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Tidemark Federal Credit Union is here to serve, with branches conveniently located in Delaware and surcharge-free ATM access at our branches. We'll help you take care of your financial tasks quickly.

Tidemark Corporate Office

(Send Corporate Mail Here)

1941 Bridgeville Highway
PO Box 1800
Seaford, DE 19973


Member Service Center

(Send Member Mail Here -Payments ect.)

216 Washington Street
PO Box 1630
Millsboro, DE 19966


Branches Are Open 9:00 AM - 5:00 PM Monday Through Friday. No Saturday Hours At This Time.

Hours Of Operation

Monday - Thursday9 a.m. - 5 p.m.9 a.m. - 5 p.m.
Friday9 a.m. - 5 p.m.9 a.m. - 5 p.m.

Our Drive-Thru Express Teller Machine is open 24/7 for self-service transaction

Branch Convenient Services

Going Beyond The Norm To Serve You

We're All About Making Your Life A Little Bit Easier With These Convenient Services.

Notary Services: Available at all branch locations and free to our members.

Medallion Signature Guarantee: Available in our Seaford, Delaware, office and free to members who need signature verification on a securities transfer to protect against fraud. Please call ahead at 302-629-0100 to ensure an authorized representative is available.

ATMs: Available at all branch locations* and free to our members.

Express Teller Machines: Our Express Teller Machines provide the same options as a live teller. Conduct self-service transactions 24/7 or connect with a teller by video during normal business hours. Avoid lines when you're conducting transactions. Service is available at your convenience.*

Night Depositories: Available at all branch locations.*

Coin Machines: Stop rolling coins. Let our machines count them for you. Available at all branch locations* and free to our members.

Instant-Issue Debit and Credit Cards: Visit us and get a new card within minutes. Available at all branch locations

*Excluding Salisbury Branch

Holiday Hours

Tidemark Federal Credit Union branches will be closed on the following holidays. Keep in mind, you always have access to your account through Online, Mobile and Phone Banking.

New Year's DaySaturday, January 1st
Birthday of Martin Luther King, Jr.Monday, January 17
Presidents Day and Washington's BirthdayMonday, February 21
Memorial DayMonday, May 30
Juneteenth National Independence Day ObservedMonday, June 20
Independence DayMonday, July 4
Labor DayMonday, September 5
Columbus DayMonday, October 10
Veterans DayFriday, November 11
Thanksgiving DayThursday, November 24
Christmas Day ObservedMonday December 26