"Once the 4th largest city in America, Detroit is now down 63%. Since 1950, more people have left Detroit than currently live there. To be specific, at one point Detroit had 1.8 million people — today, the estimate is around 700,000. To wrap your head around that fact, consider that more than 1.1 million people left Detroit. In other words, the entire population of Dallas would have to get up and move away, leaving a ghost town."