| Name: | Arkansas Valley Astronomical Society |
| Address: | P. O. Box 4559, Buena Vista, CO 81211 USA |
| Contact: | Jeff Beaty |
| Phone: | 719-395-8083 |
| Email: | avaswebmaster@fourteenernet.com |
| URL: | |
| Members: | |
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| Name: | Black Canyon Astronomical Society |
| Address: | P. O. Box 1809, Montrose, CO 81402-1809 USA |
| Contact: | Bob White |
| Phone: | 970 249 2691 |
| Email: | rwhite@frontier.net |
| URL: | |
| Members: | |
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| Name: | Colorado Astronomy & Space Research Organization |
| Address: | P.O. Box 572 , Clifton, CO 81520 USA |
| Contact: | |
| Phone: | 970-640-1413 |
| Email: | |
| URL: | |
| Members: | |
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| Name: | Colorado Springs Astronomical Society |
| Address: | P.O. Box 62022, Colorado Springs, CO 80962 USA |
| Contact: | Alan Gorski |
| Phone: | 719-651-8476 |
| Email: | csaspr@csastro.org |
| URL: | |
| Members: | 100+ members |
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| Name: | Denver Astronomical Society |
| Address: | c/o Chamberlin Obs., 2930 E. Warren Ave., Denver, CO 80208 USA |
| Contact: | Larry Brooks |
| Phone: | 303-871-5172 |
| Email: | |
| URL: | |
| Members: | |
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| Name: | High Plains Astronomy Club |
| Address: | 13265 Bozeman Trail, Elbert, CO 80106 USA |
| Contact: | Mike Silva |
| Phone: | 719-661-2505 |
| Email: | |
| URL: | |
| Members: | 8 members |
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| Name: | International Association for Astronomical Studies |
| Address: | P.O. Box 55, Golden, CO 80402 USA |
| Contact: | Jim Moravec |
| Phone: | 303-370-6426 |
| Email: | crand@iaas.org |
| URL: | |
| Members: | |
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| Name: | Longmont Astronomical Society |
| Address: | P.O. Box 8029, Longmont, CO 80501 USA |
| Contact: | Bob Spohn |
| Phone: | 303-772-1470 |
| Email: | |
| URL: | |
| Members: | 40 members |
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| Name: | Longmont Astronomical Society |
| Address: | P.O. Box 806, Longmont, CO |
| Contact: | Bob Spohn |
| Phone: | 303-772-1470 |
| Email: | info@longmontastro.org |
| URL: | |
| Members: | 75 |
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| Name: | Northern Colorado Astronomical Society |
| Address: | 3854 Braidwood Drive, Fort Collins, CO 80524 |
| Contact: | David Chamness |
| Phone: | |
| Email: | dec@frii.com |
| URL: | |
| Members: | 60 |
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