| | 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 |
| | 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 |
| | Marshall County | AL | 01095 | | Albertville, AL 10700 | Huntsville-Decatur-Albertville,
AL-TN 290 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=MarshallCounty+AL |
| | Mobile County | AL | 01097 | | Mobile, AL 33660 | Mobile-Daphne-Fairhope,
AL 380 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=MobileCounty+AL |
| | Montgomery County | AL | 01101 | | Montgomery, AL 33860 | Montgomery-Selma, AL 388 | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=MontgomeryCounty+AL |
| | Morgan County | AL | 01103 | | Decatur, AL 19460 | Huntsville-Decatur-Albertville,
AL-TN 290 | Central | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=MorganCounty+AL |
| | Pike County | AL | 01109 | | Troy, AL 45980 | | Central | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=PikeCounty+AL |
| | Russell County | AL | 01113 | | Columbus, GA-AL 17980 | Columbus-Auburn-Opelika,
GA-AL 194 | Central | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=RussellCounty+AL |
| | St. Clair County | AL | 01115 | | Birmingham, AL 13820 | Birmingham-Cullman-Talladega,
AL 142 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=St.ClairCounty+AL |
| | Shelby County | AL | 01117 | | Birmingham, AL 13820 | Birmingham-Cullman-Talladega,
AL 142 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=ShelbyCounty+AL |