Contact Us

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

call center24-HOUR CALL CENTER
610-326-5490 / 800-593-1000

During Normal Business Hours: Choose from a list of automated options or connect with our Call Center for personal assistance.
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.

After Hours Assistance: Diamond now offers after-hours support. A live person is available to answer questions and assist members, or in certain cases, a Diamond representative will follow-up the next business day.


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 5 locations 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.

Contact Us

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