Japan Population Decline Simulator

Okinawa沖縄県

Nishihara 西原町

Data last updated:

Nishihara, Okinawa, Japan has a population of 35,270 (2025 national census). IPSS projections estimate 34,389 by 2030 and 31,073 by 2050 (a decrease of about 11.2% from 2020), with the share of residents aged 65+ rising from 21.7% in 2020 to 34.9%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2025

(Census)

35,270

2030

(Projection)

34,389

▼ -1.7%

2040

(Projection)

32,970

▼ -5.8%

2050

(Projection)

31,073

▼ -11.2%

Change vs. 2020 census

Elderly Rate (65+): 2020 21.7%→2050 34.9%

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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.

Nishihara 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
198016,305▼ -53.4%Census
198521,981▼ -37.2%Census
199025,489▼ -27.1%Census
199528,516▼ -18.5%Census
200032,777▼ -6.3%Census
200533,733▼ -3.6%Census
201034,766▼ -0.6%Census
201534,508▼ -1.4%Census
202034,984—Census
202535,270▲ +0.8%Census
203034,389▼ -1.7%Projection
203533,750▼ -3.5%Projection
204032,970▼ -5.8%Projection
204532,069▼ -8.3%Projection
205031,073▼ -11.2%Projection

About Nishihara

Overview

Nishihara (西原町) is a municipality in Okinawa, Japan, with a population of 35,270 as of 2025.

Population Projection of Nishihara

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Nishihara's population is expected to reach 34,389 by 2030 (-1.7%), 32,970 by 2040 (-5.8%), and 31,073 by 2050 (-11.2%). A modest population change is expected.

Aging Rate of Nishihara

The aging rate (percentage of residents aged 65 and over) is 21.7% as of 2020 and is projected to rise to 34.9% by 2050. The aging rate will remain below the most severe Japanese averages.

National Comparison

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

National and Prefectural Rank

  • Population decline rate: Ranked #1589 out of 1903 municipalities nationwide.
  • Aging rate in 2050: Ranked #1622 out of 1903 nationwide.
  • Population size: Ranked #832 out of 1917 nationwide.
  • Related: National rankings / All municipalities in Okinawa

Earnings in Okinawa (沖縄県): Average salary in Okinawa (沖縄県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure

Frequently Asked Questions

Q.What is the current population of Nishihara, Okinawa?
A.According to the 2025 national census, Nishihara has a population of 35,270.
Q.What is the population of Nishihara in 2026?
A.Nishihara's population in 2026 is estimated at approximately 35,094. This is an interpolated reference value between the 2025 census (35,270) and the IPSS projection for 2030 (34,389).
Q.What is the projected population of Nishihara in the future?
A.According to IPSS projections, Nishihara's population is expected to be 34,389 in 2030, 32,970 in 2040, and 31,073 in 2050.
Q.What is the population decline rate of Nishihara?
A.Over the 30 years from 2020 to 2050, Nishihara's population is projected to change by -11.2%. The 10-year change is -1.7% and the 20-year change is -5.8%.
Q.Why is the population of Nishihara 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 Nishihara, the share of residents aged 65+ is projected to rise from 21.7% to 34.9% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Nishihara?
A.Nishihara's aging rate (percentage aged 65 and over) is 21.7% as of 2020, projected to rise to 34.9% 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 national census results through 2025. Future projections use the IPSS 2023 edition, which is based on the 2020 census.

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