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Map of USA

✓ Published1🌍 Public
NNita
Last edited Mar 26, 2025
Created on Mar 26, 2025

This interactive choropleth map displays the percentage of adults age 25 and older with a bachelor's degree or higher across US counties, using data from the USDA Economic Research Service and TopoJSON map data from the US Census Bureau. County polygons are colored on a yellow-green sequential scale via `d3.scaleSequential` and `interpolateYlGn`, with `d3.geoPath` handling the SVG rendering. Hovering over a county reveals a tooltip showing the county name, state, and exact percentage. The visualization also includes a gradient legend built with D3 scales and React components for the header and tooltip.

AI-generated description

USA Education Choropleth Map

This project visualizes United States educational attainment data with a choropleth map. The map shows the percentage of adults age 25 and older with a bachelor's degree or higher in each US county (2010-2014).

Features

  • Interactive choropleth map of the US showing education data by county
  • Color legend indicating education percentages
  • Tooltip on hover showing detailed information for each county
  • Responsive design that works on different screen sizes

Technologies Used

  • React.js for UI components
  • D3.js for data visualization
  • TopoJSON for map data processing

Data Sources

  • Education data: U.S. Department of Agriculture Economic Research Service
  • Map data: U.S. Census Bureau
MIT Licensed

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