Oita大分県
Nakatsu 中津市
Data last updated:
Nakatsu, Oita, Japan has a population of 80,096 (2025 national census). IPSS projections estimate 79,075 by 2030 and 69,547 by 2050 (a decrease of about 16.1% from 2020), with the share of residents aged 65+ rising from 30.4% in 2020 to 35.8%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
80,096
2030
(Projection)
79,075
▼ -4.6%
2040
(Projection)
74,600
▼ -10.0%
2050
(Projection)
69,547
▼ -16.1%
Change vs. 2020 census
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Other municipalities in Oita (大分県)
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.
Nakatsu 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 | 85,963 | ▲ +3.7% | Census |
| 1985 | 87,736 | ▲ +5.9% | Census |
| 1990 | 86,965 | ▲ +5.0% | Census |
| 1995 | 86,679 | ▲ +4.6% | Census |
| 2000 | 85,617 | ▲ +3.3% | Census |
| 2005 | 84,368 | ▲ +1.8% | Census |
| 2010 | 84,312 | ▲ +1.7% | Census |
| 2015 | 83,965 | ▲ +1.3% | Census |
| 2020 | 82,863 | — | Census |
| 2025 | 80,096 | ▼ -3.3% | Census |
| 2030 | 79,075 | ▼ -4.6% | Projection |
| 2035 | 76,884 | ▼ -7.2% | Projection |
| 2040 | 74,600 | ▼ -10.0% | Projection |
| 2045 | 72,092 | ▼ -13.0% | Projection |
| 2050 | 69,547 | ▼ -16.1% | Projection |
About Nakatsu
Overview
Nakatsu (中津市) is a municipality in Oita, Japan, with a population of 80,096 as of 2025.
Population Projection of Nakatsu
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Nakatsu's population is expected to reach 79,075 by 2030 (-4.6%), 74,600 by 2040 (-10.0%), and 69,547 by 2050 (-16.1%). A modest population change is expected.
Aging Rate of Nakatsu
The aging rate (percentage of residents aged 65 and over) is 30.4% as of 2020 and is projected to rise to 35.8% by 2050. The aging rate will remain below the most severe Japanese averages.
National Comparison
Nakatsu's demographic trajectory is similar to the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1457 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1562 out of 1903 nationwide.
- Population size: Ranked #494 out of 1917 nationwide.
- Related: National rankings / All municipalities in Oita
Earnings in Oita (大分県): Average salary in Oita (大分県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure