Saitama埼玉県
Kawaguchi 川口市
Data last updated:
Kawaguchi, Saitama, Japan has a population of 591,712 (2025 national census). IPSS projections estimate 605,418 by 2030 and 599,667 by 2050 (an increase of about 0.9% from 2020), with the share of residents aged 65+ rising from 23.5% in 2020 to 30.8%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025년
(실적)
591,712명
2030년
(추계)
605,418명
▲ +1.9%
2040년
(추계)
605,949명
▲ +2.0%
2050년
(추계)
599,667명
▲ +0.9%
Change vs. 2020 census
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Saitama (埼玉県)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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Kawaguchi 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 | 435,310 | ▼ -26.7% | Census |
| 1985 | 458,439 | ▼ -22.9% | Census |
| 1990 | 495,120 | ▼ -16.7% | Census |
| 1995 | 504,618 | ▼ -15.1% | Census |
| 2000 | 514,545 | ▼ -13.4% | Census |
| 2005 | 538,434 | ▼ -9.4% | Census |
| 2010 | 561,506 | ▼ -5.5% | Census |
| 2015 | 578,112 | ▼ -2.7% | Census |
| 2020 | 594,274 | — | Census |
| 2025 | 591,712 | ▼ -0.4% | Census |
| 2030 | 605,418 | ▲ +1.9% | Projection |
| 2035 | 606,590 | ▲ +2.1% | Projection |
| 2040 | 605,949 | ▲ +2.0% | Projection |
| 2045 | 603,610 | ▲ +1.6% | Projection |
| 2050 | 599,667 | ▲ +0.9% | Projection |
About Kawaguchi
Overview
Kawaguchi (川口市) is a municipality in Saitama, Japan, with a population of 591,712 as of 2025.
Population Projection of Kawaguchi
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Kawaguchi's population is expected to reach 605,418 by 2030 (+1.9%), 605,949 by 2040 (+2.0%), and 599,667 by 2050 (+0.9%). Kawaguchi is among the rare Japanese municipalities projected to see population growth.
Aging Rate of Kawaguchi
The aging rate (percentage of residents aged 65 and over) is 23.5% as of 2020 and is projected to rise to 30.8% by 2050. The aging rate will remain below the most severe Japanese averages.
National Comparison
Kawaguchi's demographic trajectory is similar to the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1806 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1813 out of 1903 nationwide.
- Population size: Ranked #30 out of 1917 nationwide.
- Related: National rankings / All municipalities in Saitama
Saitama (埼玉県)의 소득 수준: Saitama (埼玉県)의 평균 연봉(연령·성별·기업 규모별)jpsalary / 후생노동성 임금구조 기본통계조사