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 etc.)

216 Washington Street
PO Box 1630
Millsboro, DE 19966


Branches Are Open
9:00 AM - 5:00 PM Monday Through Friday

Hours Of Operation

Our Drive-Thru (and Lobby) Express Teller Machines are open 24/7 for self-service transactions.

Monday - Friday


9 a.m. - 5 p.m.


    9 a.m. - 5 p.m.


      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: Free to our members. Available at all branches*

      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

      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 Day Monday, January 1st
      Birthday of Martin Luther King, Jr. Monday, January 15th
      Washington's Birthday Monday, February 19th
      Memorial Day Monday, May 27th
      Juneteenth National Independence Day Observed Wednesday, June 19th
      Independence Day Thursday, July 4th
      Labor Day Monday, September 2nd
      Columbus Day Monday, October 14th
      Veterans Day Friday, November 11th
      Thanksgiving Day Thursday, November 28th
      Christmas Day Observed Wednesday, December 25th

      Savings Goals Within Reach:
      Discover Our Best Local Rates

      AUTO loan

      Frequently Asked Questions

      Plus, You Get Access to Our Member Premium Benefits


      You Become a Member-Owner

      We don't exist to enhance the wealth of our shareholders, we are member-owned. As a not-for-profit organization, we use our profits to increase Member benefits and support community causes.


      Your Money is Insured & Protected

      Instead of being covered under FDIC, your deposits are covered under the National Credit Union Administration (NCUA), which insures deposits up to $250,000, the same amount as the FDIC. It’s a different name but the same function.


      Your Funds Are Easy to Access

      With online and mobile banking, you have access to your account anytime and anywhere from your computer, smartphone, or tablet. Check your account balance, transfer funds, pay bills, and manage your finances easily without going to the bank.