Sheets of United States, 2006
| Issuer | Date | Desc | State | ||
| - |  |
United States | 1/3/2006 | empty sheet (#3000) | incomplete |
| - |  |
United States | 1/10/2006 | Children's Book Animals, sheet of 8 types | all added |
| - |  |
United States | 1/29/2006 | Year of the Dog 2006, sheet of 12 types | |
| - | no image | United States | 3/8/2006 | empty sheet (#3002) | incomplete |
| - |  |
United States | 3/16/2006 | sheet of 8, 5 types | all added |
| - |  |
United States | 5/1/2006 | sheet of 1 type | incomplete |
| - |  |
United States | 5/27/2006 | Wonders of America 2006, sheet of 40 types | incomplete |
| - |  |
United States | 5/28/2006 | sheet of 1 type | incomplete |
| - |  |
United States | 5/29/2006 | Washington 2006 Exhibition, sheet of 3 types | |
| - |  |
United States | 5/30/2006 | Distinguished American Diplomats, sheet of 6 types | |
| - |  |
United States | 7/20/2006 | DC Comics Super Heroes, sheet of 20 types | |
| - |  |
United States | 8/24/2006 | empty sheet (#3010) | incomplete |
| - |  |
United States | 10/4/2006 | Southern Florida Wetland, sheet of 10 types | |
| - |  |
United States | 10/5/2006 | empty sheet (#3012) | incomplete |