Shiga滋賀県
Rittou 栗東市
Data last updated:
Rittou, Shiga, Japan has a population of 69,143 (2025 national census). IPSS projections estimate 70,241 by 2030 and 67,595 by 2050 (a decrease of about 1.8% from 2020), with the share of residents aged 65+ rising from 19.2% in 2020 to 30.3%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025Census
69,143
2030Projection
70,241
▲ +2.1%
2040Projection
69,751
▲ +1.4%
2050Projection
67,595
▼ -1.8%
Change vs. 2020 census
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Other municipalities in Shiga (滋賀県)
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.
Rittou 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 | 37,033 | ▼ -46.2% | Census |
| 1985 | 41,827 | ▼ -39.2% | Census |
| 1990 | 45,049 | ▼ -34.5% | Census |
| 1995 | 48,759 | ▼ -29.1% | Census |
| 2000 | 54,856 | ▼ -20.3% | Census |
| 2005 | 59,869 | ▼ -13.0% | Census |
| 2010 | 63,655 | ▼ -7.5% | Census |
| 2015 | 66,749 | ▼ -3.0% | Census |
| 2020 | 68,820 | — | Census |
| 2025 | 69,143 | ▲ +0.5% | Census |
| 2030 | 70,241 | ▲ +2.1% | Projection |
| 2035 | 70,195 | ▲ +2.0% | Projection |
| 2040 | 69,751 | ▲ +1.4% | Projection |
| 2045 | 68,883 | ▲ +0.1% | Projection |
| 2050 | 67,595 | ▼ -1.8% | Projection |
About Rittou
Overview
Rittou (栗東市) is a municipality in Shiga, Japan, with a population of 69,143 as of 2025.
Population Projection of Rittou
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Rittou's population is expected to reach 70,241 by 2030 (+2.1%), 69,751 by 2040 (+1.4%), and 67,595 by 2050 (-1.8%). A modest population change is expected.
Aging Rate of Rittou
The aging rate (percentage of residents aged 65 and over) is 19.2% as of 2020 and is projected to rise to 30.3% by 2050. The aging rate will remain below the most severe Japanese averages.
National Comparison
Rittou's demographic trajectory is similar to the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1773 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1824 out of 1903 nationwide.
- Population size: Ranked #558 out of 1917 nationwide.
- Related: National rankings / All municipalities in Shiga
Earnings in Shiga (滋賀県): Average salary in Shiga (滋賀県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure