It looks like you're rejecting every concept of averages, or probabilities, or statistics, or generalization because you feel slighted by the resulting comparison.
When considering the US as a whole then Loudoun county will get the appropriate weight in the resulting number. If you zoom out to see the map of the world and no longer see your street, it doesn't mean the map is wrong. It's perfect for the purpose of visualizing the world.
I'll bet you're fine with "the US people are richer than the Burundi" or "Dutch people are taller than US people". These also don't tell you anything about the short Dutch people or ultra-poor in the US. But you accept them because you don't feel slighted by them.
Or else you reject the premise because you zoomed in on a place which is not right on that average so the whole concept gets thrown out the window.
When considering the US as a whole then Loudoun county will get the appropriate weight in the resulting number. If you zoom out to see the map of the world and no longer see your street, it doesn't mean the map is wrong. It's perfect for the purpose of visualizing the world.
I'll bet you're fine with "the US people are richer than the Burundi" or "Dutch people are taller than US people". These also don't tell you anything about the short Dutch people or ultra-poor in the US. But you accept them because you don't feel slighted by them.
Or else you reject the premise because you zoomed in on a place which is not right on that average so the whole concept gets thrown out the window.