geo8.vl

{
    "transform": [
        {
            "as": "geo",
            "from": {
                "data": {
                    "url": "https://vega.github.io/vega-lite/data/us-10m.json",
                    "format": {
                        "feature": "states",
                        "type": "topojson"
                    }
                },
                "key": "id"
            },
            "lookup": "id"
        }
    ],
    "height": 300,
    "config": {
        "view": {
            "stroke": null
        }
    },
    "mark": "geoshape",
    "data": {
        "url": "https://vega.github.io/vega-lite/data/income.json"
    },
    "width": 500,
    "$schema": "https://vega.github.io/schema/vega-lite/v3.json",
    "projection": {
        "type": "albersUsa"
    },
    "encoding": {
        "color": {
            "field": "pct",
            "sort": "descending",
            "type": "quantitative"
        },
        "shape": {
            "field": "geo",
            "type": "geojson"
        },
        "row": {
            "field": "group",
            "type": "nominal"
        }
    },
    "description": "Income in the U.S. by state, faceted over income brackets"
}