Saitama埼玉県
Nishi さいたま市西区
Data last updated:
Nishi, Saitama, Japan has a population of 94,091 (2025 national census). IPSS projections estimate 98,659 by 2030 and 97,438 by 2050 (an increase of about 4.2% from 2020), with the share of residents aged 65+ rising from 27.9% in 2020 to 33.5%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
94,091
2030
(Projection)
98,659
▲ +5.5%
2040
(Projection)
98,636
▲ +5.5%
2050
(Projection)
97,438
▲ +4.2%
Change vs. 2020 census
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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.
Nishi 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 | 82,342 | ▼ -11.9% | Census |
| 2010 | 84,029 | ▼ -10.1% | Census |
| 2015 | 87,146 | ▼ -6.8% | Census |
| 2020 | 93,499 | — | Census |
| 2025 | 94,091 | ▲ +0.6% | Census |
| 2030 | 98,659 | ▲ +5.5% | Projection |
| 2035 | 98,871 | ▲ +5.7% | Projection |
| 2040 | 98,636 | ▲ +5.5% | Projection |
| 2045 | 98,084 | ▲ +4.9% | Projection |
| 2050 | 97,438 | ▲ +4.2% | Projection |
About Nishi
Overview
Nishi (さいたま市西区) is a municipality in Saitama, Japan, with a population of 94,091 as of 2025.
Population Projection of Nishi
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Nishi's population is expected to reach 98,659 by 2030 (+5.5%), 98,636 by 2040 (+5.5%), and 97,438 by 2050 (+4.2%). Nishi is among the rare Japanese municipalities projected to see population growth.
Aging Rate of Nishi
The aging rate (percentage of residents aged 65 and over) is 27.9% as of 2020 and is projected to rise to 33.5% by 2050. The aging rate will remain below the most severe Japanese averages.
National Comparison
Nishi's demographic trajectory is similar to the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1847 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1702 out of 1903 nationwide.
- Population size: Ranked #438 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