Since 1790 US has more than doubled in size and has more than ten times the population.
Explanation:
During the 1790's census some of the most surprising facts that can be known are that
-There was no Alaska as a part of the US and no other foreign territories were a part either. A large part of the west coast was either under Mexican control or not taken up by any powers and made simply home by the natives.
-These places were all settled later in the next century and by the end of that century the population had expanded many times over
-The coastal population on the west is many times more than the total population of US in 1790.