| | | Jasper County | IN | 18073 | 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=JasperCounty+Indiana |
| | | Lake County | IN | 18089 | Lake County-Porter
County-Jasper County, IN 29414 | Chicago-Naperville-Elgin,
IL-IN 16980 | Chicago-Naperville,
IL-IN-WI 176 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=LakeCounty+Indiana |
| | | 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 |
| | | Porter County | IN | 18127 | Lake County-Porter
County-Jasper County, IN 29414 | Chicago-Naperville-Elgin,
IL-IN 16980 | Chicago-Naperville,
IL-IN-WI 176 | Central | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=PorterCounty+Indiana |
| | | Adams County | IN | 18001 | | Decatur, IN 19540 | Fort
Wayne-Huntington-Auburn,
IN 258 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=AdamsCounty+IN |
| | | Allen County | IN | 18003 | | Fort Wayne, IN 23060 | Fort
Wayne-Huntington-Auburn,
IN 258 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=AllenCounty+IN |
| | | Bartholomew County | IN | 18005 | | Columbus, IN 18020 | Indianapolis-Carmel-Muncie,
IN 294 | Central | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=BartholomewCounty+IN |
| | | Benton County | IN | 18007 | | Lafayette-West Lafayette,
IN 29200 | Lafayette-West
Lafayette-Frankfort, IN 320 | Outlying | metro county (urban) | farm-dependent | https://maps.google.com/?q=BentonCounty+IN |
| | | Blackford County | IN | 18009 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=BlackfordCounty+IN |
| | | Boone County | IN | 18011 | | Indianapolis-Carmel-Greenwood,
IN 26900 | Indianapolis-Carmel-Muncie,
IN 294 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=BooneCounty+IN |
