Why is southern Jiangsu more densely populated than northern Jiangsu?

The higher population density in southern Jiangsu compared to the north is primarily attributed to its long history of development and its strategic geographic location at the Yangtze River delta.1

This region has served as an economic and cultural center since ancient times, fostering early urbanization and sustained growth. The area's historical importance was further bolstered by its role in trade and commerce, particularly through the Grand Canal, which facilitated the movement of grain and other goods, contributing to the region's wealth and development.1234

In contrast, settlement patterns in northern Jiangsu have historically been more dispersed, with dwellings often found singly or in small groups along riverbanks and coastlines. The southern region's development is also closely linked to the economic and geographic integration with the Shanghai municipality, which remains a critical factor in the distribution of the population today.1