| Rank | Average Family Size ▼ | School District / Population |
| 1. | 3.82 | Central Falls School District / 18,869 |
| 2. | 3.60 | Providence School District / 172,519 |
| 3. | 3.48 | Burrillville School District / 16,513 |
| 4. | 3.39 | Pawtucket School District / 72,437 |
| 5. | 3.32 | Lincoln School District / 22,010 |
| 6. | 3.32 | Glocester Elementary School District / 10,529 |
| 7. | 3.31 | Barrington School District / 16,455 |
| 8. | 3.30 | Foster-Glocester Regional School District / 15,028 |
| 9. | 3.30 | Scituate School District / 10,860 |
| 10. | 3.29 | Woonsocket School District / 43,643 |
| 11. | 3.28 | Cumberland School District / 34,211 |
| 12. | 3.28 | Foster Elementary School District / 4,499 |
| 13. | 3.26 | Cranston School District / 80,403 |
| 14. | 3.22 | Johnston School District / 28,704 |
| 15. | 3.20 | Exeter-West Greenwich Regional School District / 12,581 |
| 16. | 3.20 | East Greenwich School District / 13,385 |
| 17. | 3.20 | East Providence School District / 48,801 |
| 18. | 3.18 | North Kingstown School District / 26,710 |
| 19. | 3.17 | Name N/A / 36,662 |
| 20. | 3.16 | Coventry School District / 34,739 |
| 21. | 3.14 | South Kingstown School District / 29,243 |
| 22. | 3.12 | West Warwick School District / 29,446 |
| 23. | 3.10 | Smithfield School District / 21,254 |
| 24. | 3.10 | North Smithfield School District / 11,341 |
| 25. | 3.10 | Warwick School District / 85,383 |
| 26. | 3.10 | North Providence School District / 32,807 |
| 27. | 3.08 | Bristol-Warren Regional School District / 33,567 |
| 28. | 3.05 | Middletown School District / 16,308 |
| 29. | 3.03 | Westerly School District / 23,418 |
| 30. | 3.01 | Chariho Regional School District / 23,823 |
| 31. | 3.01 | Tiverton School District / 15,092 |
| 32. | 3.00 | Portsmouth School District / 17,006 |
| 33. | 2.91 | Jamestown School District / 5,513 |
| 34. | 2.91 | Little Compton School District / 3,540 |
| 35. | 2.89 | Newport School District / 24,234 |
| 36. | 2.88 | Narragansett School District / 16,578 |
| 37. | 2.67 | New Shoreham School District / 960 |
Please note that we only rank locations with 'Average Family Size' data. The rank above might not be a complete list. Locations without 'Average Family Size' data are not listed.
*ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.
