| Rank | Average Family Size ▼ | School District / Population |
| 1. | 3.65 | Central Falls School District / 19,374 |
| 2. | 3.56 | Providence School District / 178,185 |
| 3. | 3.38 | Foster Elementary School District / 4,601 |
| 4. | 3.29 | Woonsocket School District / 41,244 |
| 5. | 3.26 | Pawtucket School District / 71,246 |
| 6. | 3.26 | Foster-Glocester Regional School District / 14,383 |
| 7. | 3.25 | Barrington School District / 16,352 |
| 8. | 3.20 | Cranston School District / 80,446 |
| 9. | 3.20 | Glocester Elementary School District / 9,782 |
| 10. | 3.18 | Johnston School District / 28,826 |
| 11. | 3.17 | East Greenwich School District / 13,142 |
| 12. | 3.17 | Coventry School District / 35,015 |
| 13. | 3.16 | Cumberland School District / 33,547 |
| 14. | 3.15 | Lincoln School District / 21,138 |
| 15. | 3.15 | Smithfield School District / 21,472 |
| 16. | 3.14 | East Providence School District / 47,145 |
| 17. | 3.14 | Burrillville School District / 16,000 |
| 18. | 3.11 | Exeter-West Greenwich Regional School District / 12,731 |
| 19. | 3.10 | Name N/A / 36,025 |
| 20. | 3.09 | Scituate School District / 10,343 |
| 21. | 3.08 | Warwick School District / 82,698 |
| 22. | 3.08 | North Kingstown School District / 26,416 |
| 23. | 3.06 | North Smithfield School District / 11,932 |
| 24. | 3.05 | West Warwick School District / 29,130 |
| 25. | 3.04 | Middletown School District / 16,151 |
| 26. | 3.04 | Chariho Regional School District / 23,646 |
| 27. | 3.03 | North Providence School District / 32,133 |
| 28. | 3.02 | Portsmouth School District / 17,327 |
| 29. | 2.99 | South Kingstown School District / 30,468 |
| 30. | 2.98 | Westerly School District / 22,787 |
| 31. | 2.95 | Tiverton School District / 15,738 |
| 32. | 2.93 | Narragansett School District / 15,862 |
| 33. | 2.91 | Little Compton School District / 3,491 |
| 34. | 2.90 | Bristol-Warren Regional School District / 33,444 |
| 35. | 2.86 | New Shoreham School District / 863 |
| 36. | 2.83 | Jamestown School District / 5,420 |
| 37. | 2.83 | Newport School District / 24,376 |
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.
