select distinct on one field only

Hi I'd like to do a DISTINCT query but just on one Field.

E.g.

zip              City               State              Area

10001      NEW YORK      New York      EMPIRE STATE
10001      NEW YORK      New York      G P O
10001      NEW YORK      New York      GREELEY SQUARE
10001      NEW YORK      New York      MACYS FINANCE
10001      NEW YORK      New York      MANHATTAN
10001      NEW YORK      New York      NEW YORK
10001      NEW YORK      New York      NEW YORK CITY
10001      NEW YORK      New York      NY
10001      NEW YORK      New York      NY CITY
10001      NEW YORK      New York      NYC
10002      NEW YORK      New York      KNICKERBOCKER
10002      NEW YORK      New York      MANHATTAN
10002      NEW YORK      New York      NEW YORK
10002      NEW YORK      New York      NYC

When I do a SELECT DISTINCT on here.. I get all rows.

Whereas what I want is to get each zip code out and then the distinct extra columns?