Licensing rules · Massachusetts
Daycare ratios in Massachusetts
In a Massachusetts daycare center, one adult may care for up to 3 babies, 4 children at 18 months, or 10 children from 35 months through age 4. Rooms are capped at 7 babies, 9 children at 18 months and 20 preschoolers.
- Babies (6 weeks)
- 1:3
- Toddlers (18 months)
- 1:4
- 3-year-olds
- 1:10
- 4-year-olds
- 1:10
Daycare centers
Ratios and group sizes in Massachusetts centers
The most children one adult may care for, and the largest group allowed in one room, at each age. From Massachusetts's licensing rules as compiled in the 2025 national database.
| Child's age | Adults to children | Largest group |
|---|---|---|
| 6 weeks | 1:31 adult for 3 children | 7 children |
| 11 months | 1:31 adult for 3 children | 7 children |
| 18 months | 1:41 adult for 4 children | 9 children |
| 35 months | 1:101 adult for 10 children | 20 children |
| 3 years | 1:101 adult for 10 children | 20 children |
| 4 years | 1:101 adult for 10 children | 20 children |
| 5 years | 1:151 adult for 15 children | 30 children |
| 6 years | 1:131 adult for 13 children | 26 children |
| 7 years | 1:131 adult for 13 children | 26 children |
| 8 to 9 years | 1:131 adult for 13 children | 26 children |
| 10 years and older | 1:131 adult for 13 children | 26 children |
The national database reads each state's rule at these sample ages; Massachusetts's own rules give the exact age bands.
In the room
What the ratio means for your child
A ratio is the most children one adult may care for at the same time. At 1:3 for babies, a full room of 7 infants needs at least 3 caregivers. At 1:10 for preschoolers, a room of 20 needs 2.
Treat the ratio as a floor. Some centers staff above it, others run right at it, and the start and end of the day, when fewer staff are in, are the easiest times to slip. On your tour, count the adults and children in the room yourself.
When a room mixes ages, Massachusetts's rules set the ratio by a ratio written for mixed-age groups.
Home daycares
Rules for home daycares in Massachusetts
Massachusetts family child care homes are licensed and have their own size limit: 6 children, plus a few school-age children. The national database lists no separate rules for group child care homes in Massachusetts.
A home daycare mixes ages, so ask how many babies and toddlers are in the group, whether an assistant ever works with the provider, and who covers when the provider needs a break.
- As the national database records them
- Family child care home (one provider): up to 6 children (plus 4 school-age children).
- Group child care home (two or more providers): no licensing rules listed for this setting in Massachusetts.
Enforcement
How Massachusetts checks these rules
- Centers: Massachusetts reported routine inspections once a year, without notice.
- Family child care homes: routine inspections once a year, without notice.
Inspection schedules are from a 2017 national survey of state licensing agencies.
On the tour
Ask about ratios on a tour
- of the 1,551 Massachusetts daycare websites we read post a staff-to-child ratio
- 4.7%
- How many adults are in my child's room, and how many children?
- How do staff keep track of every child during outdoor play, nap and pick-up?
- Who may pick up my child, and how do you check?
- Is the ratio the same at the start and end of the day, when fewer staff are in?
More questions: the daycare tour checklist.
Questions
Questions about daycare ratios in Massachusetts
What is the infant ratio for daycare centers in Massachusetts?
1:3. One adult may care for up to 3 babies, and a room of babies may hold no more than 7.
What is the toddler ratio in Massachusetts?
1:4 at 18 months, with groups of up to 9, and 1:10 at 35 months, just before age 3, with groups of up to 20.
What is the ratio for 4-year-olds in Massachusetts daycares?
1:10, with up to 20 children in a group. The same ratio applies to 3-year-olds.
How many children can a Massachusetts home daycare have?
A family child care home may care for up to 6 children, plus up to 4 school-age children.
How do I check whether a daycare keeps to the ratio?
Count the adults and children in the room on your tour, and ask the director. Only 4.7% of the 1,551 Massachusetts daycare websites we read post a staff-to-child ratio.
Rules change. Before you rely on a number here, check Massachusetts's current licensing rules or ask the state licensing agency.
Source: National Database of Child Care Licensing Regulations, Office of Child Care, Administration for Children and Families (licensingregulations.acf.hhs.gov), 2025 tables, retrieved October 7, 2026. Website figure: daycare websites read in 2026.