| | Newton County | AR | 05101 | | Harrison, AR 25460 | | Outlying | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=NewtonCounty+AR |
| | Ouachita County | AR | 05103 | | Camden, AR 15780 | | Central | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=OuachitaCounty+AR |
| | Phillips County | AR | 05107 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=PhillipsCounty+Arkansas |
| | Pike County | AR | 05109 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=PikeCounty+AR |
| | Polk County | AR | 05113 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=PolkCounty+AR |
| | Pope County | AR | 05115 | | Russellville, AR 40780 | | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=PopeCounty+AR |
| | Prairie County | AR | 05117 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=PrairieCounty+AR |
| | Randolph County | AR | 05121 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=RandolphCounty+AR |
| | Scott County | AR | 05127 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=ScottCounty+AR |
| | Searcy County | AR | 05129 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=SearcyCounty+AR |