https://www.go-astronomy.com/astro-club-search.htm
Additions to above:
Astronomical Society of East Texas (ASET)
website: http://www.asetexas.com/
email: info@asetexas.com
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Astronomical Society of Eastern Missouri (ASEM)
http://www.asemonline.org/
jtwellman@asemonline.org
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Skylands Astronomy Club, Sussex NJ
http://skylandsastronomy.com/
https://www.facebook.com/SkylandsAstronomyClubNJ/
skylandsastronomy@yahoo.com
And of course, be sure to tell your local club about