Japan Population Decline Simulator

Chiba千葉県

Kashiwa 柏市

Data last updated:

Kashiwa, Chiba, Japan has a population of 435,302 (2025 national census). IPSS projections estimate 439,526 by 2030 and 435,479 by 2050 (an increase of about 2.1% from 2020), with the share of residents aged 65+ rising from 26.5% in 2020 to 32.9%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2025

(Census)

435,302

2030

(Projection)

439,526

▲ +3.1%

2040

(Projection)

440,804

▲ +3.4%

2050

(Projection)

435,479

▲ +2.1%

Change vs. 2020 census

Elderly Rate (65+): 2020 26.5%→2050 32.9%

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Other municipalities in Chiba (千葉県)

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.

Kashiwa 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
1980272,904▼ -36.0%Census
1985311,155▼ -27.0%Census
1990347,002▼ -18.6%Census
1995362,880▼ -14.9%Census
2000373,778▼ -12.4%Census
2005380,963▼ -10.7%Census
2010404,012▼ -5.3%Census
2015413,954▼ -2.9%Census
2020426,468—Census
2025435,302▲ +2.1%Census
2030439,526▲ +3.1%Projection
2035441,320▲ +3.5%Projection
2040440,804▲ +3.4%Projection
2045438,567▲ +2.8%Projection
2050435,479▲ +2.1%Projection

About Kashiwa

Overview

Kashiwa (柏市) is a municipality in Chiba, Japan, with a population of 435,302 as of 2025.

Population Projection of Kashiwa

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Kashiwa's population is expected to reach 439,526 by 2030 (+3.1%), 440,804 by 2040 (+3.4%), and 435,479 by 2050 (+2.1%). Kashiwa is among the rare Japanese municipalities projected to see population growth.

Aging Rate of Kashiwa

The aging rate (percentage of residents aged 65 and over) is 26.5% as of 2020 and is projected to rise to 32.9% by 2050. The aging rate will remain below the most severe Japanese averages.

National Comparison

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

National and Prefectural Rank

  • Population decline rate: Ranked #1825 out of 1903 municipalities nationwide.
  • Aging rate in 2050: Ranked #1737 out of 1903 nationwide.
  • Population size: Ranked #48 out of 1917 nationwide.
  • Related: National rankings / All municipalities in Chiba

Earnings in Chiba (千葉県): Average salary in Chiba (千葉県) by age, gender and company sizejpsalary / MHLW Basic Survey on Wage Structure

Frequently Asked Questions

Q.What is the current population of Kashiwa, Chiba?
A.According to the 2025 national census, Kashiwa has a population of 435,302.
Q.What is the population of Kashiwa in 2026?
A.Kashiwa's population in 2026 is estimated at approximately 436,147. This is an interpolated reference value between the 2025 census (435,302) and the IPSS projection for 2030 (439,526).
Q.What is the projected population of Kashiwa in the future?
A.According to IPSS projections, Kashiwa's population is expected to be 439,526 in 2030, 440,804 in 2040, and 435,479 in 2050.
Q.What is the population decline rate of Kashiwa?
A.Over the 30 years from 2020 to 2050, Kashiwa's population is projected to change by +2.1%. The 10-year change is +3.1% and the 20-year change is +3.4%.
Q.Why is the population of Kashiwa 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. Kashiwa is one of the minority of Japanese municipalities projected to grow through 2050.
Q.What is the aging rate of Kashiwa?
A.Kashiwa's aging rate (percentage aged 65 and over) is 26.5% as of 2020, projected to rise to 32.9% 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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