By collective bargaining coverage
| State | Gap | Rate |
|---|---|---|
| AL | 2.1 | 64.2 |
| AK | -4.3 | 91.2 |
| AZ | 6.1 | 47.0 |
| AR | 3.5 | 28.4 |
| CA | 4.6 | 89.1 |
| CO | 3.6 | 66.8 |
| CT | 19.4 | 89.6 |
| DE | 2.8 | 79.5 |
| DC | 6.9 | 68.0 |
| FL | 3.7 | 57.4 |
| GA | 2.7 | 31.3 |
| HI | 2.7 | 87.6 |
| ID | 4.8 | 57.0 |
| IL | -1.1 | 89.4 |
| IN | 3.9 | 80.5 |
| IA | 5.2 | 78.1 |
| KS | .6 | 69.6 |
| KY | 2.5 | 56.2 |
| LA | 1.4 | 35.4 |
| ME | -1.0 | 86.6 |
| MD | 11.3 | 81.7 |
| MA | -2.6 | 94.6 |
| MI | -1.3 | 91.9 |
| MN | 10.8 | 90.5 |
| MS | 1.1 | 29.8 |
| MO | 4.0 | 54.1 |
| MT | 2.0 | 85.5 |
| NE | 12.0 | 73.4 |
| NV | 2.9 | 70.0 |
| NH | 11.7 | 84.5 |
| NJ | -4.9 | 89.5 |
| NM | -.6 | 55.4 |
| NY | 9.0 | 92.5 |
| NC | 2.4 | 23.8 |
| ND | -9.1 | 69.3 |
| OH | -5.0 | 85.7 |
| OK | 0.0 | 49.7 |
| OR | 5.6 | 91.2 |
| PA | 9.6 | 91.1 |
| RI | -5.8 | 92.4 |
| SC | 1.5 | 26.9 |
| SD | -2.8 | 43.5 |
| TN | .2 | 43.1 |
| TX | 2.1 | 41.2 |
| UT | -.9 | 56.5 |
| VT | 2.4 | 87.6 |
| VA | 14.9 | 36.0 |
| WA | 6.1 | 86.3 |
| WV | 2.3 | 65.2 |
| WI | -.4 | 86.1 |
| WY | -6.1 | 42.6 |