일본 인구 감소 시뮬레이터

Kanagawa神奈川県

Seya 横浜市瀬谷区

Data last updated:

Seya, Kanagawa, Japan has a population of 122,671 (2020 national census). IPSS projections estimate 115,024 by 2030 and 97,706 by 2050 (a decrease of about 20.4% from 2020), with the share of residents aged 65+ rising from 28.9% to 41.5%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2020년

(실적)

122,671명

2030년

(추계)

115,024명

▼ -6.2%

2040년

(추계)

106,047명

▼ -13.6%

2050년

(추계)

97,706명

▼ -20.4%

고령화율（65세 이상）: 2020년 28.9%→2050년 41.5%

Kanagawa (神奈川県)의 다른 시구정촌

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Kawasaki川崎市川崎区
Kanagawa (神奈川県)의 모든 시구정촌 보기 →

데이터 출처

  • 일본 정부 통계 종합 포털(e-Stat)（https://www.e-stat.go.jp/）
  • 국립사회보장・인구문제연구소 「일본의 지역별 장래추계인구(레이와 5년 추계)」

※이 서비스는 e-Stat의 API 기능을 사용하고 있으나 서비스 내용은 일본 정부에 의해 보증된 것이 아닙니다.

Seya Population Projection Table (2020–2050)

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

YearPopulationvs 2020Type
2020122,671—Census
2025119,294▼ -2.8%Projection
2030115,024▼ -6.2%Projection
2035110,519▼ -9.9%Projection
2040106,047▼ -13.6%Projection
2045101,759▼ -17.0%Projection
205097,706▼ -20.4%Projection

About Seya

Overview

Seya (横浜市瀬谷区) is a municipality in Kanagawa, Japan, with a population of 122,671 as of 2020.

Population Projection of Seya

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Seya's population is expected to reach 115,024 by 2030 (-6.2%), 106,047 by 2040 (-13.6%), and 97,706 by 2050 (-20.4%). A significant population decline is projected over the next three decades.

Aging Rate of Seya

The aging rate (percentage of residents aged 65 and over) is 28.9% as of 2020 and is projected to rise to 41.5% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.

National Comparison

Seya's population decline rate exceeds the national average.

National and Prefectural Rank

  • Population decline rate: Ranked #1341 out of 1916 municipalities nationwide.
  • Aging rate in 2050: Ranked #1132 out of 1916 nationwide.
  • Population size: Ranked #342 out of 1916 nationwide.
  • Related: National rankings / All municipalities in Kanagawa

Frequently Asked Questions

Q.What is the current population of Seya, Kanagawa?
A.According to the 2020 national census, Seya has a population of 122,671.
Q.What is the population of Seya in 2026?
A.Seya's population in 2026 is estimated at approximately 118,440. This is an interpolated reference value between the 2020 census (122,671) and the IPSS projection for 2030 (115,024).
Q.What is the projected population of Seya in the future?
A.According to IPSS projections, Seya's population is expected to be 115,024 in 2030, 106,047 in 2040, and 97,706 in 2050.
Q.What is the population decline rate of Seya?
A.Over the 30 years from 2020 to 2050, Seya's population is projected to change by -20.4%. The 10-year change is -6.2% and the 20-year change is -13.6%.
Q.Why is the population of Seya 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 Seya, the share of residents aged 65+ is projected to rise from 28.9% to 41.5% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Seya?
A.Seya's aging rate (percentage aged 65 and over) is 28.9% as of 2020, projected to rise to 41.5% 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.

Similar-Sized Municipalities in Kanagawa

Sakae横浜市栄区
120,263▼ -16.1%
Zama座間市
132,180▼ -9.9%
Ebina海老名市
136,581▼ -2.7%
Nishi横浜市西区
104,917▲ +8.9%
Isehara伊勢原市
101,839▼ -14.3%
Naka横浜市中区
151,388▼ -1.0%
Izumi横浜市泉区
152,452▼ -15.3%
Ayase綾瀬市
83,964▼ -13.1%
View all 61 municipalities in Kanagawa →

Municipalities with Similar Trends

Aomori Oowani大鰐町
▼ -58.0%
Gifu Hichisou七宗町
▼ -58.1%
Akita Gojoume五城目町
▼ -58.2%
Gifu Shirakawa白川町
▼ -58.2%
Miyagi Minamisanriku南三陸町
▼ -58.3%
Fukushima Samegawa鮫川村
▼ -58.3%

Share this page

XLINEFacebook