How do I pass the variable to the callback function

Question

I have the following code which receives the list of addresses from php script, then sends them for geocoding to google maps and then creates markers and info windows.

My goal is to have the original addresses received from php script displayed on the info windows.

But while the markers are created correctly, the address on all info windows turns out to be the same - the value of the last variable in 'for' loop.

My question is: how can I pass correctly the addresses to the callback function?

$.getJSON('dmvsearch.php?zipcode='+zipcode, null, function (res) {
  for (var x = 0; x < res.length; x++) {
        var address=res[x];
        $.getJSON('http://maps.googleapis.com/maps/api/geocode/json?address='+address+'&sensor=false', null, function (data) {
            var p = data.results[0].geometry.location
            var latlng = new google.maps.LatLng(p.lat, p.lng);
            var marker = new google.maps.Marker({
                position: latlng,
                map: map
            });
            var infowindow = new google.maps.InfoWindow();
            infowindow.setContent('<div><strong>' + address + '</strong><br>');
            marker.addListener('click', function() {
              infowindow.open(map, marker);
            });


        });
    }
});