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I live in a small town, population around 9,000. There are several dozen trucks rolling coal here.

How many small towns are there in the USA, each one of these trucks belching soot equvalent to over a hundred vehicles?

Even if there are only twenty five thousand small towns, that's a quarter million additional soot stacks on the road.

Apparently, there are 310 cities and nearly 19,500 total number of incorporated cities, towns, villages and boroughs across the U.S. Twenty five thousand small towns is a reasonable estimate.

https://www.reference.com/geography/many-cities-united-state...

That's a bit misleading as it's going by the actual city population and not the metro area. For instance, SF proper is only about 850k, but the metro is 5M... 9M if you count Oakland, etc.

OKay, how many trucks are rolling coal in SF and Oalkand?

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