| Name: | River Bend Astronomy Club |
| Address: | 132 Jessica Drive, St. Jacob, IL 62281 - serves both Missouri and Illinois |
| Contact: | Gary W. Kronk |
| Phone: | |
| Email: | riverbendastro@att.net |
| URL: | |
| Members: | |
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| Name: | Rockford Amateur Astronomers |
| Address: | Lockwood Park Observatory 5209 Safford Rd. Rockford, IL 61101 |
| Contact: | Tony Aubuchon |
| Phone: | 815-964-6457 |
| Email: | T_Aubuchon@comcast.net |
| URL: | |
| Members: | 40 |
|
| Name: | Ryerson Astronomical Society |
| Address: | Box 8, 1100 E. 58th St., Chicago, IL 60637 USA |
| Contact: | Dean W. Armstrong |
| Phone: | 312-702-3147 |
| Email: | astro-request@lists.uchicago.edu |
| URL: | |
| Members: | 15 members |
|
| Name: | Sangamon Astronomical Society |
| Address: | 4501 Greenbriar Drive, Springfield, IL 62707 USA |
| Contact: | Anthony Hopp |
| Phone: | 217-741-0234 |
| Email: | ahopp@eosinc.com |
| URL: | |
| Members: | 22 members |
|
| Name: | Skokie Valley Astronomers (meetings in Deerfield) |
| Address: | 1 S. 751 Avon Dr., Warrenville, IL 60555 USA |
| Contact: | Gretchen Patti |
| Phone: | 630-393-7929 |
| Email: | gpatti@Tezzaron.com |
| URL: | |
| Members: | 45 members |
|
| Name: | St. Louis Astronomical Society |
| Address: | 911 Landgon St., Alton, IL 62002 USA |
| Contact: | Stephen Sands |
| Phone: | 618-465-1463 |
| Email: | swsands@home.com |
| URL: | |
| Members: | 250 members |
|
| Name: | Twin City Amateur Astronomers |
| Address: | 21 Grandview Drive, Normal, IL 61761-4071 |
| Contact: | Carl J. Wenning |
| Phone: | (309) 454-4164 |
| Email: | wenning@phy.ilstu.edu |
| URL: | |
| Members: | 50 |
|
| Name: | Twin City Amateur Astronomers, Inc. |
| Address: | P.O. Box 268, Stanford, IL 61774 USA |
| Contact: | Sandra McNamara |
| Phone: | 309-379-2751 |
| Email: | SandyMc456@aol.com |
| URL: | |
| Members: | 40 members |
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