| | St. Francois County | MO | 29187 | | Farmington, MO 22100 | St. Louis-St.
Charles-Farmington, MO-IL 476 | Central | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=St.FrancoisCounty+MO |
| | Ste. Genevieve County | MO | 29186 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=Ste.GenevieveCounty+MO |
| | St. Clair County | MO | 29185 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=St.ClairCounty+MO |
| | St. Charles County | MO | 29183 | | St. Louis, MO-IL 41180 | St. Louis-St.
Charles-Farmington, MO-IL 476 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=St.CharlesCounty+MO |
| | Ripley County | MO | 29181 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=RipleyCounty+MO |
| | Reynolds County | MO | 29179 | | | | | nonmetro county (rural) | mining-dependent | https://maps.google.com/?q=ReynoldsCounty+MO |
| | Ray County | MO | 29177 | | Kansas City, MO-KS 28140 | Kansas City-Overland
Park-Kansas City, MO-KS 312 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=RayCounty+MO |
| | Randolph County | MO | 29175 | | Moberly, MO 33620 | Columbia-Jefferson
City-Moberly, MO 190 | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=RandolphCounty+MO |
| | Ralls County | MO | 29173 | | Hannibal, MO 25300 | Quincy-Hannibal, IL-MO 448 | Outlying | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=RallsCounty+MO |
| | Putnam County | MO | 29171 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=PutnamCounty+MO |