You can become a Member of RCU if you live, work or own a business in the counties of Sonoma, Marin, Napa, Mendocino, Lake, San Francisco, Solano, or Contra Costa. You are also eligible to join if you are an immediate family member of a current RCU Member, or if you work for a designated Select Employer Group. Please contact your company's human resources department to learn if RCU is your designated credit union. If we aren't, please have them contact our Business Development Department at (707) 576-5220 to learn how they can benefit from RCU!

To join and enjoy the benefits of RCU, stop by any of our branch locations or apply to become a Member online.

If you have additional questions, you may call our Member Service Center at 1 (800) 479-7928.