Japan Population Decline Simulator

Saitama埼玉県

Asaka 朝霞市

Data last updated:

Asaka, Saitama, Japan has a population of 147,233 (2025 national census). IPSS projections estimate 145,839 by 2030 and 146,963 by 2050 (an increase of about 4.2% from 2020), with the share of residents aged 65+ rising from 19.6% in 2020 to 28.7%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2025

(Census)

147,233

2030

(Projection)

145,839

▲ +3.4%

2040

(Projection)

147,886

▲ +4.8%

2050

(Projection)

146,963

▲ +4.2%

Change vs. 2020 census

Elderly Rate (65+): 2020 19.6%→2050 28.7%

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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.

Asaka 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
198090,088▼ -36.1%Census
198594,431▼ -33.1%Census
1990103,617▼ -26.6%Census
1995110,789▼ -21.5%Census
2000119,712▼ -15.1%Census
2005124,393▼ -11.8%Census
2010129,691▼ -8.1%Census
2015136,299▼ -3.4%Census
2020141,083—Census
2025147,233▲ +4.4%Census
2030145,839▲ +3.4%Projection
2035147,265▲ +4.4%Projection
2040147,886▲ +4.8%Projection
2045147,750▲ +4.7%Projection
2050146,963▲ +4.2%Projection

About Asaka

Overview

Asaka (朝霞市) is a municipality in Saitama, Japan, with a population of 147,233 as of 2025.

Population Projection of Asaka

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Asaka's population is expected to reach 145,839 by 2030 (+3.4%), 147,886 by 2040 (+4.8%), and 146,963 by 2050 (+4.2%). Asaka is among the rare Japanese municipalities projected to see population growth.

Aging Rate of Asaka

The aging rate (percentage of residents aged 65 and over) is 19.6% as of 2020 and is projected to rise to 28.7% by 2050. The aging rate will remain below the most severe Japanese averages.

National Comparison

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

National and Prefectural Rank

  • Population decline rate: Ranked #1848 out of 1903 municipalities nationwide.
  • Aging rate in 2050: Ranked #1856 out of 1903 nationwide.
  • Population size: Ranked #272 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 Asaka, Saitama?
A.According to the 2025 national census, Asaka has a population of 147,233.
Q.What is the population of Asaka in 2026?
A.Asaka's population in 2026 is estimated at approximately 146,954. This is an interpolated reference value between the 2025 census (147,233) and the IPSS projection for 2030 (145,839).
Q.What is the projected population of Asaka in the future?
A.According to IPSS projections, Asaka's population is expected to be 145,839 in 2030, 147,886 in 2040, and 146,963 in 2050.
Q.What is the population decline rate of Asaka?
A.Over the 30 years from 2020 to 2050, Asaka's population is projected to change by +4.2%. The 10-year change is +3.4% and the 20-year change is +4.8%.
Q.Why is the population of Asaka growing?
A.Municipalities with growing populations typically benefit from net in-migration driven by good access to major metropolitan areas, housing development, and family support policies. Asaka is one of the minority of Japanese municipalities projected to grow through 2050.
Q.What is the aging rate of Asaka?
A.Asaka's aging rate (percentage aged 65 and over) is 19.6% as of 2020, projected to rise to 28.7% 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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