| | | Adair County | OK | 40001 | | | | | not in metro; pop <
5k; metro-adjacent | manufacturing-dependent | https://maps.google.com/?q=AdairCounty+OK |
| | | Alfalfa County | OK | 40003 | | | | | not in metro; pop <
5k; metro-adjacent | farm-dependent | https://maps.google.com/?q=AlfalfaCounty+OK |
| | | Atoka County | OK | 40005 | | | | | not in metro; pop <
5k; non-metro-adjacent | farm-dependent | https://maps.google.com/?q=AtokaCounty+OK |
| | | Beaver County | OK | 40007 | | | | | not in metro; pop <
5k; non-metro-adjacent | farm-dependent | https://maps.google.com/?q=BeaverCounty+OK |
| | | Beckham County | OK | 40009 | | Elk City, OK 21120 | Weatherford-Elk City, OK 555 | Central | not in metro; pop > 5K
< 20k;
non-metro-adjacent | mining-dependent | https://maps.google.com/?q=BeckhamCounty+OK |
| | | Blaine County | OK | 40011 | | | | | not in metro; pop <
5k; metro-adjacent | mining-dependent | https://maps.google.com/?q=BlaineCounty+OK |
| | | Bryan County | OK | 40013 | | Durant, OK 20460 | Dallas-Fort Worth, TX-OK 206 | Central | not in metro; pop > 5k
< 20k; metro-adjacent | nonspecialized | https://maps.google.com/?q=BryanCounty+OK |
| | | Caddo County | OK | 40015 | | | | | not in metro; pop > 5k
< 20k; metro-adjacent | nonspecialized | https://maps.google.com/?q=CaddoCounty+OK |
| | | Canadian County | OK | 40017 | | Oklahoma City, OK 36420 | Oklahoma City-Shawnee, OK 416 | Central | in metro of > 1m | nonspecialized | https://maps.google.com/?q=CanadianCounty+OK |
| | | Carter County | OK | 40019 | | Ardmore, OK 11620 | | Central | not in metro; pop
>20k; non-metro
adjacent | mining-dependent | https://maps.google.com/?q=CarterCounty+OK |
