The theme for Day 3 of the #30daymapchallenge is Polygons! In this video I show you how to make a map of postal codes and use Graduated Symbology to represent their attributes.

• https://30daymapchallenge.com/
• https://data-algeohub.opendata.arcgis.com/search?groupIds=f9d89eb1c7c64ed39ab92c2e541369c4&type=feature%20layer

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