title: how to add or show zip code boundary Google maps v3
body: <p>After searching zip code through geocoder i want to show boundary around that zip code region as shown in google maps. i have search 02201 as example in maps.google.com and it shows boundary around the whole zip region which indicates all the area under that zip range. here is my code which search zipcode using geocoder and i want to add boundary around that zip region.that i want to implement. please provide any solution. please see this link for image <a href="http://i46.tinypic.com/beyerq.jpg" rel="nofollow">http://i46.tinypic.com/beyerq.jpg</a></p>
  
  <pre><code>function codeAddress() {
      var address = document.getElementById("address").value;
      geocoder.geocode( { 'address': address}, function(results, status) {
        if (status == google.maps.GeocoderStatus.OK) {
          map.setCenter(results[0].geometry.location);
           map.fitBounds(results[0].geometry.viewport);
          var marker = new google.maps.Marker({
              map: map,
              position: results[0].geometry.location
          });
        } else {
          alert("Geocode was not successful for the following reason: " + status);
        }
      });
    }
  </code></pre>