This is an interesting graphic: a cartogram (a map in which area changes with some underlying variable) of states showing census population through time. Yes, you must click through to see it.
I have a suspicion that this isn’t quite perfect: New York doesn’t seem large enough for most of the time, and many other states seem too large through most of it.
I wonder if it is actually showing something like number of members of Congress (which has a minimum of 3), although the early showing for some states like Florida suggests not. For example, New York’s population around World War II was something like 50 times as large as some other states, and that’s simply not what’s shown in this cartogram.