| | Pemiscot County | MO | 29155 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=PemiscotCounty+MO |
| | Pike County | MO | 29163 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=PikeCounty+MO |
| | Platte County | MO | 29165 | | Kansas City, MO-KS 28140 | Kansas City-Overland
Park-Kansas City, MO-KS 312 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=PlatteCounty+MO |
| | Polk County | MO | 29167 | | Springfield, MO 44180 | | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=PolkCounty+Missouri |
| | 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 |
| | 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 |
| | Ripley County | MO | 29181 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=RipleyCounty+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 |
| | St. Louis County | MO | 29189 | | St. Louis, MO-IL 41180 | St. Louis-St.
Charles-Farmington, MO-IL 476 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=St.LouisCounty+MO |
| | Saline County | MO | 29195 | | Marshall, MO 32180 | | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=SalineCounty+MO |