The Carbondale, Illinois, U.S. graticule is located at (37, -89). It encompasses parts of Southern Illinois and South-East Missouri. Some of the Cities in this graticule are(in alphabetical order by state):
- Cairo, Illinois
- Chester, Illinois
- Christopher, Illinois
- Herrin, Illinois
- Murphysboro, Illinois
- Perryville, Illinois
- Cape Girardeau, Missouri
- Chaffee, Missouri
- Jackson, Missouri
- Scott City, Missouri
