710 10th Street, Suite 200
Golden, Colorado 80401
Local Calls: 303-279-3080
Toll Free: 800-633-4417
General Inquiry: please email our membership service representatives.
Website Concerns & Suggestions: please email our webmaster.
Office Hours: Monday -Thursday 9 a.m.- 6 p.m.
Friday 9 a.m.- 3 p.m.
Closed on weekends and U.S. Federal holidays; other office closures will be noted on the CMC homepage.