Japan Population Decline Simulator

Saitama埼玉県

Ogano 小鹿野町

Data last updated:

Ogano, Saitama, Japan has a population of 9,465 (2025 national census). IPSS projections estimate 8,625 by 2030 and 4,907 by 2050 (a decrease of about 55.1% from 2020), with the share of residents aged 65+ rising from 39.0% in 2020 to 61.1%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2025

(Census)

9,465

2030

(Projection)

8,625

▼ -21.1%

2040

(Projection)

6,659

▼ -39.1%

2050

(Projection)

4,907

▼ -55.1%

Change vs. 2020 census

Elderly Rate (65+): 2020 39%→2050 61.1%

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Other municipalities in Saitama (埼玉県)

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.

Ogano 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
198016,190▲ +48.2%Census
198516,118▲ +47.5%Census
199015,919▲ +45.7%Census
199515,628▲ +43.0%Census
200015,061▲ +37.8%Census
200514,479▲ +32.5%Census
201013,436▲ +23.0%Census
201512,117▲ +10.9%Census
202010,928—Census
20259,465▼ -13.4%Census
20308,625▼ -21.1%Projection
20357,615▼ -30.3%Projection
20406,659▼ -39.1%Projection
20455,755▼ -47.3%Projection
20504,907▼ -55.1%Projection

About Ogano

Overview

Ogano (小鹿野町) is a municipality in Saitama, Japan, with a population of 9,465 as of 2025.

Population Projection of Ogano

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Ogano's population is expected to reach 8,625 by 2030 (-21.1%), 6,659 by 2040 (-39.1%), and 4,907 by 2050 (-55.1%). The town is projected to lose more than half its population over 30 years.

Aging Rate of Ogano

The aging rate (percentage of residents aged 65 and over) is 39.0% as of 2020 and is projected to rise to 61.1% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.

National Comparison

Ogano is experiencing one of the faster rates of population decline in Japan.

National and Prefectural Rank

  • Population decline rate: Ranked #170 out of 1903 municipalities nationwide.
  • Aging rate in 2050: Ranked #80 out of 1903 nationwide.
  • Population size: Ranked #1374 out of 1917 nationwide.
  • Related: National rankings / All municipalities in Saitama

Earnings in Saitama (埼玉県): Average salary in Saitama (埼玉県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure

Frequently Asked Questions

Q.What is the current population of Ogano, Saitama?
A.According to the 2025 national census, Ogano has a population of 9,465.
Q.What is the population of Ogano in 2026?
A.Ogano's population in 2026 is estimated at approximately 9,297. This is an interpolated reference value between the 2025 census (9,465) and the IPSS projection for 2030 (8,625).
Q.What is the projected population of Ogano in the future?
A.According to IPSS projections, Ogano's population is expected to be 8,625 in 2030, 6,659 in 2040, and 4,907 in 2050.
Q.What is the population decline rate of Ogano?
A.Over the 30 years from 2020 to 2050, Ogano's population is projected to change by -55.1%. The 10-year change is -21.1% and the 20-year change is -39.1%.
Q.Why is the population of Ogano 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 Ogano, the share of residents aged 65+ is projected to rise from 39.0% to 61.1% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Ogano?
A.Ogano's aging rate (percentage aged 65 and over) is 39.0% as of 2020, projected to rise to 61.1% 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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