For general questions, you can chat online with a Diamond Member Services Representative during regular business hours. When you chat, you will be communicating live with Diamond.
Diamond Credit Union Routing Number: 231385154
Choose from a list of automated options or connect with our courteous receptionist who will put you in contact with the appropriate personnel.
Call Center: 610-326-5490 / 800-593-1000
Monday – Wednesday: 9:00 a.m. to 4:30 p.m. (Eastern Time)
Thursday & Friday: 9:00 a.m. to 7:00 p.m.
Saturday: 9:00 a.m. to 1:00 p.m.
Using a touch-tone phone, follow the prompts to get your account balances, transfer funds, and much more.
Telebranch: 610-326-2339 / 610-326-5490, option #2
Diamond currently has 4 branches to serve our membership. Click here for hours and locations.
Use our convenient email form below to submit your email address and your question/request. A Diamond Representative will respond by the end of the next business day. Please DO NOT include account numbers or sensitive information in this email.