Chiba千葉県
Kujuukuri 九十九里町
Data last updated:
Kujuukuri, Chiba, Japan has a population of 12,877 (2025 national census). IPSS projections estimate 12,025 by 2030 and 7,210 by 2050 (a decrease of about 50.7% from 2020), with the share of residents aged 65+ rising from 40.8% in 2020 to 59.2%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
12,877
2030
(Projection)
12,025
▼ -17.9%
2040
(Projection)
9,493
▼ -35.2%
2050
(Projection)
7,210
▼ -50.7%
Change vs. 2020 census
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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.
Kujuukuri 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 | 18,037 | ▲ +23.2% | Census |
| 1985 | 18,504 | ▲ +26.4% | Census |
| 1990 | 19,300 | ▲ +31.8% | Census |
| 1995 | 20,196 | ▲ +38.0% | Census |
| 2000 | 20,266 | ▲ +38.4% | Census |
| 2005 | 19,009 | ▲ +29.9% | Census |
| 2010 | 18,004 | ▲ +23.0% | Census |
| 2015 | 16,510 | ▲ +12.8% | Census |
| 2020 | 14,639 | — | Census |
| 2025 | 12,877 | ▼ -12.0% | Census |
| 2030 | 12,025 | ▼ -17.9% | Projection |
| 2035 | 10,733 | ▼ -26.7% | Projection |
| 2040 | 9,493 | ▼ -35.2% | Projection |
| 2045 | 8,295 | ▼ -43.3% | Projection |
| 2050 | 7,210 | ▼ -50.7% | Projection |
About Kujuukuri
Overview
Kujuukuri (九十九里町) is a municipality in Chiba, Japan, with a population of 12,877 as of 2025.
Population Projection of Kujuukuri
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Kujuukuri's population is expected to reach 12,025 by 2030 (-17.9%), 9,493 by 2040 (-35.2%), and 7,210 by 2050 (-50.7%). The town is projected to lose more than half its population over 30 years.
Aging Rate of Kujuukuri
The aging rate (percentage of residents aged 65 and over) is 40.8% as of 2020 and is projected to rise to 59.2% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.
National Comparison
Kujuukuri is experiencing one of the faster rates of population decline in Japan.
National and Prefectural Rank
- Population decline rate: Ranked #319 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #133 out of 1903 nationwide.
- Population size: Ranked #1251 out of 1917 nationwide.
- Related: National rankings / All municipalities in Chiba
Earnings in Chiba (千葉県): Average salary in Chiba (千葉県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure