| | | 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 |
| | | Brown County | IN | 18013 | | Indianapolis-Carmel-Greenwood,
IN 26900 | Indianapolis-Carmel-Muncie,
IN 294 | Outlying | metro county (urban) | recreation | https://maps.google.com/?q=BrownCounty+IN |
| | | Hamilton County | IN | 18057 | | Indianapolis-Carmel-Greenwood,
IN 26900 | Indianapolis-Carmel-Muncie,
IN 294 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=HamiltonCounty+IN |
| | | Hancock County | IN | 18059 | | Indianapolis-Carmel-Greenwood,
IN 26900 | Indianapolis-Carmel-Muncie,
IN 294 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=HancockCounty+IN |
| | | Hendricks County | IN | 18063 | | Indianapolis-Carmel-Greenwood,
IN 26900 | Indianapolis-Carmel-Muncie,
IN 294 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=HendricksCounty+IN |
| | | Johnson County | IN | 18081 | | Indianapolis-Carmel-Greenwood,
IN 26900 | Indianapolis-Carmel-Muncie,
IN 294 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=JohnsonCounty+IN |
| | | 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 |
| | | Shelby County | IN | 18145 | | Indianapolis-Carmel-Greenwood,
IN 26900 | Indianapolis-Carmel-Muncie,
IN 294 | Outlying | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=ShelbyCounty+IN |
