Miyazaki宮崎県
Kobayashi 小林市
Data last updated:
Kobayashi, Miyazaki, Japan has a population of 40,003 (2025 national census). IPSS projections estimate 38,553 by 2030 and 28,975 by 2050 (a decrease of about 33.7% from 2020), with the share of residents aged 65+ rising from 37.2% in 2020 to 44.8%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025Census
40,003
2030Projection
38,553
▼ -11.7%
2040Projection
33,706
▼ -22.8%
2050Projection
28,975
▼ -33.7%
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.
Kobayashi 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 | 52,762 | ▲ +20.8% | Census |
| 1985 | 53,753 | ▲ +23.1% | Census |
| 1990 | 53,480 | ▲ +22.5% | Census |
| 1995 | 52,828 | ▲ +21.0% | Census |
| 2000 | 51,697 | ▲ +18.4% | Census |
| 2005 | 49,820 | ▲ +14.1% | Census |
| 2010 | 48,270 | ▲ +10.5% | Census |
| 2015 | 46,221 | ▲ +5.8% | Census |
| 2020 | 43,670 | — | Census |
| 2025 | 40,003 | ▼ -8.4% | Census |
| 2030 | 38,553 | ▼ -11.7% | Projection |
| 2035 | 36,057 | ▼ -17.4% | Projection |
| 2040 | 33,706 | ▼ -22.8% | Projection |
| 2045 | 31,318 | ▼ -28.3% | Projection |
| 2050 | 28,975 | ▼ -33.7% | Projection |
About Kobayashi
Overview
Kobayashi (小林市) is a municipality in Miyazaki, Japan, with a population of 40,003 as of 2025.
Population Projection of Kobayashi
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Kobayashi's population is expected to reach 38,553 by 2030 (-11.7%), 33,706 by 2040 (-22.8%), and 28,975 by 2050 (-33.7%). A significant population decline is projected over the next three decades.
Aging Rate of Kobayashi
The aging rate (percentage of residents aged 65 and over) is 37.2% as of 2020 and is projected to rise to 44.8% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.
National Comparison
Kobayashi's population decline rate exceeds the national average.
National and Prefectural Rank
- Population decline rate: Ranked #932 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #899 out of 1903 nationwide.
- Population size: Ranked #781 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