| | Chariton County | MO | 29041 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=CharitonCounty+MO |
| | Christian County | MO | 29043 | | Springfield, MO 44180 | | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=ChristianCounty+Missouri |
| | Clark County | MO | 29045 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=ClarkCounty+MO |
| | Crawford County | MO | 29055 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=CrawfordCounty+MO |
| | Dade County | MO | 29057 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=DadeCounty+MO |
| | Dallas County | MO | 29059 | | Springfield, MO 44180 | | Outlying | metro county (urban) | farm-dependent | https://maps.google.com/?q=DallasCounty+Missouri |
| | Daviess County | MO | 29061 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=DaviessCounty+MO |
| | Dent County | MO | 29065 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=DentCounty+MO |
| | Douglas County | MO | 29067 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=DouglasCounty+MO |
| | Dunklin County | MO | 29069 | | Kennett, MO 28380 | | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=DunklinCounty+MO |