Fork of Quantile Choropleth

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Fork of Quantile Choropleth

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Last edited Jun 3, 2025

Created on Jun 3, 2025

This choropleth map displays median home prices by county across New York State for 2023. The visualization immediately reveals the stark regional disparities in housing costs, from high-priced counties like Nassau and Westchester to more affordable northern regions. The map uses a quantile color scale created with `d3.scaleQuantile` and rendered through `d3.geoPath`, with New York-specific county boundaries extracted from TopoJSON data. County polygons are colored from the `d3.schemeBlues` palette. Hovering over a county reveals a tooltip with its exact median price and sales count, drawing from the provided CSV housing dataset.

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