Can the entire population fit in NYC?
Can the entire population fit in NYC? And the answer is, a 27km x 27km (16.8mi x 16.8mi) square. The square is also smaller than New York City. NYC has an area of 786 square km, or 303 sq mi, and the whole human race could fit inside it—with room for another half a billion people.
What if all humans lived in one city?
[General] If the Earth's population lived in one city how would that look? It's a statement fact: if the entire world's population lived in a city with the density of New York it would take up a space roughly as large as the state of Texas.
How fast would you freeze in space?
Your body would take between 18-36 hours to freeze in space due to the radiational cooling. There are other problems when it comes to being stranded in space though. While freezing is not your most immediate concern, oxygen and extreme low pressure are things to be concerned about.