300 Reasons to Join Suffolk Credit Union

Earn up to $300 when you open a Momentum Checking account.* Earn $100 per 30 Day-Period for the first 90 days when you make one (1) deposit of at least $500 during each 30-Day Period.

Switching Your Bank is #RealEasy!

Suffolk Credit Union's friendly team at our Sayville, New York, branch is here to make your life easier. Drop in to access cash, ask questions and take care of business. Visit our Sayville Branch to get started, located at  213 N Main St, Sayville, NY 11782.

24 Hour ATM

Walk Up / Stop & Shop Shopping Center

We'll help you open checking and savings accounts, apply for a mortgage or credit card, and show you how to tap into your home equity with a loan or HELOC. 


213 N. Main St.
Sayville, NY 11782
Phone: (631) 924-8000

In-Branch Services

Lobby Hours

Monday - Thursday: 9 a.m. to 5 p.m.
Friday: 9 a.m. to 6 p.m.
Saturday: 9 a.m. to 2 p.m.


Financial Education

Tips to tune-up your financial plan.

*Offer valid for accounts opened May 29  – July 31, 2024. Deposit at least $500 in one transaction each 30-day period (with money not already on deposit at Suffolk Credit Union) for the first 3 months and earn $100 at the end of each 30-day period. Existing memberships without a checking account in the past 90 days are eligible. Promotional month is calculated from the account opening day (Period/Month 1: 1-30 days, Period/Month 2: 31-60 days and Period/Month 3: 61-90 days from account opening date. Cash bonus(es) will be reported as income on IRS form 1099-INT.