Credit unions federally insured by the NCUA will have a sign at every branch near the tellers. If you're visiting the website, the sign will usually be at the bottom of the homepage.  The NCUA keeps a database of federally insured credit unions. If you search the address, credit union name, or charter number on this database, you can double-check to see if it's federally insured. You can also use the NCUA's Share Insurance Estimator if you want to know how share insurance rules apply based on your circumstances.