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Kasamatsu Town

Area profile

Population

Update frequency: Annual

Total population

21,873

Male 10,665/Female 11,208
48.8%51.2%

Change on previous year: +44 (+0.2%)

875 of 1741 municipalities nationwide

Average of similar local governments (V-2): 31,075

Source: Basic Resident RegistrationFiscal year: 1 January 2026Data updated: 2026-10-12Retrieved: 2026-10-12Jichitai Watch shows only the latest year (2026).

Number of households

Update frequency: Annual

9,737

Change on previous year: +176 (+1.8%)

902 of 1741 municipalities nationwide

Average of similar local governments (V-2): 14,218

Source: Basic Resident RegistrationFiscal year: 1 January 2026Data updated: 2026-10-12Retrieved: 2026-10-12Jichitai Watch shows only the latest year (2026). The data are the same as on the Population card.

One-person households and population aged 65 and over

Update frequency: Annual

Share of one-person households

32.54%

1085 of 1741 municipalities nationwide

Average of similar local governments (V-2): 31.8%

Share of population aged 65 and over

27.2%

1487 of 1741 municipalities nationwide

Average of similar local governments (V-2): 29.9%

Source: Ministry of Internal Affairs and Communications, Population Census / Basic Resident RegistrationFiscal year: One-person households 2025 Population Census / population aged 65 and over As of 1 January 2026 (Basic Resident Registration)Data updated: 2026-10-12Retrieved: 2026-10-12Jichitai Watch shows two statistics on one card. The share of one-person households comes from the Population Census (every 5 years) and the share of population aged 65 and over from the Basic Resident Registration (annual), so they are updated at different intervals. Whether the card is out of date is judged by the more frequent of the two (annual).

Share of employment by industry

Update frequency: Every 5 years (Population Census)
Primary sector
Share1.01%

86

1596 of 1740 municipalities nationwide

Average of similar local governments (V-2): 4.5%

Secondary sector
Share27.64%

2,346

686 of 1740 municipalities nationwide

Average of similar local governments (V-2): 25.7%

Tertiary sector
Share70.18%

5,958

389 of 1740 municipalities nationwide

Average of similar local governments (V-2): 67.2%

Source: Ministry of Internal Affairs and Communications, Population CensusFiscal year: 2020 Population CensusData updated: 2026-09-28Retrieved: 2026-08-28Jichitai Watch calculated the shares of the primary, secondary and tertiary sectors.

Top three industries by share of employment

Update frequency: Every 5 years (Population Census)
  1. 1Medical, health care and welfare1,936
  2. 2Manufacturing1,861
  3. 3Wholesale and retail trade1,253
Source: Ministry of Internal Affairs and Communications, Population CensusFiscal year: 2020 Population CensusData updated: 2026-09-28Retrieved: 2026-08-28Jichitai Watch selected these automatically in descending order of the number of workers. The order states a fact; it is not a judgement of better or worse.

Ratio of daytime population to nighttime population

Update frequency: Every 5 years (Population Census)

90.7

A value above 100 means the daytime population is larger than the nighttime population

1293 of 1740 municipalities nationwide

Average of similar local governments (V-2): 89.4

Source: Ministry of Internal Affairs and Communications, Population CensusFiscal year: 2020 Population CensusData updated: 2026-09-26Retrieved: 2026-08-28

Taxable income per taxpayer

Update frequency: Annual

¥3,687,000

Taxable income

(per taxpayer, per year)

277 of 1741 municipalities nationwide

Average of similar local governments (V-2): ¥3,452,000