Percentage of Workers Represented by unions, 2009
| Rank | State | Percent of employed represented by unions | Rank | State | Percent of
employed represented by unions |
|
| 1 | New York | 27.2 | 27 | Indiana | 12.2 | |
| 2 | Hawaii | 24.3 | 28 | Alabama | 12.0 | |
| 3 | Alaska | 23.6 | 29 | Nebraska | 11.4 | |
| 4 | Washington | 21.5 | 30 | Missouri | 10.6 | |
| 5 | Michigan | 19.9 | 31 | Kentucky | 10.5 | |
| 6 | New Jersey | 19.9 | 32 | New Mexico | 10.2 | |
| 7 | Rhode Island | 18.7 | 33 | North Dakota | 9.8 | |
| 8 | Oregon | 18.5 | 34 | Kansas | 8.4 | |
| 9 | Connecticut | 18.4 | 35 | Colorado | 8.3 | |
| 10 | California | 18.3 | 36 | Wyoming | 8.3 | |
| 11 | Illinois | 18.3 | 37 | Utah | 8.0 | |
| 12 | Montana | 18.1 | 38 | Arizona | 7.9 | |
| 13 | Massachusetts | 18.0 | 39 | Idaho | 7.9 | |
| 14 | Nevada | 17.2 | 40 | Oklahoma | 7.3 | |
| 15 | Pennsylvania | 16.2 | 41 | Florida | 6.9 | |
| 16 | Wisconsin | 15.8 | 42 | South Dakota | 6.6 | |
| 17 | Minnesota | 15.7 | 43 | Tennessee | 6.6 | |
| 18 | Ohio | 15.4 | 44 | Louisiana | 6.5 | |
| 19 | West Virginia | 15.4 | 45 | Mississippi | 6.4 | |
| 20 | Maryland | 14.3 | 46 | Texas | 6.2 | |
| 21 | Vermont | 14.1 | 47 | Georgia | 5.9 | |
| 22 | Maine | 13.7 | 48 | South Carolina | 5.4 | |
| 23 | Iowa | 13.3 | 49 | Virginia | 5.4 | |
| 24 | Delaware | 12.8 | 50 | Arkansas | 5.0 | |
| 25 | District of Columbia | 12.5 | 51 | North Carolina | 4.4 | |
| 26 | New Hampshire | 12.3 | ||||
