Osaka大阪府
Sakai 堺市堺区
Data last updated:
Sakai, Osaka, Japan has a population of 149,807 (2025 national census). IPSS projections estimate 142,897 by 2030 and 126,830 by 2050 (a decrease of about 14.7% from 2020), with the share of residents aged 65+ rising from 28.2% in 2020 to 34.4%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
149,807
2030
(Projection)
142,897
▼ -3.9%
2040
(Projection)
135,129
▼ -9.1%
2050
(Projection)
126,830
▼ -14.7%
Change vs. 2020 census
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Other municipalities in Osaka (大阪府)
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.
Sakai Population Table (2010–2050)
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 |
|---|---|---|---|
| 2010 | 148,748 | → 0.0% | Census |
| 2015 | 148,205 | ▼ -0.3% | Census |
| 2020 | 148,682 | — | Census |
| 2025 | 149,807 | ▲ +0.8% | Census |
| 2030 | 142,897 | ▼ -3.9% | Projection |
| 2035 | 139,154 | ▼ -6.4% | Projection |
| 2040 | 135,129 | ▼ -9.1% | Projection |
| 2045 | 131,031 | ▼ -11.9% | Projection |
| 2050 | 126,830 | ▼ -14.7% | Projection |
About Sakai
Overview
Sakai (堺市堺区) is a municipality in Osaka, Japan, with a population of 149,807 as of 2025.
Population Projection of Sakai
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Sakai's population is expected to reach 142,897 by 2030 (-3.9%), 135,129 by 2040 (-9.1%), and 126,830 by 2050 (-14.7%). A modest population change is expected.
Aging Rate of Sakai
The aging rate (percentage of residents aged 65 and over) is 28.2% as of 2020 and is projected to rise to 34.4% by 2050. The aging rate will remain below the most severe Japanese averages.
National Comparison
Sakai's demographic trajectory is similar to the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1489 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1653 out of 1903 nationwide.
- Population size: Ranked #264 out of 1917 nationwide.
- Related: National rankings / All municipalities in Osaka
Earnings in Osaka (大阪府): Average salary in Osaka (大阪府) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure