FourLeaf Federal Credit Union

FourLeaf Federal Credit Union is headquartered in Bethpage and is the largest credit union in New York State, with more than 480,000 members. It was founded in 1941 as a credit union for Grumman employees, took the name Bethpage Federal Credit Union in 1948, and rebranded as FourLeaf in 2025.

FourLeaf offers business checking and savings accounts and business loans alongside consumer banking, mortgages, home equity lines, auto loans, credit cards, and investment services. It has branches across Long Island, New York City, and New Jersey, and members also get access to more than 5,000 shared branches and about 30,000 surcharge-free ATMs nationwide through the CO-OP network.

Membership is open to anyone living in the United States who opens a $5 savings account. FourLeaf also supports local initiatives through its FourLeaf Cares program, which covers charitable giving, financial literacy, and volunteering.