Japan Population Decline Simulator

Miyazaki宮崎県

Kijou 木城町

Data last updated:

Kijou, Miyazaki, Japan has a population of 4,898 (2020 national census). IPSS projections estimate 4,262 by 2030 and 3,151 by 2050 (a decrease of about 35.7% from 2020), with the share of residents aged 65+ rising from 37.2% to 43.2%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2020

(Census)

4,898

2030

(Projection)

4,262

-13.0%

2040

(Projection)

3,658

-25.3%

2050

(Projection)

3,151

-35.7%

Elderly Rate (65+): 2020 37.2%2050 43.2%

Other municipalities in Miyazaki (宮崎県)

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.

Kijou Population Projection Table (2020–2050)

Population by year, based on the national census and IPSS (2023) projections.

YearPopulationvs 2020Type
20204,898Census
20254,596▼ -6.2%Projection
20304,262▼ -13.0%Projection
20353,945▼ -19.5%Projection
20403,658▼ -25.3%Projection
20453,393▼ -30.7%Projection
20503,151▼ -35.7%Projection

About Kijou

Overview

Kijou (木城町) is a municipality in Miyazaki, Japan, with a population of 4,898 as of 2020.

Population Projection of Kijou

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Kijou's population is expected to reach 4,262 by 2030 (-13.0%), 3,658 by 2040 (-25.3%), and 3,151 by 2050 (-35.7%). A significant population decline is projected over the next three decades.

Aging Rate of Kijou

The aging rate (percentage of residents aged 65 and over) is 37.2% as of 2020 and is projected to rise to 43.2% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.

National Comparison

Kijou's population decline rate exceeds the national average.

National and Prefectural Rank

  • Population decline rate: Ranked #875 out of 1916 municipalities nationwide.
  • Aging rate in 2050: Ranked #1012 out of 1916 nationwide.
  • Population size: Ranked #1630 out of 1916 nationwide.
  • Related: National rankings / All municipalities in Miyazaki

Frequently Asked Questions

Q.What is the current population of Kijou, Miyazaki?
A.According to the 2020 national census, Kijou has a population of 4,898.
Q.What is the population of Kijou in 2026?
A.Kijou's population in 2026 is estimated at approximately 4,529. This is an interpolated reference value between the 2020 census (4,898) and the IPSS projection for 2030 (4,262).
Q.What is the projected population of Kijou in the future?
A.According to IPSS projections, Kijou's population is expected to be 4,262 in 2030, 3,658 in 2040, and 3,151 in 2050.
Q.What is the population decline rate of Kijou?
A.Over the 30 years from 2020 to 2050, Kijou's population is projected to change by -35.7%. The 10-year change is -13.0% and the 20-year change is -25.3%.
Q.Why is the population of Kijou 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 Kijou, the share of residents aged 65+ is projected to rise from 37.2% to 43.2% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Kijou?
A.Kijou's aging rate (percentage aged 65 and over) is 37.2% as of 2020, projected to rise to 43.2% 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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