| | St. Louis city | MO | 29510 | | St. Louis, MO-IL 41180 | St. Louis-St.
Charles-Farmington, MO-IL 476 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=St.Louiscity+MO |
| | Andrew County | MO | 29003 | | St. Joseph, MO-KS 41140 | Kansas City-Overland
Park-Kansas City, MO-KS 312 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=AndrewCounty+MO |
| | Bates County | MO | 29013 | | Kansas City, MO-KS 28140 | Kansas City-Overland
Park-Kansas City, MO-KS 312 | Outlying | metro county (urban) | farm-dependent | https://maps.google.com/?q=BatesCounty+MO |
| | Bollinger County | MO | 29017 | | Cape Girardeau, MO-IL 16020 | Cape Girardeau-Sikeston,
MO-IL 164 | Outlying | metro county (urban) | farm-dependent | https://maps.google.com/?q=BollingerCounty+MO |
| | Caldwell County | MO | 29025 | | Kansas City, MO-KS 28140 | Kansas City-Overland
Park-Kansas City, MO-KS 312 | Outlying | metro county (urban) | farm-dependent | https://maps.google.com/?q=CaldwellCounty+MO |
| | Callaway County | MO | 29027 | | Jefferson City, MO 27620 | Columbia-Jefferson
City-Moberly, MO 190 | Outlying | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=CallawayCounty+MO |
| | Clinton County | MO | 29049 | | Kansas City, MO-KS 28140 | Kansas City-Overland
Park-Kansas City, MO-KS 312 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=ClintonCounty+MO |
| | Cooper County | MO | 29053 | | Columbia, MO 17860 | Columbia-Jefferson
City-Moberly, MO 190 | Outlying | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=CooperCounty+MO |
| | Dallas County | MO | 29059 | | Springfield, MO 44180 | | Outlying | metro county (urban) | farm-dependent | https://maps.google.com/?q=DallasCounty+Missouri |
| | DeKalb County | MO | 29063 | | St. Joseph, MO-KS 41140 | Kansas City-Overland
Park-Kansas City, MO-KS 312 | Outlying | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=DeKalbCounty+MO |