San Francisco population: 815,201
https://en.m.wikipedia.org/wiki/Denver_International_Airport
"The 52.4 square miles (136 km2; 33,500 acres) of land occupied by the airport is more than one and a half times the size of Manhattan (33.6 square miles or 87 square kilometres). DIA is larger in land area (excluding water) than the US cities of Boston, Massachusetts and San Francisco, California. DIA occupies the largest amount of commercial airport land area in North America, by a great extent."
they put it there because the old mayor's buddies owned the land. all the getting the 'noise away from people' got cancelled out by the new developments around the place for its workers and such