Japan Population Decline Simulator

Saitama埼玉県

Yoshimi 吉見町

Data last updated:

Yoshimi, Saitama, Japan has a population of 16,823 (2025 national census). IPSS projections estimate 15,519 by 2030 and 9,671 by 2050 (a decrease of about 46.8% from 2020), with the share of residents aged 65+ rising from 33.8% in 2020 to 54.8%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2025

(Census)

16,823

2030

(Projection)

15,519

▼ -14.7%

2040

(Projection)

12,581

▼ -30.8%

2050

(Projection)

9,671

▼ -46.8%

Change vs. 2020 census

Elderly Rate (65+): 2020 33.8%→2050 54.8%

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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.

Yoshimi 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
198016,107▼ -11.5%Census
198517,043▼ -6.3%Census
199018,991▲ +4.4%Census
199521,371▲ +17.5%Census
200022,246▲ +22.3%Census
200522,217▲ +22.1%Census
201021,079▲ +15.9%Census
201519,631▲ +7.9%Census
202018,192—Census
202516,823▼ -7.5%Census
203015,519▼ -14.7%Projection
203514,084▼ -22.6%Projection
204012,581▼ -30.8%Projection
204511,071▼ -39.1%Projection
20509,671▼ -46.8%Projection

About Yoshimi

Overview

Yoshimi (吉見町) is a municipality in Saitama, Japan, with a population of 16,823 as of 2025.

Population Projection of Yoshimi

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Yoshimi's population is expected to reach 15,519 by 2030 (-14.7%), 12,581 by 2040 (-30.8%), and 9,671 by 2050 (-46.8%). A significant population decline is projected over the next three decades.

Aging Rate of Yoshimi

The aging rate (percentage of residents aged 65 and over) is 33.8% as of 2020 and is projected to rise to 54.8% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.

National Comparison

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

National and Prefectural Rank

  • Population decline rate: Ranked #457 out of 1903 municipalities nationwide.
  • Aging rate in 2050: Ranked #289 out of 1903 nationwide.
  • Population size: Ranked #1139 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 Yoshimi, Saitama?
A.According to the 2025 national census, Yoshimi has a population of 16,823.
Q.What is the population of Yoshimi in 2026?
A.Yoshimi's population in 2026 is estimated at approximately 16,562. This is an interpolated reference value between the 2025 census (16,823) and the IPSS projection for 2030 (15,519).
Q.What is the projected population of Yoshimi in the future?
A.According to IPSS projections, Yoshimi's population is expected to be 15,519 in 2030, 12,581 in 2040, and 9,671 in 2050.
Q.What is the population decline rate of Yoshimi?
A.Over the 30 years from 2020 to 2050, Yoshimi's population is projected to change by -46.8%. The 10-year change is -14.7% and the 20-year change is -30.8%.
Q.Why is the population of Yoshimi 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 Yoshimi, the share of residents aged 65+ is projected to rise from 33.8% to 54.8% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Yoshimi?
A.Yoshimi's aging rate (percentage aged 65 and over) is 33.8% as of 2020, projected to rise to 54.8% 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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