Japan Population Decline Simulator

Osaka大阪府

Tajiri 田尻町

Data last updated:

Tajiri, Osaka, Japan has a population of 8,098 (2025 national census). IPSS projections estimate 8,291 by 2030 and 7,638 by 2050 (a decrease of about 9.4% from 2020), with the share of residents aged 65+ rising from 23.9% in 2020 to 32.8%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2025

(Census)

8,098

2030

(Projection)

8,291

▼ -1.7%

2040

(Projection)

7,972

▼ -5.5%

2050

(Projection)

7,638

▼ -9.4%

Change vs. 2020 census

Elderly Rate (65+): 2020 23.9%→2050 32.8%

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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.

Tajiri Population Table (1980–2050)

Population by year: national census results (restated to current municipal boundaries) and IPSS (2023) projections based on the 2020 census.

YearPopulationvs 2020Type
19807,519▼ -10.8%Census
19857,223▼ -14.4%Census
19906,540▼ -22.5%Census
19956,285▼ -25.5%Census
20006,785▼ -19.6%Census
20057,240▼ -14.2%Census
20108,085▼ -4.1%Census
20158,417▼ -0.2%Census
20208,434—Census
20258,098▼ -4.0%Census
20308,291▼ -1.7%Projection
20358,133▼ -3.6%Projection
20407,972▼ -5.5%Projection
20457,822▼ -7.3%Projection
20507,638▼ -9.4%Projection

About Tajiri

Overview

Tajiri (田尻町) is a municipality in Osaka, Japan, with a population of 8,098 as of 2025.

Population Projection of Tajiri

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Tajiri's population is expected to reach 8,291 by 2030 (-1.7%), 7,972 by 2040 (-5.5%), and 7,638 by 2050 (-9.4%). A modest population change is expected.

Aging Rate of Tajiri

The aging rate (percentage of residents aged 65 and over) is 23.9% as of 2020 and is projected to rise to 32.8% by 2050. The aging rate will remain below the most severe Japanese averages.

National Comparison

Tajiri's demographic trajectory is similar to the national average.

National and Prefectural Rank

  • Population decline rate: Ranked #1631 out of 1903 municipalities nationwide.
  • Aging rate in 2050: Ranked #1746 out of 1903 nationwide.
  • Population size: Ranked #1422 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

Frequently Asked Questions

Q.What is the current population of Tajiri, Osaka?
A.According to the 2025 national census, Tajiri has a population of 8,098.
Q.What is the population of Tajiri in 2026?
A.Tajiri's population in 2026 is estimated at approximately 8,137. This is an interpolated reference value between the 2025 census (8,098) and the IPSS projection for 2030 (8,291).
Q.What is the projected population of Tajiri in the future?
A.According to IPSS projections, Tajiri's population is expected to be 8,291 in 2030, 7,972 in 2040, and 7,638 in 2050.
Q.What is the population decline rate of Tajiri?
A.Over the 30 years from 2020 to 2050, Tajiri's population is projected to change by -9.4%. The 10-year change is -1.7% and the 20-year change is -5.5%.
Q.Why is the population of Tajiri declining?
A.Nationwide, Japan's population decline is driven by natural decrease (deaths exceeding births) and, in regional municipalities, by net out-migration of young people to major metropolitan areas. In Tajiri, the share of residents aged 65+ is projected to rise from 23.9% to 32.8% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Tajiri?
A.Tajiri's aging rate (percentage aged 65 and over) is 23.9% as of 2020, projected to rise to 32.8% by 2050.
Q.Where does this population data come from?
A.Historical data is sourced from Japan's national census via the e-Stat API (Statistics Bureau of Japan). Future projections are from the National Institute of Population and Social Security Research (IPSS) "Regional Population Projections 2023".
Q.Is the data up to date?
A.Historical data uses national census results through 2025. Future projections use the IPSS 2023 edition, which is based on the 2020 census.

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