Saitama埼玉県
Iwatsuki さいたま市岩槻区
Data last updated:
Iwatsuki, Saitama, Japan has a population of 110,197 (2025 national census). IPSS projections estimate 109,284 by 2030 and 100,456 by 2050 (a decrease of about 10.2% from 2020), with the share of residents aged 65+ rising from 31.2% in 2020 to 37.7%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
110,197
2030
(Projection)
109,284
▼ -2.3%
2040
(Projection)
104,719
▼ -6.3%
2050
(Projection)
100,456
▼ -10.2%
Change vs. 2020 census
Enter your age
See the population of さいたま市岩槻区 when you turn 50, 60, 70 and 80.
Other municipalities in Saitama (埼玉県)
Data Sources
- Portal Site of Official Statistics of Japan (e-Stat)（https://www.e-stat.go.jp/）
- National Institute of Population and Social Security Research (IPSS), Regional Population Projections (2023 ed.)
* This service uses the e-Stat API but its content is not guaranteed by the Japanese government.
Iwatsuki Population Table (2005–2050)
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 |
|---|---|---|---|
| 2005 | 108,976 | ▼ -2.5% | Census |
| 2010 | 111,286 | ▼ -0.5% | Census |
| 2015 | 109,801 | ▼ -1.8% | Census |
| 2020 | 111,815 | — | Census |
| 2025 | 110,197 | ▼ -1.4% | Census |
| 2030 | 109,284 | ▼ -2.3% | Projection |
| 2035 | 107,094 | ▼ -4.2% | Projection |
| 2040 | 104,719 | ▼ -6.3% | Projection |
| 2045 | 102,451 | ▼ -8.4% | Projection |
| 2050 | 100,456 | ▼ -10.2% | Projection |
About Iwatsuki
Overview
Iwatsuki (さいたま市岩槻区) is a municipality in Saitama, Japan, with a population of 110,197 as of 2025.
Population Projection of Iwatsuki
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Iwatsuki's population is expected to reach 109,284 by 2030 (-2.3%), 104,719 by 2040 (-6.3%), and 100,456 by 2050 (-10.2%). A modest population change is expected.
Aging Rate of Iwatsuki
The aging rate (percentage of residents aged 65 and over) is 31.2% as of 2020 and is projected to rise to 37.7% by 2050. The aging rate will remain below the most severe Japanese averages.
National Comparison
Iwatsuki's demographic trajectory is similar to the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1613 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1419 out of 1903 nationwide.
- Population size: Ranked #375 out of 1917 nationwide.
- Related: National rankings / All municipalities in Saitama
Earnings in Saitama (埼玉県): Average salary in Saitama (埼玉県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure