Japan Population Decline Simulator

Nagano長野県

Iida 飯田市

Data last updated:

2020

(Census)

98,206

2030

(Projection)

89,644

-8.7%

2040

(Projection)

81,330

-17.2%

2050

(Projection)

72,714

-26.0%

Elderly Rate (65+): 2020 32.8%2050 40.9%

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 Iida

Overview

Iida (飯田市) is a municipality in Nagano, Japan, with a population of 98,206 as of 2020.

Population Projection

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Iida's population is expected to reach 89,644 by 2030 (-8.7%), 81,330 by 2040 (-17.2%), and 72,714 by 2050 (-26.0%). A significant population decline is projected over the next three decades.

Aging Outlook

The aging rate (percentage of residents aged 65 and over) is 32.8% as of 2020 and is projected to rise to 40.9% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.

National Comparison

Iida's population decline rate exceeds the national average.

Frequently Asked Questions

Q.What is the current population of Iida, Nagano?
A.According to the 2020 national census, Iida has a population of 98,206.
Q.What is the projected population of Iida in the future?
A.According to IPSS projections, Iida's population is expected to be 89,644 in 2030, 81,330 in 2040, and 72,714 in 2050.
Q.What is the population decline rate of Iida?
A.Over the 30 years from 2020 to 2050, Iida's population is projected to change by -26.0%. The 10-year change is -8.7% and the 20-year change is -17.2%.
Q.What is the aging rate of Iida?
A.Iida's aging rate (percentage aged 65 and over) is 32.8% as of 2020, projected to rise to 40.9% 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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