Oyama City: child medical expense subsidy
In Oyama City, Tochigi 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.) There is no out-of-pocket charge for insured care, so it is effectively free.
In Tochigi Prefecture, 25 of 25 municipalities cover outpatient care through age 18, and Oyama City is one of them.
Oyama City is one of 25 municipalities in Tochigi 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
- 166,874(Resident register, 2024)
- Share under 15
- 12.6%(2020 census)
For applications, refunds and visits outside the prefecture, check the official website of Oyama City.
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.
Frequently asked questions
Until what age does Oyama City subsidize child medical expenses?
Both outpatient and inpatient care are covered through the end of the fiscal year in which the child turns 18 (end of high-school age) (as of April 1, 2025).
There is no out-of-pocket charge for insured care, so it is effectively free.
Are high school students covered in Oyama City?
Yes. Both outpatient and inpatient care are covered through the end of the fiscal year in which the child turns 18 (the end of the third year of high school).
Does Oyama City apply an income limit?
No (as of April 1, 2025).
Do the conditions differ between outpatient and inpatient care in Oyama City?
No. Both are covered through the end of the fiscal year in which the child turns 18 (end of high-school age); income limit: no; co-payment: no.
Has Oyama City changed its conditions since last year?
No. The national surveys as of April 1, 2024 and April 1, 2025 record the same conditions.
How does Oyama City compare with other municipalities in Tochigi Prefecture?
In Tochigi Prefecture, 25 of 25 municipalities cover outpatient care through age 18, and Oyama City is one of them.
Oyama City is one of 25 municipalities in Tochigi Prefecture that meet all three conditions: coverage through age 18 for both outpatient and inpatient care, no income limit, and no co-payment.
If I move out of Oyama City, do the same conditions apply?
No. The subsidy is run by the municipality you live in, so the new municipality's conditions apply. Check its page on this site, and confirm the procedure on that municipality's official website.
Municipalities of similar size in Tochigi Prefecture: Utsunomiya City, Tochigi City, Ashikaga City, Nasushiobara City, Sano City
Nursery and after-school club waiting lists in Oyama City
Oyama City had 0 children on the nursery waiting list as of April 1, 2026 (3,553 applicants, 3,435 enrolled; 0 waiting a year earlier). After-school clubs had 0 children waiting as of May 1, 2026 (preliminary; 2,373 registered).
| Item | Value | As of |
|---|---|---|
| Nursery waiting list | 0 | Apr 1, 2026 |
| Waiting list a year earlier (April 1, 2025) | 0 | Apr 1, 2025 |
| Nursery applicants | 3,553 | Apr 1, 2026 |
| Children enrolled in nurseries | 3,435 | Apr 1, 2026 |
| After-school club waiting list | 0 | May 1, 2026 (prelim.) |
| After-school club registrations | 2,373 | May 1, 2026 (prelim.) |
"Waiting" follows the national definition: applicants not enrolled, excluding those on parental leave, those who want only a specific facility, and those who have paused their job search. Zero does not guarantee a place at a preferred facility. After-school club figures are preliminary and may be revised.
Source: Children and Families Agency, Summary of Nursery Care Status (April 1, 2026) / Children and Families Agency, Status of After-School Clubs (May 1, 2026, preliminary)
Parks, libraries, community centers and nursery schools in Oyama City
Oyama City has 175 urban parks (154.8 ha), or 9.3 m² per resident (Rank 20 of 25 in the prefecture). It has 4 libraries, 10 community centers, 32 nursery schools and 24 elementary schools.
Urban parks: MLIT inventory as of March 31, 2025. Libraries and community centers: e-Stat, 2021. Nursery and elementary schools: e-Stat.
| Item | Value | Rank in prefecture | As of |
|---|---|---|---|
| Urban parks | 175 | Rank 3 of 25 in the prefecture | Mar 31, 2025 |
| Urban park area | 154.8 ha | — | Mar 31, 2025 |
| Urban park area per residentDivided by the population of the city-planning area (MLIT's calculation) | 9.3 m² | Rank 20 of 25 in the prefecture | Mar 31, 2025 |
| Libraries | 4 | Rank 22 of 25 in the prefecture | 2021 |
| Community centers | 10 | — | 2021 |
| Nursery schools | 32 | Rank 13 of 25 in the prefecture | 2023 |
| Kindergartens | 3 | — | 2024 |
| Elementary schools | 24 | — | 2024 |
Source: MLIT, Inventory of Urban Parks (end of FY2024, as of March 31, 2025) / e-Stat, Statistical Observations of Municipalities 2026 (Statistics Bureau of Japan)
Population, share of children, net migration and doctors in Oyama City
- PopulationResident register, 2024
- 166,874Rank 2 of 25 in the prefecture2024
- Share under 15
- 12.6%Rank 6 of 25 in the prefecture2020 census
- Share 65 and over
- 25.1%2020 census
- Share of foreign residents
- 3.6%2020 census
- Net migration (move-ins minus move-outs)2024. A positive number means more people moved in than moved out
- +415Rank 4 of 25 in the prefecture2024
- Births per 1,000 residents
- 6.0Rank 4 of 25 in the prefecture2023
- Nursery schools
- 322023
- Nursery schools per 1,000 children under 15
- 1.53Rank 13 of 25 in the prefecture2023
- Kindergartens
- 32024
- Elementary schools
- 242024
- Doctors per 10,000 residents
- 15.1Rank 12 of 25 in the prefecture2022
- Clinics per 10,000 residents
- 7.42023
- General hospitals
- 82023
- Owner-occupied homes
- 63.8%2023
- Floor area per dwelling
- 98.9 m²2023
- Fiscal strength indexAbove 1 means local tax revenue covers standard spending
- 0.95Rank 3 of 25 in the prefecture2022
- Restaurants
- 6152021
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 similar-sized municipalities in Tochigi Prefecture
| Municipality | Population | Outpatient until | Income limit | Co-payment (outpatient / inpatient) | Nursery waiting list |
|---|---|---|---|---|---|
| Oyama City | 166,874 | Age 18 | No | No / No | 0 |
| Utsunomiya City | 514,595 | Age 18 | No | No / No | 0 |
| Tochigi City | 153,088 | Age 18 | No | No / No | 0 |
| Ashikaga City | 140,055 | Age 18 | No | No / No | 0 |
| Nasushiobara City | 115,611 | Age 18 | No | No / No | 0 |
| Sano City | 112,988 | Age 18 | No | No / No | 0 |
Outpatient age limit, income limit and co-payment are the national survey values as of April 1, 2025.
Page updated: . You may quote this table. Please credit Machishirabe and the original survey.