Turbo Tax is asking for the zip code on a W2 form. However I am retired and I do not have a W2 form this year.

[Opus 17 · Accepted solution]

If you started your return by transferring last year, it will import a blank W-2 from your last employer, you need to delete it.  Go to the Wages page and click W-2, it should show you a list of your W-2s with a place to click to "add another W-2" and a delete button or trash can icon next to the previous W-2s.  Delete any that aren't needed this year.