Greene County Bancorp, Inc. operates as a holding company for The Bank of Greene County that provides various financial services in the United States.

The company's deposit products include savings, NOW accounts, money market accounts, certificates of deposit, non-interest bearing checking accounts, and individual retirement accounts.

Its loan portfolio consists of residential, construction and land, and multifamily loans; commercial real estate mortgage loans; consumer loans, such as loans on new and used automobiles, personal loans, and home equity loans, as well as other consumer installment loans, including passbook loans, unsecured home improvement loans, recreational vehicle loans, and deposit account overdrafts; and commercial loans.

The company was founded in 1889 and is based in Catskill, New York. Greene County Bancorp, Inc. is a subsidiary of Greene County Bancorp, MHC.