[kd0amg]

The USPS also has the additional challenge of matching what you think is your address with what is actually your address. Very, very few people know their address.

What parts of their addresses do people typically get wrong? Where can one go to find one's actual address?

[jloughry]

Here's where you can go to find your actual address:

    https://tools.usps.com/go/ZipLookupAction_input

There are, occasionally, errors in the database. I'm trying to get one corrected now. If you find one, go to your local Post Office, find a supervisor, and ask him or her to notify "Address Management".

[sambe]

There is not always one answer. In the UK the Royal Mail, electoral roll, credit reference agencies etc can disagree with each other.