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
Here for you 24/7.
Contact us to speak directly with a Diamond Representative. We look forward to assisting you 24 hours a day, seven days a week.
Diamond Credit Union Routing Number: 231385154
During 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 5:00 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 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. For assistance, call 800-593-1000, option #3.
For general questions, you can chat online with a Diamond Member Services Representative. When you chat, you will be communicating live with Diamond.
Monday – Wednesday: 9:00 a.m. to 5:00 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.
For assistance with lost or stolen cards, visit the Card Emergencies section of our website.
Our dedicated loan professionals are ready to assist with your lending needs during business hours.
Monday – Wednesday: 9:00 a.m. to 5:00 p.m. (Eastern Time)
Thursday & Friday: 9:00 a.m. to 6:00 p.m.
Choose option 4 to connect with the Lending Call Center.
Get more information or apply online 24/7.
Diamond has several locations to serve our membership via drive-thru and in-person appointments for select services.
All postal mail should be sent to:
Diamond Credit Union
1600 Medical Drive
Pottstown, PA 19464
If a specific person, department, or branch is desired, then please include that information as the first line of the address.