Alaska Albers

The Alaska Albers projection. This equal-area projection is also used by the d3.geo.albersUsa composition projection, downsized and inset.

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

.graticule {
  fill: none;
  stroke: #777;
  stroke-width: .5px;
  stroke-opacity: .5
}

.land {
  fill: #222;
}

.boundary {
  fill: none;
  stroke: #fff;
  stroke-width: .5px;
}

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

var width = 960,
    height = 500;

// EPSG:3338
var projection = d3.geo.conicEqualArea()
    .scale(1400)
    .rotate([154, 0])
    .center([0, 62])
    .parallels([55, 65])
    .clipExtent([[-1, -1], [width + 1, height + 1]]);

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

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

var alaskaState = us.objects.states.geometries.filter(function(d) { return d.id === 2; })[0],
      alaskaCounties = us.objects.counties.geometries.filter(function(d) { return d.id / 1000 | 0 === 2; });

svg.insert("path", ".graticule")
      .datum(topojson.feature(us, alaskaState))
      .attr("class", "land")
      .attr("d", path);

svg.insert("path", ".graticule")
      .datum(topojson.mesh(us, {type: "GeometryCollection", geometries: alaskaCounties}))
      .attr("class", "boundary")
      .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