NOW YOU KNOW

Of all countries with 25 million or more inhabitants, Bangladesh is the most densely populated one -- by a lot.  Its population density is roughly 2,500 people per square mile; the next most dense country with a population exceeding 25 million is South Korea, at just over 1,250 people per square mile.  Another perspective: Both Bangladesh and Iowa have an area of roughly 56,000 square miles.  Bangladesh has a population of 145 million.  Iowa has a population of 3 million.