| | Alfalfa County | OK | 40003 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=AlfalfaCounty+OK |
| | Atoka County | OK | 40005 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=AtokaCounty+OK |
| | Beaver County | OK | 40007 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=BeaverCounty+OK |
| | Cimarron County | OK | 40025 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=CimarronCounty+OK |
| | Coal County | OK | 40029 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=CoalCounty+OK |
| | Cotton County | OK | 40033 | | Lawton, OK 30020 | Lawton-Duncan, OK 334 | Outlying | metro county (urban) | farm-dependent | https://maps.google.com/?q=CottonCounty+OK |
| | Grant County | OK | 40053 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=GrantCounty+OK |
| | Harmon County | OK | 40057 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=HarmonCounty+OK |
| | Harper County | OK | 40059 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=HarperCounty+OK |
| | Hughes County | OK | 40063 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=HughesCounty+OK |