| | Randolph County | IN | 18135 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=RandolphCounty+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 |
| | 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 |
| | 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 |
| | Switzerland County | IN | 18155 | | | | | nonmetro county (rural) | recreation | https://maps.google.com/?q=SwitzerlandCounty+IN |
| | Tipton County | IN | 18159 | | Indianapolis-Carmel-Greenwood,
IN 26900 | Indianapolis-Carmel-Muncie,
IN 294 | Outlying | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=TiptonCounty+IN |
| | Wabash County | IN | 18169 | | Wabash, IN 47340 | | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=WabashCounty+IN |
| | Warren County | IN | 18171 | | Lafayette-West Lafayette,
IN 29200 | Lafayette-West
Lafayette-Frankfort, IN 320 | Outlying | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=WarrenCounty+IN |