日本人口减少模拟器

Nagano長野県

Suwa 諏訪市

Data last updated:

Suwa, Nagano, Japan has a population of 46,354 (2025 national census). IPSS projections estimate 44,885 by 2030 and 36,871 by 2050 (a decrease of about 24.3% from 2020), with the share of residents aged 65+ rising from 31.0% in 2020 to 40.1%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)

2025年

(实际)

46,354人

2030年

(预测)

44,885人

▼ -7.9%

2040年

(预测)

40,882人

▼ -16.1%

2050年

(预测)

36,871人

▼ -24.3%

Change vs. 2020 census

老龄化率(65岁以上): 2020年 31%→2050年 40.1%

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岁

Nagano (長野県)的其他市区町村

数据来源

  • 日本政府统计综合窗口(e-Stat)(https://www.e-stat.go.jp/)
  • 国立社会保障・人口问题研究所「日本地区别未来推计人口(令和5年推计)」

※本服务使用e-Stat的API功能,但服务内容不受日本政府保证。

Suwa 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
198050,558▲ +3.8%Census
198552,329▲ +7.4%Census
199052,464▲ +7.7%Census
199552,104▲ +6.9%Census
200053,858▲ +10.5%Census
200553,240▲ +9.3%Census
201051,200▲ +5.1%Census
201550,140▲ +2.9%Census
202048,729—Census
202546,354▼ -4.9%Census
203044,885▼ -7.9%Projection
203542,876▼ -12.0%Projection
204040,882▼ -16.1%Projection
204538,871▼ -20.2%Projection
205036,871▼ -24.3%Projection

About Suwa

Overview

Suwa (諏訪市) is a municipality in Nagano, Japan, with a population of 46,354 as of 2025.

Population Projection of Suwa

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Suwa's population is expected to reach 44,885 by 2030 (-7.9%), 40,882 by 2040 (-16.1%), and 36,871 by 2050 (-24.3%). A significant population decline is projected over the next three decades.

Aging Rate of Suwa

The aging rate (percentage of residents aged 65 and over) is 31.0% as of 2020 and is projected to rise to 40.1% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.

National Comparison

Suwa's population decline rate exceeds the national average.

National and Prefectural Rank

  • Population decline rate: Ranked #1230 out of 1903 municipalities nationwide.
  • Aging rate in 2050: Ranked #1249 out of 1903 nationwide.
  • Population size: Ranked #711 out of 1917 nationwide.
  • Related: National rankings / All municipalities in Nagano

Nagano (長野県)的收入水平: Nagano (長野県)的平均年收入(按年龄、性别、企业规模)jpsalary / 厚生劳动省 工资结构基本统计调查

Frequently Asked Questions

Q.What is the current population of Suwa, Nagano?
A.According to the 2025 national census, Suwa has a population of 46,354.
Q.What is the population of Suwa in 2026?
A.Suwa's population in 2026 is estimated at approximately 46,060. This is an interpolated reference value between the 2025 census (46,354) and the IPSS projection for 2030 (44,885).
Q.What is the projected population of Suwa in the future?
A.According to IPSS projections, Suwa's population is expected to be 44,885 in 2030, 40,882 in 2040, and 36,871 in 2050.
Q.What is the population decline rate of Suwa?
A.Over the 30 years from 2020 to 2050, Suwa's population is projected to change by -24.3%. The 10-year change is -7.9% and the 20-year change is -16.1%.
Q.Why is the population of Suwa 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 Suwa, the share of residents aged 65+ is projected to rise from 31.0% to 40.1% by 2050, which further accelerates natural decrease.
Q.What is the aging rate of Suwa?
A.Suwa's aging rate (percentage aged 65 and over) is 31.0% as of 2020, projected to rise to 40.1% 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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