It is not proper to say the population density of a town is 145 people per block. It is better to say that the average population density per block in a given town is 145.
What is a Block?
In population studies, a Census Block references the smallest geographic unit that is used for the computation and tabulation of data.
One can also state that in 2010, for example, the number of blocks in the United States was eleven million, five hundred thousand.
Learn more about Census block at:
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