| | | 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 |
| | | 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 |
| | | Huntington County | IN | 18069 | | Huntington, IN 26540 | Fort
Wayne-Huntington-Auburn,
IN 258 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=HuntingtonCounty+IN |
| | | Noble County | IN | 18113 | | Kendallville, IN 28340 | Fort
Wayne-Huntington-Auburn,
IN 258 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=NobleCounty+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 |
| | | Wells County | IN | 18179 | | Fort Wayne, IN 23060 | Fort
Wayne-Huntington-Auburn,
IN 258 | Outlying | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=WellsCounty+Indiana |
| | | Whitley County | IN | 18183 | | Fort Wayne, IN 23060 | Fort
Wayne-Huntington-Auburn,
IN 258 | Outlying | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=WhitleyCounty+IN |
