Yeah, in contrast though it has the 3rd smallest population with a population estimate of around 738,432 in 2015.
You might think so, but Alaska is truly massive. Despite its size though, there's only 738,432 people living there as of 2015, not surprising I guess considering the climate.
Have you ever visited Yellowstone National Park? It's a cool place! I haven't but it was the first national park signed into law through President Ulysses S. Grant during 1872. That's very true. Tedy Roosevelt also had a lot to do with National Parks too  I believe. I didn't know Ted Roosevelt was involved, but I do know that the US has 59 national parks that the National Park Service operates in. Yeah I think it would be really cool to visit them all but that's a lot of ground to cover! I see, did you also know that 6 national parks in Alaska and 1 other are paired with national preserves?  The areas have different protection levels but administered together. Six parks? That's crazy! I bet some states don't even have any! I don't know about the other states, but another thing about Alaska is that it's the largest state by area in the US. Really? I though for sure a state like Texas or Montana would be bigger.
In addition, it is the 3rd least populous and the most sparsely populated of the 50 United States; nevertheless, it is by far the most populous territory located mostly north of the 60th parallel in North America, its population (the total estimated at 738,432 by the U.S. Census Bureau in 2015) more than quadrupling the combined populations of Northern Canada and Greenland.