Answer :
Population Area Pop density
Quebec 8.215 million 595,400 mi² 13.8 per mi²
USA 318.9 million 3.806 million mi² 83.79 per mi²
California 38.8 million 163,696 mi² 237 per mi²
NY City 8.406 million 249 mi² 33,759 per mi²
The Winner: New York City