Regional Chapters
(alpha by state)



Dist. of Columbia



New York




Leadership Team

Matt Sonne '00

Cori Williams '11

Jessica (O'Hare) Witt '00


Welcome to the Orange County Chapter of the Claremont McKenna College Alumni Association. There are more than 900 alumni in the Orange County area. 


The mission of the Orange County Chapter is to offer events throughout the year that enable alumni to meet each other and to stay in touch with Claremont McKenna College. We are always looking for new activities, so let us know if you have a great idea for an event.

Chapter Programming

The College is thrilled to offer new virtual and social programming during these uncertain times. We hope you join us for the many lectures by faculty, social and self-help sessions, CMS events, and Athenaeum speakers. 

Missed a session? Review our virtual library and catch-up on the many offerings.

If you would like to host or have an idea for an event, please email your chapter leadership at the email(s) above or contact the Office of Alumni and Parent Engagement at or (909) 621-8097.