The most densely populated square kilometre in the United States is on the Upper East Side in New York City. This is not a surprise, so in this long and slightly messy post I'll say a bit more about my attempts to calculate exactly where it is and how many people live there, using US Census 2020 data and a similar method to my previous post on the most densely populated square km of the United Kingdom. I also attempt to find the most densely populated square kilometre in each state. If you're...
