Japan Population Decline Simulator

Nagano長野県

Yamanouchi 山ノ内町

Data last updated:

2020

(Census)

11,363

2030

(Projection)

9,210

-18.9%

2040

(Projection)

7,273

-36.0%

2050

(Projection)

5,578

-50.9%

Elderly Rate (65+): 2020 42%2050 56.7%

Other municipalities in Nagano (長野県)

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.

About Yamanouchi

Overview

Yamanouchi (山ノ内町) is a municipality in Nagano, Japan, with a population of 11,363 as of 2020.

Population Projection

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Yamanouchi's population is expected to reach 9,210 by 2030 (-18.9%), 7,273 by 2040 (-36.0%), and 5,578 by 2050 (-50.9%). The town is projected to lose more than half its population over 30 years.

Aging Outlook

The aging rate (percentage of residents aged 65 and over) is 42.0% as of 2020 and is projected to rise to 56.7% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.

National Comparison

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

Frequently Asked Questions

Q.What is the current population of Yamanouchi, Nagano?
A.According to the 2020 national census, Yamanouchi has a population of 11,363.
Q.What is the projected population of Yamanouchi in the future?
A.According to IPSS projections, Yamanouchi's population is expected to be 9,210 in 2030, 7,273 in 2040, and 5,578 in 2050.
Q.What is the population decline rate of Yamanouchi?
A.Over the 30 years from 2020 to 2050, Yamanouchi's population is projected to change by -50.9%. The 10-year change is -18.9% and the 20-year change is -36.0%.
Q.What is the aging rate of Yamanouchi?
A.Yamanouchi's aging rate (percentage aged 65 and over) is 42.0% as of 2020, projected to rise to 56.7% 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 the 2020 national census results. Future projections use the IPSS 2023 edition. Data will be updated as new census results become available.

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