Aichi愛知県
Seto 瀬戸市
Data last updated:
Seto, Aichi, Japan has a population of 123,379 (2025 national census). IPSS projections estimate 120,231 by 2030 and 102,422 by 2050 (a decrease of about 19.9% from 2020), with the share of residents aged 65+ rising from 30.1% in 2020 to 39.2%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025년실적
123,379명
2030년추계
120,231명
▼ -5.9%
2040년추계
110,977명
▼ -13.2%
2050년추계
102,422명
▼ -19.9%
Change vs. 2020 census
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Aichi (愛知県)의 다른 시구정촌
데이터 출처
- 일본 정부 통계 종합 포털(e-Stat)（https://www.e-stat.go.jp/）
- 국립사회보장・인구문제연구소 「일본의 지역별 장래추계인구(레이와 5년 추계)」
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Seto 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 | 120,774 | ▼ -5.5% | Census |
| 1985 | 124,623 | ▼ -2.5% | Census |
| 1990 | 126,340 | ▼ -1.1% | Census |
| 1995 | 129,393 | ▲ +1.3% | Census |
| 2000 | 131,650 | ▲ +3.0% | Census |
| 2005 | 131,925 | ▲ +3.2% | Census |
| 2010 | 132,224 | ▲ +3.5% | Census |
| 2015 | 129,046 | ▲ +1.0% | Census |
| 2020 | 127,792 | — | Census |
| 2025 | 123,379 | ▼ -3.5% | Census |
| 2030 | 120,231 | ▼ -5.9% | Projection |
| 2035 | 115,640 | ▼ -9.5% | Projection |
| 2040 | 110,977 | ▼ -13.2% | Projection |
| 2045 | 106,570 | ▼ -16.6% | Projection |
| 2050 | 102,422 | ▼ -19.9% | Projection |
About Seto
Overview
Seto (瀬戸市) is a municipality in Aichi, Japan, with a population of 123,379 as of 2025.
Population Projection of Seto
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Seto's population is expected to reach 120,231 by 2030 (-5.9%), 110,977 by 2040 (-13.2%), and 102,422 by 2050 (-19.9%). A modest population change is expected.
Aging Rate of Seto
The aging rate (percentage of residents aged 65 and over) is 30.1% as of 2020 and is projected to rise to 39.2% by 2050. The aging rate will remain below the most severe Japanese averages.
National Comparison
Seto's demographic trajectory is similar to the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1353 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1324 out of 1903 nationwide.
- Population size: Ranked #333 out of 1917 nationwide.
- Related: National rankings / All municipalities in Aichi
Aichi (愛知県)의 소득 수준: Aichi (愛知県)의 평균 연봉(연령·성별·기업 규모별)jpsalary / 후생노동성 임금구조 기본통계조사