Look at this data: http://www.zipatlas.com/us/zip-code-comparison/population-density.htm http://www.zipatlas.com/us/zip-code-comparison/population-de... LA ha

Look at this data: http://www.zipatlas.com/us/zip-code-comparison/population-density.htm http://www.zipatlas.com/us/zip-code-comparison/population-de... LA has some of the densest zip codes in the country. If we look at the top zip code by metro, the ranking is NY, Boston, SF, Seattle (???), LA, Chicago, Washington.