| | Morgan County | MO | 29141 | | | | | nonmetro county (rural) | recreation | https://maps.google.com/?q=MorganCounty+MO |
| | New Madrid County | MO | 29143 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=NewMadridCounty+MO |
| | Newton County | MO | 29145 | | Joplin, MO-KS 27900 | Joplin-Miami, MO-OK-KS 309 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=NewtonCounty+MO |
| | Nodaway County | MO | 29147 | | Maryville, MO 32340 | | Central | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=NodawayCounty+MO |
| | Oregon County | MO | 29149 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=OregonCounty+MO |
| | Osage County | MO | 29151 | | Jefferson City, MO 27620 | Columbia-Jefferson
City-Moberly, MO 190 | Outlying | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=OsageCounty+MO |
| | Ozark County | MO | 29153 | | | | | nonmetro county (rural) | recreation | https://maps.google.com/?q=OzarkCounty+MO |
| | Pemiscot County | MO | 29155 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=PemiscotCounty+MO |
| | Perry County | MO | 29157 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=PerryCounty+MO |
| | Pettis County | MO | 29159 | | Sedalia, MO 42740 | | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=PettisCounty+MO |