CM Template The Center on Colfax Share: Non-Profit Organizations The Center on Colfax Visit Website Request Info 1301 E. Colfax Ave. Denver, CO 80218 (303) 951-5211 (303) 289-9399 (fax) LinkedIn Facebook Hours: M-F 10 a.m. - 8 p.m. About About Founded in 1976, the Center on Colfax is the largest LGBTQ community center in the Rocky Mountain region, giving voice to Colorado's (LGBTQ) community.