Edit in JSFiddle

 
        var geochart = new google.visualization.GeoChart(document.getElementById('map_container'));

        var data = google.visualization.arrayToDataTable([
   ['City', 'ColorIndex'],
   ['619', 0],
['803', 0],
['545', 2],
['630', 3],
['800', 2],
['698', 2],
['522', 3],
        ]);

         var options = {
            displayMode: 'regions',
            region: "US",
            legend: "none",
            width: 600,
            height: 500,
            resolution: 'metros',
            colors: ['red', 'blue', 'orange']
        };

        geochart.draw(data, options);

<div id="map_container"></div>