| 1. | African Letterboxing | 51 | public |
| 2. | Anchorage Crew | 8 | public |
| 3. | The Appalachian Trail | 40 | public |
| 4. | AQ Book Club | 122 | public |
| 5. | Asian Letterboxing | 147 | public |
| 6. | Beer, Wine and other adult drinks | 24 | public |
| 7. | BIA Addicts | 165 | public |
| 8. | Birthday Board! | 28 | public |
| 9. | Bitterroot Boxes | 9 | public |
| 10. | The Bottle Cap Gang | 8 | public |
| 11. | Box Radar | 268 | public |
| 12. | The Boxin People | 3 | public |
| 13. | Boxing at the Big Rock. | 53 | public |
| 14. | Boxing Buddies | 261 | public |
| 15. | Boxing for a cure | 5 | public |
| 16. | The Buckeye Trail | 34 | public |
| 17. | Cakers Unite | 17 | public |
| 18. | Canadian Letterboxing | 755 | public |
| 19. | Caribbean Letterboxing | 73 | public |
| 20. | The Carolina Wars | 31 | public |
| 21. | The Cat Lovers | 51 | public |
| 22. | Catholic and Proud | 18 | public |
| 23. | CCCP - Creative Clue Creation Proletariat | 311 | public |
| 24. | Cheese Lovers | 70 | public |
| 25. | Christians | 80 | public |
| 26. | Cleverly Crafty and Cheap | 52 | public |
| 27. | Clue Tracker | 96 | public |
| 28. | Coupon Savvy | 92 | public |
| 29. | ct letterboxing | 16 | public |
| 30. | Dead Horses, Lemurs, and Kittens | 245 | public |
| 31. | Die Münchner | 1 | public |
| 32. | Doctor Who | 115 | public |
| 33. | Dream Catcher | 31 | public |
| 34. | Dungeons & Dragons | 73 | public |
| 35. | Dutch Country Letterboxing | 53 | public |
| 36. | e-readers | 63 | public |
| 37. | Eastern Europe Letterboxing | 110 | public |
| 38. | Elitist Club | 90 | public |
| 39. | Etsy Fans | 62 | public |
| 40. | Facebook Games | 81 | public |
| 41. | Fungus Amongus | 23 | public |
| 42. | Geocachers | 343 | public |
| 43. | Germ-a-phobes Unite | 8 | public |
| 44. | Ghost Facers | 3 | public |
| 45. | Ghost Hunters United | 36 | public |
| 46. | The Grateful Letterboxers | 473 | public |
| 47. | GREAT POND MOUNTAIN LETTERBOX OF THE MONTH CLUB | 3 | public |
| 48. | GSA & BSA letterboxing | 21 | public |
| 49. | Happy Cake Day Association! | 24 | public |
| 50. | Heavy Metal Or No Metal At All! | 16 | public |
| 51. | Hermit Club | 20 | public |
| 52. | Hobby Box | 56,427 | public |
| 53. | It's Politics as Usual | 32 | public |
| 54. | L & B Songbook | 12 | public |
| 55. | Las Vegas Boxers | 5 | public |
| 56. | LB CON 2 Planning Committee | 124 | public |
| 57. | Left Handers Only | 38 | public |
| 58. | Let's Share | 66 | public |
| 59. | Letterboxing Humanists | 18 | public |
| 60. | Letterboxing Info & More! | 72 | public |
| 61. | Letterboxing Jeepsters | 6 | public |
| 62. | Letterboxing: The Game | 53 | public |
| 63. | LGTBQ Group | 34 | public |
| 64. | LTC Collective | 98 | public |
| 65. | LV Higher Education | 9 | public |
| 66. | May the 4th Be With You, CA | 14 | public |
| 67. | Mexican and Central American Letterboxing | 62 | public |
| 68. | Middle East Letterboxing | 69 | public |
| 69. | Military folks - family & support | 45 | public |
| 70. | Musical Postals | 114 | public |
| 71. | Musicians | 18 | public |
| 72. | Nanowrimo | 34 | public |
| 73. | Nerds Unite!! | 20 | public |
| 74. | Night Owls | 33 | public |
| 75. | Non-Traditional Boxes | 61,217 | public |
| 76. | Nutrisystem Letterboxers | 4 | public |
| 77. | Oceania Letterboxing | 185 | public |
| 78. | OpenStreetMap | 18 | public |
| 79. | Pathtags | 51 | public |
| 80. | Personal "Letterboxing" Challenge | 71 | public |
| 81. | Postcard Tag Threads | 22 | public |
| 82. | Puget Sound Letterboxers | 30 | public |
| 83. | Quilter's Corner | 17 | public |
| 84. | Rock Stashing | 42 | public |
| 85. | Second-Hand LTC Land | 93 | public |
| 86. | Sky's the Limit | 26 | public |
| 87. | SLQ | 58 | public |
| 88. | South American Letterboxing | 51 | public |
| 89. | Special Needs Group | 19 | public |
| 90. | Spokane Chitchat | 30 | public |
| 91. | Stamp Swappers | 337 | public |
| 92. | Starfleet Command | 43 | public |
| 93. | Taphophiles Unite! | 25 | public |
| 94. | tell me something i dont know | 13 | public |
| 95. | Toad Hollow Friends | 56 | public |
| 96. | Tune In & Toon Out - It's Camp Time!!!! | 38 | public |
| 97. | Twilight Addiction | 55 | public |
| 98. | United States Letterboxing | 54,452 | public |
| 99. | Urban Boxers | 143 | public |
| 100. | The Venting Group | 144 | public |
