Census dotmap using 1.) censusreporter.org for data, and 2.) turf.js for random points within a polygon by wboykinm

index.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset=utf-8 />
    <title>turfjs census dotmap</title>
    <meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
    <script src='https://api.tiles.mapbox.com/mapbox.js/v2.1.9/mapbox.js'></script>
    <link href='https://api.tiles.mapbox.com/mapbox.js/v2.1.9/mapbox.css' rel='stylesheet' />
    <style>
      body { margin:0; padding:0;}
      #map { position:absolute; top:0; bottom:0; width:100%; }
    </style>
  </head>
<body>
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
  <script src='https://api.tiles.mapbox.com/mapbox.js/plugins/turf/v2.0.2/turf.min.js'></script>
  <div id='map'></div>
  <script>
    // specify census geoid - grab one here: //censusreporter.org/
    geoId = '15000US080470138003';
    // get the polygon and population
    $.getJSON('https://api.censusreporter.org/1.0/geo/tiger2013/' + geoId + '?geom=true', function(data) {
      var block = JSON.parse(JSON.stringify(data));
      // define the map and center on the polygon
      L.mapbox.accessToken = 'pk.eyJ1IjoiZmFyYWRheTIiLCJhIjoiTUVHbDl5OCJ9.buFaqIdaIM3iXr1BOYKpsQ';
      var map = L.mapbox.map('map', 'faraday2.5905fe9b')
        .fitBounds(L.geoJson(block).getBounds());

      // style for the polygon
      var polyStyle = {
        color: "#351f72",
        weight: 2,
        fillOpacity: 0,
        opacity: 0.8
      };

      // add the polygon to the map
      var blockFeature = L.geoJson(block, {
        style: polyStyle
      });
      blockFeature.addTo(map);
      // create a bbox object for the polygon
      var blockBox = [blockFeature.getBounds()._southWest.lng,blockFeature.getBounds()._southWest.lat,blockFeature.getBounds()._northEast.lng,blockFeature.getBounds()._northEast.lat];

      // style for the population points
      var markerStyle = {
        radius: 1.4,
        fillColor: "#634ea0",
        color: "#000",
        weight: 0,
        opacity: 0,
        fillOpacity: 0.7
      };

      // add the population of the feature
      var randomCount = block.properties.population;
      // increment up to the population count
      for (var i = 0; i < randomCount; i++) {
        // add a random point within the polygon's bbox
        var point = turf.random('points', 1, {
          bbox: blockBox
        });
        // check to see if the point is within the polygon itself;
        // if not, decrement the count and try again
        if (turf.inside(point.features[0], block) == false ) {
          i = i - 1;
          continue;
        }
        // if the point is inside the polygon, add it to the map
        L.geoJson(point, {
          pointToLayer: function (feature, latlng) {
            return L.circleMarker(latlng, markerStyle);
          }
        }).addTo(map);
      }
    });

  </script>
</body>
</html>