| | Gentry County | MO | 29075 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=GentryCounty+MO |
| | Harrison County | MO | 29081 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=HarrisonCounty+MO |
| | Holt County | MO | 29087 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=HoltCounty+MO |
| | Howard County | MO | 29089 | | Columbia, MO 17860 | Columbia-Jefferson
City-Moberly, MO 190 | Outlying | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=HowardCounty+MO |
| | Knox County | MO | 29103 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=KnoxCounty+MO |
| | Lewis County | MO | 29111 | | Quincy, IL-MO 39500 | Quincy-Hannibal, IL-MO 448 | Outlying | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=LewisCounty+MO |
| | Macon County | MO | 29121 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=MaconCounty+MO |
| | Maries County | MO | 29125 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=MariesCounty+MO |
| | Mercer County | MO | 29129 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=MercerCounty+MO |
| | Monroe County | MO | 29137 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=MonroeCounty+MO |