| | Pennington County | MN | 27113 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=PenningtonCounty+MN |
| | Otter Tail County | MN | 27111 | | Fergus Falls, MN 22260 | | Central | nonmetro county (rural) | recreation | https://maps.google.com/?q=OtterTailCounty+MN |
| | Olmsted County | MN | 27109 | | Rochester, MN 40340 | Rochester-Austin-Winona,
MN 462 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=OlmstedCounty+MN |
| | Norman County | MN | 27107 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=NormanCounty+MN |
| | Nobles County | MN | 27105 | | Worthington, MN 49380 | | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=NoblesCounty+MN |
| | Nicollet County | MN | 27103 | | Mankato, MN 31860 | Mankato-New Ulm, MN 359 | Central | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=NicolletCounty+MN |
| | Murray County | MN | 27101 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=MurrayCounty+MN |
| | Mower County | MN | 27099 | | Austin, MN 12380 | Rochester-Austin-Winona,
MN 462 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=MowerCounty+MN |
| | Morrison County | MN | 27097 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=MorrisonCounty+MN |
| | Mille Lacs County | MN | 27095 | | Minneapolis-St.
Paul-Bloomington, MN-WI 33460 | Minneapolis-St. Paul,
MN-WI 378 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=MilleLacsCounty+MN |