| | Sebastian County | AR | 05131 | | Fort Smith, AR-OK 22900 | | Central | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=SebastianCounty+AR |
| | Sevier County | AR | 05133 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=SevierCounty+AR |
| | Sharp County | AR | 05135 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=SharpCounty+AR |
| | Stone County | AR | 05137 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=StoneCounty+AR |
| | Union County | AR | 05139 | | El Dorado, AR 20980 | | Central | nonmetro county (rural) | mining-dependent | https://maps.google.com/?q=UnionCounty+AR |
| | Van Buren County | AR | 05141 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=VanBurenCounty+AR |
| | Washington County | AR | 05143 | | Fayetteville-Springdale-Rogers,
AR-MO 22220 | | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=WashingtonCounty+AR |
| | Woodruff County | AR | 05147 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=WoodruffCounty+AR |
| | Yell County | AR | 05149 | | Russellville, AR 40780 | | Outlying | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=YellCounty+AR |
| | Garland County | AR | 05051 | | Hot Springs, AR 26300 | Hot Springs-Malvern, AR 284 | Central | metro county (urban) | recreation | https://maps.google.com/?q=GarlandCounty+AR |