| # | County | State | # in County | Date Completed |
| 20 | Rowan | NC | 1 | 2015-04-27 |
| 19 | Union | IL | 2 | 2011-10-30 |
| 18 | Todd | KY | 1 | 2011-10-29 |
| 17 | Pope | IL | 1 | 2011-10-29 |
| 16 | Richmond | NY | 1 | 2011-08-30 |
| 15 | Suffolk | NY | 1 | 2011-08-29 |
| 14 | Bristol | MA | 1 | 2011-08-27 |
| 13 | Plymouth | MA | 1 | 2011-08-27 |
| 12 | Providence | RI | 1 | 2011-08-26 |
| 11 | Minidoka | ID | 1 | 2011-07-25 |
| 10 | Bottineau | ND | 1 | 2008-04-28 |
| 9 | Choctaw | MS | 1 | 2008-01-15 |
| 8 | Lincoln | GA | 1 | 2008-01-12 |
| 7 | Stephens | GA | 1 | 2008-01-06 |
| 6 | Newberry | SC | 1 | 2007-12-29 |
| 5 | Hancock | IA | 1 | 2001-06-23 |
| 4 | York | SC | 1 | 2000-11-16 |
| 3 | Spartanburg | SC | 1 | 1998-01-01 |
| 2 | DeKalb | GA | 1 | 1985-06-22 |
| 1 | Adams | WA | 1 | 0000-00-00 |