Shizuoka静岡県
Iwata 磐田市
Data last updated:
Iwata, Shizuoka, Japan has a population of 160,456 (2025 national census). IPSS projections estimate 158,107 by 2030 and 135,644 by 2050 (a decrease of about 18.6% from 2020), with the share of residents aged 65+ rising from 28.8% in 2020 to 37.5%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
160,456
2030
(Projection)
158,107
▼ -5.1%
2040
(Projection)
147,363
▼ -11.6%
2050
(Projection)
135,644
▼ -18.6%
Change vs. 2020 census
Enter your age
See the population of 磐田市 when you turn 50, 60, 70 and 80.
Other municipalities in Shizuoka (静岡県)
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.
Iwata 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 | 140,751 | ▼ -15.6% | Census |
| 1985 | 150,832 | ▼ -9.5% | Census |
| 1990 | 157,219 | ▼ -5.7% | Census |
| 1995 | 162,667 | ▼ -2.4% | Census |
| 2000 | 166,002 | ▼ -0.4% | Census |
| 2005 | 170,899 | ▲ +2.5% | Census |
| 2010 | 168,625 | ▲ +1.2% | Census |
| 2015 | 167,210 | ▲ +0.3% | Census |
| 2020 | 166,672 | — | Census |
| 2025 | 160,456 | ▼ -3.7% | Census |
| 2030 | 158,107 | ▼ -5.1% | Projection |
| 2035 | 152,902 | ▼ -8.3% | Projection |
| 2040 | 147,363 | ▼ -11.6% | Projection |
| 2045 | 141,538 | ▼ -15.1% | Projection |
| 2050 | 135,644 | ▼ -18.6% | Projection |
About Iwata
Overview
Iwata (磐田市) is a municipality in Shizuoka, Japan, with a population of 160,456 as of 2025.
Population Projection of Iwata
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Iwata's population is expected to reach 158,107 by 2030 (-5.1%), 147,363 by 2040 (-11.6%), and 135,644 by 2050 (-18.6%). A modest population change is expected.
Aging Rate of Iwata
The aging rate (percentage of residents aged 65 and over) is 28.8% as of 2020 and is projected to rise to 37.5% by 2050. The aging rate will remain below the most severe Japanese averages.
National Comparison
Iwata's demographic trajectory is similar to the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1383 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1436 out of 1903 nationwide.
- Population size: Ranked #240 out of 1917 nationwide.
- Related: National rankings / All municipalities in Shizuoka
Earnings in Shizuoka (静岡県): Average salary in Shizuoka (静岡県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure