You could house every man, woman and child on earth -- all seven billion of them -- in 5-person homes on 1/12th acre building lots ...all in the state of Texas. And that's excluding 25% of Texas' land area as unsuitable because it's mountainous or underwater, and leaving 10% of what remains for roads and highways.
You'd have to put all your malls, schools, hospitals, strip clubs, honky tonks and burrito stands in Oklahoma, but they'd have plenty of room, because everybody'd be living in Texas.
