The huge difference between a credit union and a big bank is who actually runs the show. Credit unions follow this simple rule: "one member, one vote." That means everyone who has an account - even if you just have five bucks in savings - gets an equal say in what the CU does. Pretty democratic, right?
This whole setup really affects who’s in charge. The board of directors is made up of volunteer members who are voted in by the other members. They usually live right in the community, so they represent what their neighbors (the account holders) actually want, not some far-off stockholders just looking for the biggest possible profit.
Since the leadership is local, they focus a lot on the community. Credit Union often fund local initiatives, they often teach people how to manage their money, and try to make loans that help the local economy and community stay strong. This commitment means they act like a community partner instead of just some large banks that only care about your fees and their profit margins.