| | Custer County | NE | 31041 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=CusterCounty+NE |
| | Dakota County | NE | 31043 | | Sioux City, IA-NE-SD 43580 | Sioux City-Le Mars,
IA-NE-SD 512 | Central | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=DakotaCounty+NE |
| | Dawes County | NE | 31045 | | | | | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=DawesCounty+NE |
| | Dawson County | NE | 31047 | | Lexington, NE 30420 | | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=DawsonCounty+NE |
| | Deuel County | NE | 31049 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=DeuelCounty+NE |
| | Dixon County | NE | 31051 | | | | | metro county (urban) | farm-dependent | https://maps.google.com/?q=DixonCounty+NE |
| | Dodge County | NE | 31053 | | Fremont, NE 23340 | Omaha-Fremont, NE-IA 420 | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=DodgeCounty+NE |
| | Douglas County | NE | 31055 | | Omaha, NE-IA 36540 | Omaha-Fremont, NE-IA 420 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=DouglasCounty+NE |
| | Dundy County | NE | 31057 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=DundyCounty+NE |
| | Fillmore County | NE | 31059 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=FillmoreCounty+NE |