There are over 1000 credit bureaus in the United States. However, most creditors will request your information from one (or all) of the three largest. If you have been denied credit, have a dispute, or just want to know what's in your credit file, you would need to request a credit report from all three major credit bureaus. In addition, you would need to send a letter to all three major credit bureaus to feel certain that you have completely removed any obsolete information that may appear in any credit report a potential creditor may request. Here is the contact information for the three major credit bureaus: