranked #714 out of 1917 nationwide.
- Related: National rankings / All municipalities in Miyazaki
Earnings in Miyazaki (宮崎県): Average salary in Miyazaki (宮崎県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure