Kosai City
In Kosai City, Shizuoka Prefecture, the child medical expense subsidy covers both outpatient and inpatient care through the end of the fiscal year in which the child turns 18 (end of high-school age). Income limit: none. Co-payment: none. (As of April 1, 2025, Children and Families Agency survey.)
In Shizuoka Prefecture, 35 of 35 municipalities cover outpatient care through age 18, and Kosai City is one of them.
Kosai City is one of 31 municipalities in Shizuoka Prefecture that meet all three conditions: coverage through age 18 for both outpatient and inpatient care, no income limit, and no co-payment.
Municipalities call this program by different names (小児医療費助成, こども医療費助成, 乳幼児医療費助成, 子育て支援医療). This site uses the national survey's term, "child medical expense subsidy".
- Covered until (Outpatient)
- Age 18(April 1, 2025)
- Covered until (Inpatient)
- Age 18(April 1, 2025)
- Income limit
- No(April 1, 2025)
- Co-payment
- No(April 1, 2025)
- Coverage through age 18
- Yes(April 1, 2025)
- Population
- 57,216(Resident register, 2024)
- Share under 15
- 12.0%(2020 census)
Child medical expense subsidy
| Item | Outpatient | Inpatient |
|---|---|---|
| Covered until | Age 18 through the end of the fiscal year in which the child turns 18 (end of high-school age) | Age 18 through the end of the fiscal year in which the child turns 18 (end of high-school age) |
| Income limit | No | No |
| Co-payment | No | No |
No change since April 1, 2024
Source: Children and Families Agency, Survey on Municipal Child Medical Expense Subsidies (municipal form, attachment 3) (As of April 1, 2025). Last checked September 24, 2026
The national survey records conditions as of April 1 and is published in December. Some municipalities have expanded coverage since then. Confirm the current conditions on the municipality's official website.
Key figures
- PopulationResident register, 2024
- 57,216Rank 15 of 35 in the prefecture2024
- Share under 15
- 12.0%Rank 17 of 35 in the prefecture2020 census
- Share 65 and over
- 27.8%2020 census
- Share of foreign residents
- 5.7%2020 census
- Net migration (move-ins minus move-outs)2024. A positive number means more people moved in than moved out
- -292Rank 25 of 35 in the prefecture2024
- Births per 1,000 residents
- 4.9Rank 17 of 35 in the prefecture2023
- Nursery schools
- 42023
- Nursery schools per 1,000 children under 15
- 0.57Rank 32 of 35 in the prefecture2023
- Kindergartens
- 22024
- Elementary schools
- 62024
- Doctors per 10,000 residents
- 10.5Rank 30 of 35 in the prefecture2022
- Clinics per 10,000 residents
- 7.02023
- General hospitals
- 22023
- Owner-occupied homes
- 68.6%2023
- Floor area per dwelling
- 114.8 m²2023
- Fiscal strength indexAbove 1 means local tax revenue covers standard spending
- 1.00Rank 4 of 35 in the prefecture2022
- Restaurants
- 1612021
Source: e-Stat, Statistical Observations of Municipalities 2026 (Statistics Bureau of Japan)
"—" means e-Stat has no value for this item (the Housing and Land Survey does not cover towns and villages).
Compare with municipalities in the same prefecture (by population)
- Shimada City94,747
- Fukuroi City87,941
- Gotemba City83,487
- Ito City64,438
- Susono City48,688
- Kikugawa City47,179
- Izunokuni City45,983
- Nagaizumi Town43,705
Page updated: . You may quote this table. Please credit Machishirabe and the original survey.