日本人口减少模拟器

Chiba千葉県

Katsuura 勝浦市

Data last updated:

Katsuura, Chiba, Japan has a population of 15,101 (2025 national census). IPSS projections estimate 13,868 by 2030 and 8,815 by 2050 (a decrease of about 47.9% from 2020), with the share of residents aged 65+ rising from 43.1% in 2020 to 54.1%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2025年

(实际)

15,101人

2030年

(预测)

13,868人

▼ -18.1%

2040年

(预测)

11,181人

▼ -33.9%

2050年

(预测)

8,815人

▼ -47.9%

Change vs. 2020 census

老龄化率(65岁以上): 2020年 43.1%→2050年 54.1%

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岁

Chiba (千葉県)的其他市区町村

数据来源

  • 日本政府统计综合窗口(e-Stat)(https://www.e-stat.go.jp/)
  • 国立社会保障・人口问题研究所「日本地区别未来推计人口(令和5年推计)」

※本服务使用e-Stat的API功能,但服务内容不受日本政府保证。

Katsuura Population Table (1980–2050)

Population by year: national census results (restated to current municipal boundaries) and IPSS (2023) projections based on the 2020 census.

YearPopulationvs 2020Type
198025,462▲ +50.4%Census
198525,159▲ +48.6%Census
199025,334▲ +49.7%Census
199524,328▲ +43.7%Census
200023,235▲ +37.3%Census
200522,198▲ +31.1%Census
201020,788▲ +22.8%Census
201519,248▲ +13.7%Census
202016,927—Census
202515,101▼ -10.8%Census
203013,868▼ -18.1%Projection
203512,481▼ -26.3%Projection
204011,181▼ -33.9%Projection
20459,924▼ -41.4%Projection
20508,815▼ -47.9%Projection

About Katsuura

Overview

Katsuura (勝浦市) is a municipality in Chiba, Japan, with a population of 15,101 as of 2025.

Population Projection of Katsuura

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Katsuura's population is expected to reach 13,868 by 2030 (-18.1%), 11,181 by 2040 (-33.9%), and 8,815 by 2050 (-47.9%). A significant population decline is projected over the next three decades.

Aging Rate of Katsuura

The aging rate (percentage of residents aged 65 and over) is 43.1% as of 2020 and is projected to rise to 54.1% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.

National Comparison

Katsuura is experiencing one of the faster rates of population decline in Japan.

National and Prefectural Rank

  • Population decline rate: Ranked #413 out of 1903 municipalities nationwide.
  • Aging rate in 2050: Ranked #316 out of 1903 nationwide.
  • Population size: Ranked #1180 out of 1917 nationwide.
  • Related: National rankings / All municipalities in Chiba

Chiba (千葉県)的收入水平: Chiba (千葉県)的平均年收入(按年龄、性别、企业规模)jpsalary / 厚生劳动省 工资结构基本统计调查

Frequently Asked Questions

Q.What is the current population of Katsuura, Chiba?
A.According to the 2025 national census, Katsuura has a population of 15,101.
Q.What is the population of Katsuura in 2026?
A.Katsuura's population in 2026 is estimated at approximately 14,854. This is an interpolated reference value between the 2025 census (15,101) and the IPSS projection for 2030 (13,868).
Q.What is the projected population of Katsuura in the future?
A.According to IPSS projections, Katsuura's population is expected to be 13,868 in 2030, 11,181 in 2040, and 8,815 in 2050.
Q.What is the population decline rate of Katsuura?
A.Over the 30 years from 2020 to 2050, Katsuura's population is projected to change by -47.9%. The 10-year change is -18.1% and the 20-year change is -33.9%.
Q.Why is the population of Katsuura declining?
A.Nationwide, Japan's population decline is driven by natural decrease (deaths exceeding births) and, in regional municipalities, by net out-migration of young people to major metropolitan areas. In Katsuura, the share of residents aged 65+ is projected to rise from 43.1% to 54.1% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Katsuura?
A.Katsuura's aging rate (percentage aged 65 and over) is 43.1% as of 2020, projected to rise to 54.1% by 2050.
Q.Where does this population data come from?
A.Historical data is sourced from Japan's national census via the e-Stat API (Statistics Bureau of Japan). Future projections are from the National Institute of Population and Social Security Research (IPSS) "Regional Population Projections 2023".
Q.Is the data up to date?
A.Historical data uses national census results through 2025. Future projections use the IPSS 2023 edition, which is based on the 2020 census.

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