| | Chatham County | NC | 37037 | | Durham-Chapel Hill, NC 20500 | Raleigh-Durham-Cary, NC 450 | Central | in metro of > 250k
< 1m | nonspecialized | https://maps.google.com/?q=ChathamCounty+NC |
| | Durham County | NC | 37063 | | Durham-Chapel Hill, NC 20500 | Raleigh-Durham-Cary, NC 450 | Central | in metro of > 250k
< 1m | manufacturing-dependent | https://maps.google.com/?q=DurhamCounty+NC |
| | Orange County | NC | 37135 | | Durham-Chapel Hill, NC 20500 | Raleigh-Durham-Cary, NC 450 | Central | in metro of > 250k
< 1m | federal/state
government-dependent | https://maps.google.com/?q=OrangeCounty+NC |
| | Person County | NC | 37145 | | Durham-Chapel Hill, NC 20500 | Raleigh-Durham-Cary, NC 450 | Outlying | in metro of > 250k
< 1m | nonspecialized | https://maps.google.com/?q=PersonCounty+NC |