日本人口减少模拟器

Kanagawa神奈川県

Yokosuka 横須賀市

Data last updated:

Yokosuka, Kanagawa, Japan has a population of 388,504 (2020 national census). IPSS projections estimate 350,569 by 2030 and 272,859 by 2050 (a decrease of about 29.8% from 2020), with the share of residents aged 65+ rising from 32.2% to 41.9%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2020年

(实际)

388,504人

2030年

(预测)

350,569人

▼ -9.8%

2040年

(预测)

310,150人

▼ -20.2%

2050年

(预测)

272,859人

▼ -29.8%

老龄化率（65岁以上）: 2020年 32.2%→2050年 41.9%

Kanagawa (神奈川県)的其他市区町村

Yokohama横浜市Tsurumi横浜市鶴見区Kanagawa横浜市神奈川区Nishi横浜市西区Naka横浜市中区Minami横浜市南区Hodogaya横浜市保土ケ谷区Isogo横浜市磯子区Kanazawa横浜市金沢区Kouhoku横浜市港北区Totsuka横浜市戸塚区Kounan横浜市港南区Asahi横浜市旭区Midori横浜市緑区Seya横浜市瀬谷区Sakae横浜市栄区Izumi横浜市泉区Aoba横浜市青葉区Tsuzuki横浜市都筑区Kawasaki川崎市
查看Kanagawa (神奈川県)的所有市区町村 →

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。

Yokosuka Population Projection Table (2020–2050)

Population by year, based on the national census and IPSS (2023) projections.

YearPopulationvs 2020Type
2020388,504—Census
2025370,433▼ -4.7%Projection
2030350,569▼ -9.8%Projection
2035330,338▼ -15.0%Projection
2040310,150▼ -20.2%Projection
2045290,851▼ -25.1%Projection
2050272,859▼ -29.8%Projection

About Yokosuka

Overview

Yokosuka (横須賀市) is a municipality in Kanagawa, Japan, with a population of 388,504 as of 2020.

Population Projection of Yokosuka

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Yokosuka's population is expected to reach 350,569 by 2030 (-9.8%), 310,150 by 2040 (-20.2%), and 272,859 by 2050 (-29.8%). A significant population decline is projected over the next three decades.

Aging Rate of Yokosuka

The aging rate (percentage of residents aged 65 and over) is 32.2% 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

Yokosuka's population decline rate exceeds the national average.

National and Prefectural Rank

  • Population decline rate: Ranked #1064 out of 1916 municipalities nationwide.
  • Aging rate in 2050: Ranked #1100 out of 1916 nationwide.
  • Population size: Ranked #59 out of 1916 nationwide.
  • Related: National rankings / All municipalities in Kanagawa

Frequently Asked Questions

Q.What is the current population of Yokosuka, Kanagawa?
A.According to the 2020 national census, Yokosuka has a population of 388,504.
Q.What is the population of Yokosuka in 2026?
A.Yokosuka's population in 2026 is estimated at approximately 366,460. This is an interpolated reference value between the 2020 census (388,504) and the IPSS projection for 2030 (350,569).
Q.What is the projected population of Yokosuka in the future?
A.According to IPSS projections, Yokosuka's population is expected to be 350,569 in 2030, 310,150 in 2040, and 272,859 in 2050.
Q.What is the population decline rate of Yokosuka?
A.Over the 30 years from 2020 to 2050, Yokosuka's population is projected to change by -29.8%. The 10-year change is -9.8% and the 20-year change is -20.2%.
Q.Why is the population of Yokosuka 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 Yokosuka, the share of residents aged 65+ is projected to rise from 32.2% to 41.9% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Yokosuka?
A.Yokosuka's aging rate (percentage aged 65 and over) is 32.2% as of 2020, projected to rise to 41.9% 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 the 2020 national census results. Future projections use the IPSS 2023 edition. Data will be updated as new census results become available.

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View all 61 municipalities in Kanagawa →

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