Japan Population Decline Simulator

Aichi愛知県

Oobu 大府市

Data last updated:

Oobu, Aichi, Japan has a population of 92,418 (2025 national census). IPSS projections estimate 95,895 by 2030 and 94,007 by 2050 (an increase of about 0.9% from 2020), with the share of residents aged 65+ rising from 21.7% in 2020 to 30.0%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2025Census

92,418

2030Projection

95,895

▲ +3.0%

2040Projection

95,911

▲ +3.0%

2050Projection

94,007

▲ +0.9%

Change vs. 2020 census

Elderly Rate (65+): 2020 21.7%→2050 30%

Enter your age

See the population of 大府市 when you turn 50, 60, 70 and 80.

years old

Other municipalities in Aichi (愛知県)

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.

Oobu 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
198062,277▼ -33.1%Census
198566,696▼ -28.4%Census
199069,720▼ -25.1%Census
199573,096▼ -21.5%Census
200075,273▼ -19.2%Census
200580,262▼ -13.8%Census
201085,249▼ -8.5%Census
201589,157▼ -4.3%Census
202093,123—Census
202592,418▼ -0.8%Census
203095,895▲ +3.0%Projection
203596,173▲ +3.3%Projection
204095,911▲ +3.0%Projection
204595,167▲ +2.2%Projection
205094,007▲ +0.9%Projection

About Oobu

Overview

Oobu (大府市) is a municipality in Aichi, Japan, with a population of 92,418 as of 2025.

Population Projection of Oobu

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Oobu's population is expected to reach 95,895 by 2030 (+3.0%), 95,911 by 2040 (+3.0%), and 94,007 by 2050 (+0.9%). Oobu is among the rare Japanese municipalities projected to see population growth.

Aging Rate of Oobu

The aging rate (percentage of residents aged 65 and over) is 21.7% as of 2020 and is projected to rise to 30.0% by 2050. The aging rate will remain below the most severe Japanese averages.

National Comparison

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

National and Prefectural Rank

  • Population decline rate: Ranked #1808 out of 1903 municipalities nationwide.
  • Aging rate in 2050: Ranked #1830 out of 1903 nationwide.
  • Population size: Ranked #444 out of 1917 nationwide.
  • Related: National rankings / All municipalities in Aichi

Earnings in Aichi (愛知県): Average salary in Aichi (愛知県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure

Frequently Asked Questions

Q.What is the current population of Oobu, Aichi?
A.According to the 2025 national census, Oobu has a population of 92,418.
Q.What is the population of Oobu in 2026?
A.Oobu's population in 2026 is estimated at approximately 93,113. This is an interpolated reference value between the 2025 census (92,418) and the IPSS projection for 2030 (95,895).
Q.What is the projected population of Oobu in the future?
A.According to IPSS projections, Oobu's population is expected to be 95,895 in 2030, 95,911 in 2040, and 94,007 in 2050.
Q.What is the population decline rate of Oobu?
A.Over the 30 years from 2020 to 2050, Oobu's population is projected to change by +0.9%. The 10-year change is +3.0% and the 20-year change is +3.0%.
Q.Why is the population of Oobu growing?
A.Municipalities with growing populations typically benefit from net in-migration driven by good access to major metropolitan areas, housing development, and family support policies. Oobu is one of the minority of Japanese municipalities projected to grow through 2050.
Q.What is the aging rate of Oobu?
A.Oobu's aging rate (percentage aged 65 and over) is 21.7% as of 2020, projected to rise to 30.0% 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.

Similar-Sized Municipalities in Aichi

Municipalities with Similar Trends

Share this page