Service Credit Union is headquartered in New Hampshire and serves 200,000 members. They have physical branches in Massachusetts, North Dakota, and New Hampshire.
Most of their programs focus on military members and government workers. For example, the credit union guarantees income for those who aren't paid on time and pays higher rates to active duty military. But they offer a range of personal banking products (including free checking accounts), loans and insurance products, and anyone can qualify for membership by first joining the American Consumer Council (ACC).
Many of their rates are about what you'd find at a traditional bank, but they have some standout products: particularly their CDs and savings rates (albeit only up to a small balance amount).