Our system required a zip code for each service address we have. These zip codes defaulted to 22901. The zip code you see in the "Select Service Address" section of the site does not affect the mailing of your bill.
If you check on the "Change Mailing Address" section and it is incorrect there, you can fill out the form and it will get corrected. Email us with any concerns you have with your zip code, we will be happy to help.