| | Marion County | AL | 01093 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=MarionCounty+AL |
| | Marengo County | AL | 01091 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=MarengoCounty+AL |
| | Madison County | AL | 01089 | | Huntsville, AL 26620 | Huntsville-Decatur-Albertville,
AL-TN 290 | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=MadisonCounty+AL |
| | Macon County | AL | 01087 | | Auburn-Opelika, AL 12220 | Columbus-Auburn-Opelika,
GA-AL 194 | Outlying | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=MaconCounty+AL |
| | Lowndes County | AL | 01085 | | Montgomery, AL 33860 | Montgomery-Selma, AL 388 | Outlying | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=LowndesCounty+AL |
| | Limestone County | AL | 01083 | | Huntsville, AL 26620 | Huntsville-Decatur-Albertville,
AL-TN 290 | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=LimestoneCounty+AL |
| | Lee County | AL | 01081 | | Auburn-Opelika, AL 12220 | Columbus-Auburn-Opelika,
GA-AL 194 | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=LeeCounty+AL |
| | Lawrence County | AL | 01079 | | Decatur, AL 19460 | Huntsville-Decatur-Albertville,
AL-TN 290 | Outlying | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=LawrenceCounty+AL |
| | Lauderdale County | AL | 01077 | | Florence-Muscle Shoals,
AL 22520 | Florence-Muscle
Shoals-Russellville, AL 250 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=LauderdaleCounty+AL |
| | Lamar County | AL | 01075 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=LamarCounty+AL |