Yes, an Affidavit needs to be notarized for it to be valid in court. You need to swear in front of a notary public that the information in your written statement is accurate. Lawdepot's Online Notary allows you to connect virtually with a notary public, verify your identity, and authenticate your affidavit.
A sworn statement, also known as a sworn affidavit, is a written document that is signed and certified by the person making the statement in the presence of a person authorized to administer oaths.