Wednesday, April 01, 2020

Covid-19 infections by county, over time

This is a visualization choropleth I put together of Covid-19 infections for each county over time. It's based on the NY Times data set and I built the images in Python based off a very good, if ancient, tutorial I found at FlowingData.

Edit: Updated through Apr. 13 data, and also made the original larger. Not sure if that matters for this web page or not.

This image is licensed under the Creative Commons Attribution-NonCommercial 4.0 International license. I would appreciate attribution if you care to use it!


  1. Is the scale number of positive tests, positive tests per capita, or something else?

  2. Are you going to update this on a daily, weekly, end of pandemic basis? (Hoping for yeses, but I imagine it's more than two minutes of work.)

  3. The scale is positive tests. I don't know where to get county populations offhand.

    It's not much work. Hopefully I'll keep it updated fairly regularly :)

  4. Here's a table of county populations, through the most recent estimates from 2019:


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