| | Lincoln County | OK | 40081 | | Oklahoma City, OK 36420 | Oklahoma City-Shawnee, OK 416 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=LincolnCounty+OK |
| | Logan County | OK | 40083 | | Oklahoma City, OK 36420 | Oklahoma City-Shawnee, OK 416 | Central | metro county (urban) | mining-dependent | https://maps.google.com/?q=LoganCounty+OK |
| | Love County | OK | 40085 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=LoveCounty+OK |
| | Major County | OK | 40093 | | | | | nonmetro county (rural) | mining-dependent | https://maps.google.com/?q=MajorCounty+OK |
| | Marshall County | OK | 40095 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=MarshallCounty+OK |
| | Mayes County | OK | 40097 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=MayesCounty+OK |
| | McClain County | OK | 40087 | | Oklahoma City, OK 36420 | Oklahoma City-Shawnee, OK 416 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=McClainCounty+OK |
| | McCurtain County | OK | 40089 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=McCurtainCounty+OK |
| | McIntosh County | OK | 40091 | | | | | nonmetro county (rural) | recreation | https://maps.google.com/?q=McIntoshCounty+OK |
| | Murray County | OK | 40099 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=MurrayCounty+OK |