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Leaflet Markercluster

Using the Leaflet Markercluster plugin

<!DOCTYPE html>
<meta charset=utf-8 />
<title>Leaflet Markercluster</title>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<script src='https://api.mapbox.com/mapbox.js/v3.3.1/mapbox.js'></script>
<link href='https://api.mapbox.com/mapbox.js/v3.3.1/mapbox.css' rel='stylesheet' />
  body { margin:0; padding:0; }
  #map { position:absolute; top:0; bottom:0; width:100%; }
<script src='https://api.mapbox.com/mapbox.js/plugins/leaflet-markercluster/v1.0.0/leaflet.markercluster.js'></script>
<link href='https://api.mapbox.com/mapbox.js/plugins/leaflet-markercluster/v1.0.0/MarkerCluster.css' rel='stylesheet' />
<link href='https://api.mapbox.com/mapbox.js/plugins/leaflet-markercluster/v1.0.0/MarkerCluster.Default.css' rel='stylesheet' />

<!-- Example data. -->
<script src="/mapbox.js/assets/data/realworld.388.js"></script>

<div id='map'></div>

L.mapbox.accessToken = '<your access token here>';
    var map = L.mapbox.map('map')
        .setView([-37.82, 175.215], 14)

    var markers = new L.MarkerClusterGroup();

    for (var i = 0; i < addressPoints.length; i++) {
        var a = addressPoints[i];
        var title = a[2];
        var marker = L.marker(new L.LatLng(a[0], a[1]), {
            icon: L.mapbox.marker.icon({'marker-symbol': 'post', 'marker-color': '0044FF'}),
            title: title

to create your own custom map and use it in this example.
Use this example by copying its source into your own HTML page and replacing the Map ID with one of your own from your projects. Having trouble with JavaScript? Try out Codecademy or contact our support team.
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