Best Banks & Credit Unions in Plymouth, Massachusetts

Banks and credit unions serving Plymouth, Massachusetts. Compare up to 5.00% APY, fees, minimums and membership rules, dated when we read them.

This page covers banks, credit unions, and local branches available to residents of Plymouth, Massachusetts. All rankings inherit from the Massachusetts state directory. Every institution listed is licensed to serve Plymouth residents and is either headquartered in Massachusetts or operates branches in the metro.

Top options in Plymouth

• Service Credit Union: 5.00% APY. Primary Savings: 5.00% APY on daily balances up to $500; the balance above $500 earns 0.25% APY; $5 to open (membership share); APY accurate as of 11/16/2025 per the page. Read Sep 7, 2026 on servicecu.org.
• Rockland Federal Credit Union: 4.10% APY. 12-month 1 Year Share Certificate: $500 minimum deposit; dividends compounded monthly; personal accounts only. Read Sep 7, 2026 on rfcu.com. Rates as of 2026-09-01 per the page.
• Service Credit Union: 4.00% APY. 12 Months Share Certificate: $500 minimum deposit; fixed rate; APY accurate as of 08/01/2026 per the page. Read Sep 7, 2026 on servicecu.org.
• Northern Bank: 3.90% APY. 12 months CD: $500.00 minimum balance to open and earn APY; maximum $250,000.00 per certificate; the 7-month CD pays 4.00% APY. Read Sep 7, 2026 on nbtc.com. Rates as of 2026-09-01 per the page.
• Santander Bank, N.A.: 3.85% APY. 10-Month CD: No 12-month term is listed; the 10-Month and 14-Month CDs both pay 3.85% APY; $500 minimum to open; available when opened in a Santander location in CT, DE, MA, NH, NJ, NY, PA or RI; 'APY is accurate and effective as of today'. Read Sep 7, 2026 on santanderbank.com.
• Needham Bank: 3.85% APY. 12-month 1 Year Certificate of Deposit: $1,000 minimum opening deposit; interest compounded continuously and credited monthly; 11 and 15 month CDs pay 4.10% APY. Read Sep 7, 2026 on needhambank.com. Rates as of 2026-09-01 per the page.

Other Massachusetts cities

• Banks in Boston
• Banks in Worcester
• Banks in Springfield
• Banks in Cambridge
• Banks in Lowell
• Banks in Brockton
• Banks in New Bedford
• Banks in Quincy

See the full Massachusetts banks directory for every institution we've verified in the state, plus the underlying methodology.