| Rank | Average Family Size ▼ | School District / Population |
| 1. | 4.82 | Fremont County School District 14 / 2,585 |
| 2. | 4.15 | Fremont County School District 21 / 1,882 |
| 3. | 3.92 | Fremont County School District 38 / 1,615 |
| 4. | 3.54 | Uinta County School District 1 / 14,712 |
| 5. | 3.53 | Teton County School District 1 / 21,326 |
| 6. | 3.45 | Uinta County School District 6 / 3,031 |
| 7. | 3.40 | Lincoln County School District 2 / 13,638 |
| 8. | 3.38 | Sublette County School District 9 / 3,908 |
| 9. | 3.35 | Laramie County School District 2 / 4,991 |
| 10. | 3.24 | Uinta County School District 4 / 3,199 |
| 11. | 3.24 | Big Horn County School District 1 / 2,993 |
| 12. | 3.24 | Sweetwater County School District 2 / 13,499 |
| 13. | 3.23 | Platte County School District 2 / 1,475 |
| 14. | 3.23 | Campbell County School District 1 / 45,840 |
| 15. | 3.22 | Big Horn County School District 2 / 3,613 |
| 16. | 3.19 | Carbon County School District 1 / 11,026 |
| 17. | 3.19 | Washakie County School District 1 / 7,762 |
| 18. | 3.17 | Sublette County School District 1 / 6,854 |
| 19. | 3.14 | Fremont County School District 25 / 17,259 |
| 20. | 3.13 | Sweetwater County School District 1 / 30,275 |
| 21. | 3.08 | Laramie County School District 1 / 86,728 |
| 22. | 3.08 | Converse County School District 2 / 4,418 |
| 23. | 3.05 | Natrona County School District 1 / 75,876 |
| 24. | 3.05 | Fremont County School District 1 / 11,112 |
| 25. | 3.04 | Platte County School District 1 / 7,287 |
| 26. | 3.00 | Converse County School District 1 / 9,361 |
| 27. | 3.00 | Park County School District 1 / 12,148 |
| 28. | 2.99 | Lincoln County School District 1 / 3,625 |
| 29. | 2.99 | Goshen County School District 1 / 13,192 |
| 30. | 2.97 | Big Horn County School District 4 / 1,963 |
| 31. | 2.94 | Albany County School District 1 / 36,186 |
| 32. | 2.94 | Weston County School District 1 / 5,698 |
| 33. | 2.93 | Crook County School District 1 / 7,036 |
| 34. | 2.93 | Sheridan County School District 3 / 383 |
| 35. | 2.93 | Weston County School District 7 / 1,454 |
| 36. | 2.92 | Sheridan County School District 2 / 23,641 |
| 37. | 2.87 | Big Horn County School District 3 / 3,166 |
| 38. | 2.86 | Park County School District 16 / 834 |
| 39. | 2.85 | Johnson County School District 1 / 8,564 |
| 40. | 2.83 | Niobrara County School District 1 / 2,478 |
| 41. | 2.82 | Park County School District 6 / 14,647 |
| 42. | 2.81 | Sheridan County School District 1 / 5,073 |
| 43. | 2.80 | Hot Springs County School District 1 / 4,791 |
| 44. | 2.79 | Fremont County School District 6 / 2,300 |
| 45. | 2.72 | Name N/A / 475 |
| 46. | 2.70 | Fremont County School District 24 / 1,565 |
| 47. | 2.70 | Carbon County School District 2 / 4,871 |
| 48. | 2.56 | Washakie County School District 2 / 663 |
| 49. | 2.55 | Fremont County School District 2 / 1,785 |
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.
