| | Franklin County | MO | 29071 | | St. Louis, MO-IL 41180 | St. Louis-St.
Charles-Farmington, MO-IL 476 | Outlying | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=FranklinCounty+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 |
| | Lafayette County | MO | 29107 | | Kansas City, MO-KS 28140 | Kansas City-Overland
Park-Kansas City, MO-KS 312 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=LafayetteCounty+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 |
| | Lincoln County | MO | 29113 | | St. Louis, MO-IL 41180 | St. Louis-St.
Charles-Farmington, MO-IL 476 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=LincolnCounty+MO |
| | Mississippi County | MO | 29133 | | Sikeston, MO 43460 | Cape Girardeau-Sikeston,
MO-IL 164 | Outlying | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=MississippiCounty+MO |
| | Moniteau County | MO | 29135 | | Jefferson City, MO 27620 | Columbia-Jefferson
City-Moberly, MO 190 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=MoniteauCounty+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 |
| | 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 |
| | Polk County | MO | 29167 | | Springfield, MO 44180 | | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=PolkCounty+Missouri |