East River Federal Credit Union is a member-owned cooperative headquartered in Madison, South Dakota. Membership is open to people who live, work, worship, or attend school in Lake County or Miner County, South Dakota, plus their immediate family. Services include savings and checking accounts, auto, recreational, personal, and home loans, Visa credit cards, and online banking.

East River Federal Credit Union has served Lake County and Miner County, South Dakota since 1956, giving Madison-area families a not-for-profit alternative to big banks. Members enjoy competitive rates on auto, recreational, and home loans, high-interest checking, certificates, and free tools like mobile banking, bill pay, and financial counseling � all with the friendly, local service a hometown credit union is known for. Members can also use Fluz alongside their East River FCU accounts to earn extra cashback and rewards on everyday purchases, gift cards, and bill payments, making it easier to stretch every paycheck while banking close to home in Madison, SD.