Saga佐賀県
Karatsu 唐津市
Data last updated:
Karatsu, Saga, Japan has a population of 110,110 (2025 national census). IPSS projections estimate 103,933 by 2030 and 80,289 by 2050 (a decrease of about 31.6% from 2020), with the share of residents aged 65+ rising from 32.8% in 2020 to 41.9%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025Census
110,110
2030Projection
103,933
▼ -11.5%
2040Projection
91,762
▼ -21.8%
2050Projection
80,289
▼ -31.6%
Change vs. 2020 census
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Other municipalities in Saga (佐賀県)
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.
Karatsu 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 | 142,224 | ▲ +21.2% | Census |
| 1985 | 142,057 | ▲ +21.0% | Census |
| 1990 | 139,888 | ▲ +19.2% | Census |
| 1995 | 137,436 | ▲ +17.1% | Census |
| 2000 | 134,144 | ▲ +14.3% | Census |
| 2005 | 131,116 | ▲ +11.7% | Census |
| 2010 | 126,926 | ▲ +8.1% | Census |
| 2015 | 122,785 | ▲ +4.6% | Census |
| 2020 | 117,373 | — | Census |
| 2025 | 110,110 | ▼ -6.2% | Census |
| 2030 | 103,933 | ▼ -11.5% | Projection |
| 2035 | 97,754 | ▼ -16.7% | Projection |
| 2040 | 91,762 | ▼ -21.8% | Projection |
| 2045 | 85,955 | ▼ -26.8% | Projection |
| 2050 | 80,289 | ▼ -31.6% | Projection |
About Karatsu
Overview
Karatsu (唐津市) is a municipality in Saga, Japan, with a population of 110,110 as of 2025.
Population Projection of Karatsu
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Karatsu's population is expected to reach 103,933 by 2030 (-11.5%), 91,762 by 2040 (-21.8%), and 80,289 by 2050 (-31.6%). A significant population decline is projected over the next three decades.
Aging Rate of Karatsu
The aging rate (percentage of residents aged 65 and over) is 32.8% as of 2020 and is projected to rise to 41.9% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.
National Comparison
Karatsu's population decline rate exceeds the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1006 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1105 out of 1903 nationwide.
- Population size: Ranked #376 out of 1917 nationwide.
- Related: National rankings / All municipalities in Saga
Earnings in Saga (佐賀県): Average salary in Saga (佐賀県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure