Niigata新潟県
Sekikawa 関川村
Data last updated:
Sekikawa, Niigata, Japan has a population of 4,396 (2025 national census). IPSS projections estimate 4,024 by 2030 and 2,300 by 2050 (a decrease of about 55.3% from 2020), with the share of residents aged 65+ rising from 43.1% in 2020 to 55.7%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025년
(실적)
4,396명
2030년
(추계)
4,024명
▼ -21.8%
2040년
(추계)
3,096명
▼ -39.8%
2050년
(추계)
2,300명
▼ -55.3%
Change vs. 2020 census
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Niigata (新潟県)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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Sekikawa 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 | 8,638 | ▲ +67.9% | Census |
| 1985 | 8,427 | ▲ +63.8% | Census |
| 1990 | 8,094 | ▲ +57.3% | Census |
| 1995 | 7,781 | ▲ +51.3% | Census |
| 2000 | 7,510 | ▲ +46.0% | Census |
| 2005 | 7,019 | ▲ +36.5% | Census |
| 2010 | 6,438 | ▲ +25.2% | Census |
| 2015 | 5,832 | ▲ +13.4% | Census |
| 2020 | 5,144 | — | Census |
| 2025 | 4,396 | ▼ -14.5% | Census |
| 2030 | 4,024 | ▼ -21.8% | Projection |
| 2035 | 3,543 | ▼ -31.1% | Projection |
| 2040 | 3,096 | ▼ -39.8% | Projection |
| 2045 | 2,684 | ▼ -47.8% | Projection |
| 2050 | 2,300 | ▼ -55.3% | Projection |
About Sekikawa
Overview
Sekikawa (関川村) is a municipality in Niigata, Japan, with a population of 4,396 as of 2025.
Population Projection of Sekikawa
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Sekikawa's population is expected to reach 4,024 by 2030 (-21.8%), 3,096 by 2040 (-39.8%), and 2,300 by 2050 (-55.3%). The town is projected to lose more than half its population over 30 years.
Aging Rate of Sekikawa
The aging rate (percentage of residents aged 65 and over) is 43.1% as of 2020 and is projected to rise to 55.7% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.
National Comparison
Sekikawa is experiencing one of the faster rates of population decline in Japan.
National and Prefectural Rank
- Population decline rate: Ranked #162 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #251 out of 1903 nationwide.
- Population size: Ranked #1627 out of 1917 nationwide.
- Related: National rankings / All municipalities in Niigata
Niigata (新潟県)의 소득 수준: Niigata (新潟県)의 평균 연봉(연령·성별·기업 규모별)jpsalary / 후생노동성 임금구조 기본통계조사