List of city districts by population density

This is a list of the most densely populated city subdivisions with over 30,000 PD/km2 in the world with an area of at least 1 km2. Most are districts of large cities and may vary significantly in regional importance. Note this list is not exhaustive as data is hard to come by for many places on earth.

Barangays
At least a dozen barangays have population densities over 200,000 people per square km, which are very small sections or neighborhoods (not city districts) within Manila, with the highest that of Barangay 717 at 277,007.3 people per square km.