Best Banks & Credit Unions in New Castle, Delaware
Banks and credit unions serving New Castle, Delaware. Compare up to 0.10% APY, fees, minimums and membership rules, dated when we read them.
This page covers banks, credit unions, and local branches available to residents of New Castle, Delaware. All rankings inherit from the Delaware state directory. Every institution listed is licensed to serve New Castle residents and is either headquartered in Delaware or operates branches in the metro.
Top options in New Castle
- Shore United Bank: 4.00% APY. 12-month 12-23 Month CD: $500 minimum required to obtain APY; listed under CD Specials but described as a fixed rate; any withdrawal during the term is subject to a penalty of 90 days of interest; rates effective as of 09/01/2026. Read Sep 7, 2026 on shoreunitedbank.com. Rates as of 2026-09-01 per the page.
- Del-One Federal Credit Union: 3.80% APY. 12-month Share Certificate: $500 minimum balance; early withdrawal penalties may apply; rates effective as of 8/3/2026. Read Sep 7, 2026 on del-one.org. Rates as of 2026-08-03 per the page.
- Sun East Federal Credit Union: 3.70% APY. 12 Month Regular Certificate: $500 initial deposit; penalty for early withdrawal. Read Sep 7, 2026 on suneast.org.
- County Bank: 3.55% APY. 12 Month Certificate of Deposit: $500.00 minimum opening balance; a penalty may be imposed for early withdrawal. Read Sep 7, 2026 on countybankdel.com. Rates as of 2026-09-07 per the page.
- DEXSTA Federal Credit Union: 3.45% APY. 12-month Regular Certificate: Minimum balance $1,000; penalties apply for early withdrawal; rates effective July 13, 2026. Read Sep 7, 2026 on dexsta.com. Rates as of 2026-07-13 per the page.
- Tidemark Federal Credit Union: 3.30% APY. 12-month Regular Share Certificate: $500 minimum; penalties apply for early withdrawal; rates effective starting 06/16/2026. Read Sep 7, 2026 on tidemarkfcu.org. Rates as of 2026-06-16 per the page.
Banks with more than one branch in New Castle
Each opens every one of that bank's offices in New Castle, with the address of each and what it holds.
Other Delaware cities
See the full Delaware banks directory for every institution we've verified in the state, plus the underlying methodology.