A Positive Place
Amherst Boys and Girls Club
Amherst College Center for Community Engagement
Amherst Education Foundation
Amherst Senior Center 
Amherst Survival Center
Roger Anderson
Behavioral Health Network
Big Brothers Big Sisters/CHD
Cancer Connection
Center for EcoTechnology
Center for New Americans
Central Hampshire Veterans Services
Children's Advocacy Center
Clinical and Support Options
Collaborative for Educational Services
State Senator Jo Comerford
Community Action Pioneer Valley
Community Foundation of Western MA
Community Legal Aid
Cooley Dickinson Health Care
DIAL/SELF Youth and Community Services
State Representative Mindy Domb
18 Degrees

Membership Benefits

In addition to providing the sole source of revenue that allows COSA to exist, there are benefits to being a COSA member. As a member of COSA, you will receive our newsletter,  and have the opportunity to post upcoming events and job openings in your organization. Members participate in the Provider’s Fair at no cost,  and receive a discounted rate for the annual breakfast. Join Us! If you would like a membership form, please email