| | | Madison County | IN | 18095 | | Indianapolis-Carmel-Greenwood,
IN 26900 | Indianapolis-Carmel-Muncie,
IN 294 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=MadisonCounty+IN |
| | | Marion County | IN | 18097 | | Indianapolis-Carmel-Greenwood,
IN 26900 | Indianapolis-Carmel-Muncie,
IN 294 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=MarionCounty+IN |
| | | Morgan County | IN | 18109 | | Indianapolis-Carmel-Greenwood,
IN 26900 | Indianapolis-Carmel-Muncie,
IN 294 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=MorganCounty+IN |
| | | Newton County | IN | 18111 | Lake County-Porter
County-Jasper County, IN 29414 | Chicago-Naperville-Elgin,
IL-IN 16980 | Chicago-Naperville,
IL-IN-WI 176 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=NewtonCounty+Indiana |
| | | Putnam County | IN | 18133 | | Greencastle, IN 24600 | Indianapolis-Carmel-Muncie,
IN 294 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=PutnamCounty+IN |
| | | Ripley County | IN | 18137 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=RipleyCounty+IN |
| | | Rush County | IN | 18139 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=RushCounty+IN |
| | | St. Joseph County | IN | 18141 | | South Bend-Mishawaka,
IN-MI 43780 | South
Bend-Elkhart-Mishawaka,
IN-MI 515 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=St.JosephCounty+IN |
| | | Spencer County | IN | 18147 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=SpencerCounty+IN |
| | | Starke County | IN | 18149 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=StarkeCounty+IN |
