Found a interesting website regarding the question of what is population density via the United States Census Bureau.
Population density all boiled down it looks like it is the population of people that would fit in a square mile.
Here is the resource:
Understanding Population Density
A fun fact found on the ThoughtCo. website is that the entire Worlds density including all land area is about 38 people per square mile.
Population Density Information and Statistics
Here are some other cool resources regarding population density:
Population Density via the World Bank
There’s a Better Way to Measure Population Density via City Lab
What resources do you have for population density? Do you have a article or specific interesting statistic to share?