Biden-voting counties equal 70% of America's economy
https://www.brookings.edu/blog/the-avenue/2020/11/09/biden-voting-counties-equal-70-of-americas-economy-what-does-this-mean-for-the-nations-political-economic-divide/
Biden captured virtually all of the counties with the biggest economies in the country (depicted by the largest blue tiles in the nearby graphic), including flipping the few that Clinton did not win in 2016.
By contrast, Trump won thousands of counties in small-town and rural communities with correspondingly tiny economies (depicted by the red tiles). Bidens counties tended to be far more diverse, educated, and white-collar professional, with their aggregate nonwhite and college-educated shares of the economy running to 35% and 36%, respectively, compared to 16% and 25% in counties that voted for Trump.
In short, 2020s map continues to reflect a striking split between the large, dense, metropolitan counties that voted Democratic and the mostly exurban, small-town, or rural counties that voted Republican. Blue and red America reflect two very different economies: one oriented to diverse, often college-educated workers in professional and digital services occupations, and the other whiter, less-educated, and more dependent on traditional industries.