I put in my zip and got:"We're sorry; we could not locate a store near you."I tried putting in several zips near me (NW WA) and got the same message.
I think this is just available to people in the areas with stores from (see list at bottom):http://www.supervalu.com/sv-webapp/index.jsp
I think their form is set to a small shopping radius. We have an Albertsons close by so I used their zip code. Thanks!