AlbersUSA + PR

A modified version of d3.geo.albersUsa that includes Puerto Rico.

<!DOCTYPE html>
<meta charset="utf-8">
<style>

rect {
  fill: none;
  pointer-events: all;
}

.sphere {
  fill: none;
  stroke: #ccc;
  shape-rendering: crispEdges;
}

.graticule {
  fill: none;
  stroke: #777;
  stroke-opacity: .2;
}

.mesh {
  fill: none;
  stroke: #000;
}

</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<script src="albers-usa-pr.js"></script>
<script>

var width = 960,
    height = 500;

var projection = albersUsaPr()
    .scale(1070)
    .translate([width / 2, height / 2]);

var path = d3.geo.path()
    .projection(projection);

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);

var graticule = d3.geo.graticule()
    .step([2, 2]);

svg.append("rect")
    .attr("width", width)
    .attr("height", height);

svg.append("path")
    .datum({type: "Sphere"})
    .attr("class", "sphere")
    .attr("d", path);

svg.append("path")
    .datum(graticule)
    .attr("class", "graticule")
    .attr("d", path);

svg.on("mousemove", function() {
  console.log(projection.invert(d3.mouse(this)));
});

d3.json("/../../data/us.json", function(error, us) {
  if (error) throw error;

svg.append("path")
      .datum(topojson.mesh(us))
      .attr("class", "mesh")
      .attr("d", path);
});

</script>

Changed /mbostock/raw/4090846/us.json to a local referenece

https://d3js.org/d3.v3.min.js

https://d3js.org/topojson.v1.min.js