Asia has the least population density among the continents. This primarily arises from its vast land area while having some densely populated regions. Countries like Mongolia and parts of Siberia have extensive territories with very few people, leading to lower density averages. Urbanization tends to cluster in specific areas, contrasting dramatically with the wide-open spaces available in other regions. Thus, while Asia contains some of the world's most populous nations, its overall density is negatively affected by its expansive, less-inhabited regions.