For general questions, you can chat online with a Diamond Member Services Representative during our modified business hours. When you chat, you will be communicating live with Diamond.
Contact Diamond
Here for you 24/7.
If you need to speak directly with a Diamond Representative, we offer several methods to do so, including online and phone options. We look forward to assisting you 24 hours a day, seven days a week.
Diamond Credit Union Routing Number: 231385154
24-Hour Service Call Center
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.
Lending Call Center
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.
Telebranch
Using a touch-tone phone, follow the prompts to get your account balances, transfer funds, and much more.
In Person - Branch Locations
Diamond has several locations to serve our membership, and beginning August 17, in-person appointments for select services will be available at our branches.
By Email
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.
By Postal Mail
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.
Friendly Reminder
It is extremely important that you provide Diamond with your updated contact information, including cell number and email address so that we can reach you regarding suspicious debit card or credit card activity. Contact us to update your email, phone, and/or address.
Lost or Stolen Card?
For assistance with lost or stolen cards, visit the Card Emergencies section of our website.
