Kochi高知県
Umaji 馬路村
Data last updated:
Umaji, Kochi, Japan has a population of 649 (2025 national census). IPSS projections estimate 568 by 2030 and 343 by 2050 (a decrease of about 54.0% from 2020), with the share of residents aged 65+ rising from 40.9% in 2020 to 42.6%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025
(Census)
649
2030
(Projection)
568
▼ -23.8%
2040
(Projection)
444
▼ -40.4%
2050
(Projection)
343
▼ -54.0%
Change vs. 2020 census
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Other municipalities in Kochi (高知県)
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.
Umaji 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 | 1,740 | ▲ +133.6% | Census |
| 1985 | 1,501 | ▲ +101.5% | Census |
| 1990 | 1,313 | ▲ +76.2% | Census |
| 1995 | 1,242 | ▲ +66.7% | Census |
| 2000 | 1,195 | ▲ +60.4% | Census |
| 2005 | 1,170 | ▲ +57.0% | Census |
| 2010 | 1,013 | ▲ +36.0% | Census |
| 2015 | 823 | ▲ +10.5% | Census |
| 2020 | 745 | — | Census |
| 2025 | 649 | ▼ -12.9% | Census |
| 2030 | 568 | ▼ -23.8% | Projection |
| 2035 | 498 | ▼ -33.2% | Projection |
| 2040 | 444 | ▼ -40.4% | Projection |
| 2045 | 392 | ▼ -47.4% | Projection |
| 2050 | 343 | ▼ -54.0% | Projection |
About Umaji
Overview
Umaji (馬路村) is a municipality in Kochi, Japan, with a population of 649 as of 2025.
Population Projection of Umaji
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Umaji's population is expected to reach 568 by 2030 (-23.8%), 444 by 2040 (-40.4%), and 343 by 2050 (-54.0%). The town is projected to lose more than half its population over 30 years.
Aging Rate of Umaji
The aging rate (percentage of residents aged 65 and over) is 40.9% as of 2020 and is projected to rise to 42.6% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.
National Comparison
Umaji is experiencing one of the faster rates of population decline in Japan.
National and Prefectural Rank
- Population decline rate: Ranked #194 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1051 out of 1903 nationwide.
- Population size: Ranked #1891 out of 1917 nationwide.
- Related: National rankings / All municipalities in Kochi
Earnings in Kochi (高知県): Average salary in Kochi (高知県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure