Get City and State from Zip Code with Google Geo API

zipToCityState.js

window.findAddressFromZip = function(zipcode) {
  var city, state, zip;
  zip = zipcode.value;
  city = '';
  state = '';
  if (zip.length === 5) {
    $.ajax({
      type: 'POST',
      url: "http://maps.googleapis.com/maps/api/geocode/json?address=" + zip + "?key=XXXXXXXXXXXXXXXXXXXX",
      success: (function(_this) {
        return function(data) {
          if (data["status"] === "OK") {
            $('input#user_account_attributes_address_attributes_city').val(data["results"][0]["address_components"][1]["long_name"]);
            return $('select#user_account_attributes_address_attributes_state').val(data["results"][0]["address_components"][4]["long_name"]);
          }
        };
      })(this)
    });
  }
};

Hello,
I want to full code for the getting city,state,country from picode.
all files i want.
.aspx , and .aspx.cs

Please help me.