Manila is the most densely populated city in the world with 43 @,@ 079 inhabitants per km2 . District 6 is listed as being the most dense with 68 @,@ 266 inhabitants per km2 , followed by District 1 with 64 @,@ 936 and District 2 with 64 @,@ 710 , respectively . District 5 is the least densely populated area with 19 @,@ 235 .