| overlap the boundary of… | 0.30 |
| change over time | 0.25 |
| subdivide county | 0.25 |
| extend into more than o… | 0.25 |
| unchanged | 0.59 |
| contiguous | 0.43 |
| coterminous | 0.40 |
| identical | 0.34 |
| coextensive | 0.30 |
| unclear | 0.25 |
| arbitrary | 0.25 |
| drawn | 0.72 |
| altered | 0.68 |
| established | 0.66 |
| expanded | 0.50 |
| determined for new five… | 0.40 |
| set | 0.38 |
| fixed by responsible st… | 0.30 |
| aligned with historic c… | 0.25 |
| reformed in the 1990s | 0.25 |
| the 1980 census | 0.25 |