| | | Starke County | IN | 18149 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=StarkeCounty+IN |
| | | Switzerland County | IN | 18155 | | | | | nonmetro county (rural) | recreation | https://maps.google.com/?q=SwitzerlandCounty+IN |
| | | Union County | IN | 18161 | | | | | metro county (urban) | nonspecialized | https://maps.google.com/?q=UnionCounty+IN |
| | | Steuben County | IN | 18151 | | Angola, IN 11420 | Fort
Wayne-Huntington-Auburn,
IN 258 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=SteubenCounty+IN |
| | | DeKalb County | IN | 18033 | | Auburn, IN 12140 | Fort
Wayne-Huntington-Auburn,
IN 258 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=DeKalbCounty+IN |
| | | Lawrence County | IN | 18093 | | Bedford, IN 13260 | Bloomington-Bedford, IN 144 | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=LawrenceCounty+IN |
| | | Monroe County | IN | 18105 | | Bloomington, IN 14020 | Bloomington-Bedford, IN 144 | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=MonroeCounty+IN |
| | | Owen County | IN | 18119 | | Bloomington, IN 14020 | Bloomington-Bedford, IN 144 | Outlying | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=OwenCounty+IN |
| | | 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 |
