Japan Population Decline Simulator

Saitama埼玉県

Hidaka 日高市

Data last updated:

Hidaka, Saitama, Japan has a population of 53,231 (2025 national census). IPSS projections estimate 51,771 by 2030 and 44,637 by 2050 (a decrease of about 18.2% from 2020), with the share of residents aged 65+ rising from 33.2% in 2020 to 41.6%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2025

(Census)

53,231

2030

(Projection)

51,771

▼ -5.1%

2040

(Projection)

48,006

▼ -12.0%

2050

(Projection)

44,637

▼ -18.2%

Change vs. 2020 census

Elderly Rate (65+): 2020 33.2%→2050 41.6%

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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.

Hidaka 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
198043,219▼ -20.8%Census
198548,227▼ -11.6%Census
199053,169▼ -2.6%Census
199554,884▲ +0.6%Census
200053,758▼ -1.5%Census
200553,619▼ -1.7%Census
201057,473▲ +5.3%Census
201556,520▲ +3.6%Census
202054,571—Census
202553,231▼ -2.5%Census
203051,771▼ -5.1%Projection
203549,884▼ -8.6%Projection
204048,006▼ -12.0%Projection
204546,239▼ -15.3%Projection
205044,637▼ -18.2%Projection

About Hidaka

Overview

Hidaka (日高市) is a municipality in Saitama, Japan, with a population of 53,231 as of 2025.

Population Projection of Hidaka

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Hidaka's population is expected to reach 51,771 by 2030 (-5.1%), 48,006 by 2040 (-12.0%), and 44,637 by 2050 (-18.2%). A modest population change is expected.

Aging Rate of Hidaka

The aging rate (percentage of residents aged 65 and over) is 33.2% as of 2020 and is projected to rise to 41.6% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.

National Comparison

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

National and Prefectural Rank

  • Population decline rate: Ranked #1397 out of 1903 municipalities nationwide.
  • Aging rate in 2050: Ranked #1119 out of 1903 nationwide.
  • Population size: Ranked #658 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 Hidaka, Saitama?
A.According to the 2025 national census, Hidaka has a population of 53,231.
Q.What is the population of Hidaka in 2026?
A.Hidaka's population in 2026 is estimated at approximately 52,939. This is an interpolated reference value between the 2025 census (53,231) and the IPSS projection for 2030 (51,771).
Q.What is the projected population of Hidaka in the future?
A.According to IPSS projections, Hidaka's population is expected to be 51,771 in 2030, 48,006 in 2040, and 44,637 in 2050.
Q.What is the population decline rate of Hidaka?
A.Over the 30 years from 2020 to 2050, Hidaka's population is projected to change by -18.2%. The 10-year change is -5.1% and the 20-year change is -12.0%.
Q.Why is the population of Hidaka 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 Hidaka, the share of residents aged 65+ is projected to rise from 33.2% to 41.6% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Hidaka?
A.Hidaka's aging rate (percentage aged 65 and over) is 33.2% as of 2020, projected to rise to 41.6% 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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